EDISON INTERNATIONAL Form 10-Q Quarterly Report Filed 2021-07-29

SECURITIES AND EXCHANGE COMMISSION

FORM 10-Q Quarterly report pursuant to sections 13 or 15(d)

Filing Date: 2021-07-29 | Period of Report: 2021-06-30 SEC Accession No. 0000827052-21-000051

(HTML Version on secdatabase.com)

FILER EDISON INTERNATIONAL Mailing Address Business Address 2244 WALNUT GROVE AVE, 2244 WALNUT GROVE AVE, CIK:827052| IRS No.: 954137452 | State of Incorp.:CA | Fiscal Year End: 1231 P O BOX 800 P O BOX 800 Type: 10-Q | Act: 34 | File No.: 001-09936 | Film No.: 211127488 ROSEMEAD CA 91770 ROSEMEAD CA 91770 SIC: 4911 Electric services (626) 302-2222 SOUTHERN CALIFORNIA EDISON Co Mailing Address Business Address 2244 WALNUT GROVE AVE 2244 WALNUT GROVE AVE CIK:92103| IRS No.: 951240335 | State of Incorp.:CA | Fiscal Year End: 1231 ROSEMEAD CA 91770 P O BOX 800 Type: 10-Q | Act: 34 | File No.: 001-02313 | Film No.: 211127489 ROSEMEAD CA 91770 SIC: 4911 Electric services 6263021212

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

(Mark One) QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES ☑ EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2021 TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES ☐ EXCHANGE ACT OF 1934 For the transition period from to

Commission Exact Name of Registrant State or Other Jurisdiction of IRS Employer File Number as specified in its charter Incorporation or Organization Identification Number 1-9936 EDISON INTERNATIONAL California 95-4137452 1-2313 SOUTHERN CALIFORNIA EDISON COMPANY California 95-1240335

SOUTHERN CALIFORNIA EDISON EDISON INTERNATIONAL COMPANY

2244 Walnut Grove Avenue 2244 Walnut Grove Avenue (P.O. Box 976) (P.O. Box 800) Rosemead, California 91770 Rosemead, California 91770 (Address of principal executive offices) (Address of principal executive offices) (626) 302-2222 (626) 302-1212 (Registrant's telephone number, including area code) (Registrant's telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act: Edison International:

Title of each class Trading Symbol(s) Name of each exchange on which registered Common Stock, no par value EIX NYSE LLC

Southern California Edison Company: None.

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.

Edison International Yes ☑ No ☐ Southern California Edison Company Yes ☑ No ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company, or an emerging growth company. See the definitions of "large accelerated filer," accelerated filer," "smaller reporting company," and "emerging growth company" in Rule 12b-12 of the Exchange Act.

Large Accelerated Smaller Reporting Emerging growth Edison International Filer Accelerated Filer Non-accelerated Filer Company company ☑ ☐ ☐ ☐ ☐ Southern California Large Accelerated Smaller Reporting Emerging growth Edison Company Filer Accelerated Filer Non-accelerated Filer Company company ☐ ☐ ☑ ☐ ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.

Edison International ☐ Southern California Edison Company ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).

Edison International Yes ☐ No ☑ Southern California Edison CompanyYes☐ No ☑

Indicate the number of shares outstanding of each of the issuer's classes of common stock, as of the latest practicable date:

Common Stock outstanding as of July 22, 2021: Edison International 379,704,799 Shares Southern California Edison Company 434,888,104 Shares

TABLE OF CONTENTS

SEC Form 10-Q Reference Number GLOSSARY iv FORWARD-LOOKING STATEMENTS 1 MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS 4 Part I, Item 2 MANAGEMENT OVERVIEW 4 Highlights of Operating Results 4 2021 General Rate Case 5 Capital Program 7 Southern California Wildfires and Mudslides 8 CSRP 11 COVID-19 11 Wildfire Mitigation, Wildfire Insurance and Restoration Expenses 11 RESULTS OF OPERATIONS 12 Southern California Edison Company 12 Three months ended June 30, 2021 versus June 30, 2020 13 Earning Activities 13 Cost-Recovery Activities 14 Six months ended June 30, 2021 versus June 30, 2020 15 Earnings Activities 15 Cost-Recovery Activities 16 Supplemental Operating Revenue Information 16 Income Taxes 17 Edison International Parent and Other 17 Loss from Operations 17 LIQUIDITY AND CAPITAL RESOURCES 18 Southern California Edison Company 18 Available Liquidity 20 Regulatory Proceedings 20 Capital Investment Plan 22 Margin and Collateral Deposits 22 Edison International Parent and Other 23 Historical Cash Flows 24 Southern California Edison Company 24

Contingencies 28 MARKET RISK EXPOSURES 28 Commodity Price Risk 28 Credit Risk 29 CRITICAL ACCOUNTING ESTIMATES AND POLICIES 29 NEW ACCOUNTING GUIDANCE 29 QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK 29 Part I, Item 3 FINANCIAL STATEMENTS 30 Part I, Item 1 Edison International Consolidated Statements of Income 30 Edison International Consolidated Statements of Comprehensive Income 31 Edison International Consolidated Balance Sheets 32 Edison International Consolidated Statements of Cash Flows 34 SCE Consolidated Statements of Income 35 SCE Consolidated Statements of Comprehensive Income 35 SCE Consolidated Balance Sheets 36 SCE Consolidated Statements of Cash Flows 38 NOTES TO CONSOLIDATED FINANCIAL STATEMENTS 39 Note 1. Summary of Significant Accounting Policies 39 Note 2. Consolidated Statements of Changes in Equity 43 Note 3. Variable Interest Entities 46 Note 4. Fair Value Measurements 48 Note 5. Debt and Credit Agreements 51 Note 6. Derivative Instruments 53 Note 7. Revenue 55 Note 8. Income Taxes 57 Note 9. Compensation and Benefit Plans 58 Note 10. Investments 59 Note 11. Regulatory Assets and Liabilities 60 Note 12. Commitments and Contingencies 62 Note 13. Equity 76 Note 14. Accumulated Other Comprehensive Loss 77 Note 15. Other Income 78 Note 16. Supplemental Cash Flows Information 78 Note 17. Related-Party Transactions 79 CONTROLS AND PROCEDURES 80 Part I, Item 4

Changes in Internal Control Over Financial Reporting 80 Jointly Owned Utility Plant 80 LEGAL PROCEEDINGS 80 Part II, Item 1 2017/2018/Wildfire/Mudslide Events 80 Environmental Proceedings 80 RISK FACTORS 80 Part II, Item 1A EXHIBITS 82 Part II, Item 6 SIGNATURES 84

This is a combined Form 10-Q separately filed by Edison International and Southern California Edison Company. Information contained herein relating to an individual company is filed by such company on its own behalf.

iii

GLOSSARY The following terms and abbreviations appearing in the text of this report have the meanings indicated below. 2017/2018 the Thomas Fire, the Koenigstein Fire, the Montecito Mudslides and the Woolsey Wildfire/Mudslide Fire, collectively Events 2019/2020 wildfires that originated in Southern California in 2019 and 2020 where SCE's Wildfires equipment may be alleged to be associated with the fire's ignition 2020 Form 10-K Edison International's and SCE's combined Annual Report on Form 10-K for the year ended December 31, 2020 AB 1054 California Assembly Bill 1054, executed by the governor of California on July 12, 2019 AB 1054 Excluded approximately $1.6 billion in wildfire risk mitigation capital expenditures that Capital SCE will exclude from the equity portion of SCE's rate base as required under AB Expenditures 1054 AB 1054 Liability a cap on the aggregate requirement to reimburse the Wildfire Insurance Fund over Cap a trailing three calendar year period which applies if certain conditions are met and is equal to 20% of the equity portion of the utility's transmission and distribution rate base, excluding general plant and intangibles, in the year of the applicable prudency determination ARO(s) asset retirement obligation(s) BRRBA Base Revenue Requirement Balancing Account CAISO California Independent System Operator Capital Structure January 1, 2020 to December 31, 2022, the current compliance period for SCE's Compliance Period CPUC authorized capital structure CAPP California Arrearage Payment Program CCAs community choice aggregators which are cities, counties, and certain other public agencies with the authority to generate and/or purchase electricity for their local residents and businesses CEMA Catastrophic Event Memorandum Accounts COVID-19 Coronavirus disease 2019 CPUC California Public Utilities Commission CSRP Customer Service Re-platform, a SCE project to implement a new customer service system DERs distributed energy resources Edison Energy Edison Energy, LLC, a wholly-owned subsidiary of Edison Energy Group that is engaged in the competitive business of providing data-driven energy solutions to commercial, institutional and industrial customers Edison Energy Edison Energy Group, Inc., an indirect wholly-owned subsidiary of Edison Group International, that is a holding company for subsidiaries engaged in competitive businesses Edison Proxy Statement filed with the SEC in connection with Edison International's International Proxy Annual Meeting of Shareholders' held on April 22, 2021 Statement Electric Service an entity that offers electric power and ancillary services to retail customers, other Provider than electrical corporations (like SCE) and CCAs ERRA Energy Resource Recovery Account FERC Federal Energy Regulatory Commission FHPMA Fire Hazard Prevention Memorandum Account

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Fitch Fitch Ratings, Inc. GAAP generally accepted accounting principles GHG greenhouse gas GRC general rate case GS&RP Grid Safety and Resiliency Program Koenigstein Fire a wind-driven fire that originated near Koenigstein Road in the City of Santa Paula in Ventura County, California, on December 4, 2017

kV unit of electrical potential equal to 1000 volts MD&A Management's Discussion and Analysis of Financial Condition and Results of Operations Montecito the debris flows and flooding in Montecito, Santa Barbara County, California, that Mudslides occurred in January 2018 Moody's Moody's Investors Service, Inc. NERC North American Electric Reliability Corporation NRC Nuclear Regulatory Commission OEIS Office of Energy Infrastructure Safety of the California Natural Resources Agency (previously, the OEIS was the Wildfire Safety Division (or WSD) of the CPUC) PABA Portfolio Allocation Balancing Account Palo Verde nuclear electric generating facility located near Phoenix, Arizona in which SCE holds a 15.8% ownership interest PBOP(s) postretirement benefits other than pension(s) PG&E Pacific Gas & Electric Company PSPS Public Safety Power Shutoffs ROE return on common equity RPS renewables portfolio standard S&P Standard & Poor's Financial Services LLC San Onofre retired nuclear generating facility located in south San Clemente, California in which SCE holds a 78.21% ownership interest SCE Southern California Edison Company, a wholly-owned subsidiary of Edison International SDG&E San Diego Gas & Electric SEC U.S. Securities and Exchange Commission SED Safety and Enforcement Division of the CPUC Tax Reform Tax Cuts and Jobs Act signed into law on December 22, 2017 Thomas Fire a wind-driven fire that originated in the Anlauf Canyon area of Ventura County, California, on December 4, 2017 TKM collectively, the Thomas Fire, the Koenigstein Fire and the Montecito Mudslides TKM Subrogation the plaintiffs party to the TKM Subrogation Settlement, representing all the Plaintiffs insurance subrogation plaintiffs in the TKM litigation at the time of the settlement TKM Subrogation a settlement entered into by Edison International and SCE in September 2020 in Settlement the TKM litigation to which the TKM Subrogation Plaintiffs are party VCFD Ventura County Fire Department WEMA Wildfire Expense Memorandum Account WMP a wildfire mitigation plan required to be filed under AB 1054 to describe a utility's plans to construct, operate, and maintain electrical lines and equipment that will help minimize the risk of catastrophic wildfires caused by such electrical lines and equipment Wildfire Insurance the insurance fund established under AB 1054 Fund Woolsey Fire a wind-driven fire that originated in Ventura County in November 2018 Woolsey the plaintiffs party to the Woolsey Subrogation Settlement, representing all the Subrogation insurance subrogation plaintiffs in the Woolsey Fire litigation at the time of the Plaintiffs settlement Woolsey a settlement entered into by Edison International and SCE in January 2021 in the Subrogation Woolsey litigation to which the Woolsey Subrogation Plaintiffs are party Settlement

FORWARD-LOOKING STATEMENTS

This quarterly report on Form 10-Q contains "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements reflect Edison International's and SCE's current expectations and projections about future events based on Edison International's and SCE's knowledge of present facts and circumstances and assumptions about future events and include any statements that do not directly relate to a historical or current fact. Other information distributed by Edison International and SCE that is incorporated in this report, or that refers to or incorporates this report, may also contain forward-looking statements. In this report and elsewhere, the words "expects," "believes," "anticipates," "estimates," "projects," "intends," "plans," "probable," "may," "will," "could," "would," "should," and variations of such words and similar expressions, or discussions of strategy or plans, are intended to identify forward-looking statements. Such statements necessarily involve risks and uncertainties that could cause actual results to differ materially from those anticipated. Some of the risks, uncertainties and other important factors that could cause results to differ from those currently expected, or that otherwise could impact Edison International and SCE, include, but are not limited to the:

● ability of SCE to recover its costs through regulated rates, including uninsured wildfire-related and debris flow-related costs, costs incurred to mitigate the risk of utility equipment causing future wildfires, costs incurred to implement SCE's new customer service system and costs incurred as a result of the COVID-19 pandemic;

● ability of SCE to implement its WMP;

● risks of regulatory or legislative restrictions that would limit SCE's ability to implement PSPS when conditions warrant or would otherwise limit SCE's operational PSPS practices;

● risks associated with implementing PSPS, including regulatory fines and penalties, claims for damages and reputational harm;

● ability of SCE to maintain a valid safety certification;

● ability to obtain sufficient insurance at a reasonable cost, including insurance relating to SCE's nuclear facilities and wildfire-related claims, and to recover the costs of such insurance or, in the event liabilities exceed insured amounts, the ability to recover uninsured losses from customers or other parties;

● extreme weather-related incidents (including events caused, or exacerbated, by climate change, such as wildfires, debris flows, droughts, high wind events and extreme heat events) and other natural disasters (such as earthquakes), which could cause, among other things, public safety issues, property damage, operational issues (such as rotating outages and issues due to damaged infrastructure), PSPS activations and unanticipated costs;

● risks associated with AB 1054 effectively mitigating the significant risk faced by California investor-owned utilities related to liability for damages arising from catastrophic wildfires where utility facilities are alleged to be a substantial cause, including the longevity of the Wildfire Insurance Fund and the CPUC's interpretation of and actions under AB 1054, including its interpretation of the new prudency standard established under AB 1054;

● ability of SCE to effectively manage its workforce, including its contract workers;

● decisions and other actions by the CPUC, the FERC, the NRC and other governmental authorities, including decisions and actions related to nationwide or statewide crisis, determinations of authorized rates of return or return on equity, the recoverability of wildfire-related and debris flow-related costs, issuance of

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document SCE's wildfire safety certification, wildfire mitigation efforts, and delays in executive, regulatory and legislative actions;

● ability of Edison International or SCE to borrow funds and access bank and capital markets on reasonable terms;

● risks associated with the decommissioning of San Onofre, including those related to worker and public safety, public opposition, permitting, governmental approvals, on-site storage of spent nuclear fuel, delays, contractual disputes, and cost overruns;

● pandemics, such as COVID-19, and other events that cause regional, statewide, national or global disruption, which could impact, among other things, Edison International's and SCE's business, operations, cash flows, liquidity and/or financial results and cause Edison International and SCE to incur unanticipated costs;

● physical security of Edison International's and SCE's critical assets and personnel and the cybersecurity of Edison International's and SCE's critical information technology systems for grid control, and business, employee and customer data;

● risks associated with cost allocation resulting in higher rates for utility bundled service customers because of possible customer bypass or departure for other electricity providers such as CCAs and Electric Service Providers;

● risks inherent in SCE's transmission and distribution infrastructure investment program, including those related to project site identification, public opposition, environmental mitigation, construction, permitting, power curtailment costs (payments due under power contracts in the event there is insufficient transmission to enable acceptance of power delivery), changes in the CAISO's transmission plans, and governmental approvals;

● risks associated with the operation of transmission and distribution assets and power generating facilities, including worker and public safety issues, the risk of utility assets causing or contributing to wildfires, failure, availability, efficiency, and output of equipment and facilities, and availability and cost of spare parts;

● actions by credit rating agencies to downgrade Edison International or SCE's credit ratings or to place those ratings on negative watch or negative outlook;

● changes in tax laws and regulations, at both the state and federal levels, or changes in the application of those laws, that could affect recorded deferred tax assets and liabilities and effective tax rate;

● changes in future taxable income, or changes in tax law, that would limit Edison International's and SCE's realization of expected net operating loss and tax credit carryover benefits prior to expiration;

● changes in the fair value of investments and other assets;

● changes in interest rates and rates of inflation, including escalation rates (which may be adjusted by public utility regulators);

● governmental, statutory, regulatory, or administrative changes or initiatives affecting the electricity industry, including the market structure rules applicable to each market adopted by the NERC, CAISO, Western Electricity Council, and similar regulatory bodies in adjoining regions, and changes in the United States' and California's environmental priorities that lessen the importance the state places on GHG reduction;

● availability and creditworthiness of counterparties and the resulting effects on liquidity in the power and fuel markets and/or the ability of counterparties to pay amounts owed in excess of collateral provided in support of their obligations;

● cost and availability of labor, equipment and materials;

● potential for penalties or disallowance for non-compliance with applicable laws and regulations; and

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document ● cost of fuel for generating facilities and related transportation, which could be impacted by, among other things, disruption of natural gas storage facilities, to the extent not recovered through regulated rate cost escalation provisions or balancing accounts.

Additional information about risks and uncertainties, including more detail about the factors described in this report, is contained throughout this report and in the 2020 Form 10-K, including the "Risk Factors" section. Readers are urged to read this entire report, including information incorporated by reference, as well as the 2020 Form 10-K, and carefully consider the risks, uncertainties, and other factors that affect Edison International's and SCE's businesses. Forward-looking statements speak only as of the date they are made and neither Edison International nor SCE are obligated to publicly update or revise forward-looking statements. Readers should review future reports filed by Edison International and SCE with the SEC. Edison International and SCE post or provide direct links to (i) certain SCE and other parties' regulatory filings and documents with the CPUC and the FERC and certain agency rulings and notices in open proceedings in a section titled "SCE Regulatory Highlights," (ii) certain documents and information related to Southern California wildfires which may be of interest to investors in a section titled "Southern California Wildfires," and (iii) presentations, documents and information that may be of interest to investors in a section titled "Presentations" at www.edisoninvestor.com in order to publicly disseminate such information. The reports, presentations, documents and information contained on, or connected to, the Edison investor website are not deemed part of, and are not incorporated by reference into, this report.

The MD&A for the six months ended June 30, 2021 discusses material changes in the consolidated financial condition, results of operations and other developments of Edison International and SCE since December 31, 2020 and as compared to the six months ended June 30, 2020. This discussion presumes that the reader has read or has access to Edison International's and SCE's MD&A for the calendar year 2020 (the "2020 MD&A"), which was included in the 2020 Form 10-K.

Except when otherwise stated, references to each of Edison International, SCE, or Edison Energy Group mean each such company with its subsidiaries on a consolidated basis. References to "Edison International Parent and Other" mean Edison International Parent and its consolidated competitive subsidiaries and "Edison International Parent" mean Edison International on a stand-alone basis, not consolidated with its subsidiaries. Unless otherwise described, all the information contained in this report relates to both filers.

MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

MANAGEMENT OVERVIEW

Highlights of Operating Results

Edison International is the parent holding company of SCE and Edison Energy Group. SCE is an investor- owned public utility primarily engaged in the business of supplying and delivering electricity to an approximately 50,000 square mile area of southern California. Edison Energy Group is a holding company for Edison Energy which is engaged in the competitive business of providing data-driven energy solutions to commercial, institutional and industrial customers. Edison Energy's business activities are currently not material to report as a separate business segment.

Three months ended Six months ended June 30, June 30, (in millions) 2021 2020 Change 2021 2020 Change Net income (loss) attributable to Edison International SCE $ 359 $ 381 $ (22) $ 655 $ 600 $ 55 Edison International Parent and Other (41) (63) 22 (78) (99) 21 Edison International 318 318 — 577 501 76 Less: Non-core items SCE 2017/2018 Wildfire/Mudslide Events expenses (6) (9) 3 (10) (9) (1)

Wildfire Insurance Fund expense (39) (60) 21 (77) (120) 43 Sale of San Onofre nuclear fuel 7 37 (30) 7 37 (30) Re-measurement of tax liabilities — — — — 18 (18) Edison International Parent and Other Goodwill impairment — (25) 25 — (25) 25 Re-measurement of tax liabilities — — — — (3) 3

Total non-core items (38) (57) 19 (80) (102) 22 Core earnings (losses) SCE 397 413 (16) 735 674 61 Edison International Parent and Other (41) (38) (3) (78) (71) (7) Edison International $ 356 $ 375 $ (19) $ 657 $ 603 $ 54

Edison International's earnings are prepared in accordance with GAAP. Management uses core earnings (losses) internally for financial planning and for analysis of performance. Core earnings (losses) are also used when communicating with investors and analysts regarding Edison International's earnings results to facilitate comparisons of the company's performance from period to period. Core earnings (losses) are a non-GAAP financial measure and may not be comparable to those of other companies. Core earnings (losses) are defined as earnings attributable to Edison International shareholders less non-core items. Non-core items include income or loss from discontinued operations and income or loss from significant discrete items that management does not consider representative of ongoing earnings, such as write downs, asset impairments and other income and expense related to changes in law, outcomes in tax, regulatory or legal proceedings, and exit activities, including sale of certain assets and other activities that are no longer continuing.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Edison International's second quarter 2021 earnings remained unchanged from the second quarter of 2020, resulting from a decrease in SCE's earnings of $22 million and a decrease in Edison International Parent and Other's losses of $22 million. SCE's lower earnings consisted of $16 million of lower core earnings and $6 million of higher non-core losses. Edison International's earnings for the six months ended June 30, 2021 increased $76 million from the six months ended June 30, 2020, resulting from an increase in SCE's earnings of $55 million and a decrease in Edison International Parent and Other's

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Table of Contents losses of $21 million. SCE's higher earnings consisted of $61 million of higher core earnings and $6 million of higher non-core losses.

The decrease in SCE's core earnings for the second quarter 2021 from the same period in 2020 was primarily due to higher depreciation, partially offset by higher FERC revenue and lower expenses related to wildfire mitigation activities.

The increase in SCE's core earnings for the six months ended June 30, 2021 from the same period in 2020 was primarily due to lower expenses related to wildfire mitigation activities, employee benefits and lower customer uncollectibles as well as higher FERC revenue, partially offset by higher depreciation.

The decrease in Edison International Parent and Other's net loss for the three months and six months ended June 30, 2021 was due to higher core losses of $3 million and $7 million, respectively, and lower non-core losses of $25 million and $28 million, respectively. Edison International's increase in core losses was primarily due to higher preferred dividends as a result of the preferred equity issuance in 2021, partially offset by the recognition of unrealized gains from the increase in fair value of an investment in Proterra Inc, an electric vehicle technology manufacturer, and lower corporate expenses.

Consolidated non-core items for the six months ended June 30, 2021 and 2020 primarily included:

● Charges of $107 million ($77 million after-tax) recorded in 2021 and $167 million ($120 million after-tax) recorded in 2020 from the amortization of SCE's contributions to the Wildfire Insurance Fund. See "Notes to Consolidated Financial Statements—Note 12. Commitments and Contingencies" for further information.

● Charges of $14 million ($10 million after-tax) recorded in 2021 and $12 million ($9 million after-tax) recorded in 2020 for 2017/2018 Wildfire/Mudslide Events expenses.

● Gains of $10 million ($7 million after-tax) recorded in 2021 and $52 million ($37 million after-tax) recorded in 2020 for SCE's sale of San Onofre nuclear fuel.

● An impairment charge of $34 million ($25 million after-tax) recorded in 2020 for Edison International Parent and Other related to Edison Energy's goodwill.

● An income tax benefit of $18 million and income tax expense of $3 million recorded in 2020 for SCE and Edison International Parent and Other, respectively, due to re-measurement of uncertain tax positions related to the 2010 – 2012 California state tax filings currently under audit.

See "Results of Operations" for discussion of SCE and Edison International Parent and Other results of operations.

2021 General Rate Case

The 2021 GRC consists of four separate tracks. Track 1 is similar to previous GRCs and addresses revenue requirements for the three-year period of 2021 – 2023. Tracks 2 and 3 address the reasonableness of 2018 – 2019 and 2020 wildfire mitigation costs that were incremental to amounts authorized in the 2018 GRC, respectively. In January 2020, a CPUC decision introduced a third attrition year in current and future GRCs. As a result, track 4 will address the revenue requirement for 2024. SCE is scheduled to submit its testimony for track 4 in May 2022.

In July 2021, the CPUC issued a proposed decision on track 1 of the 2021 GRC, which if adopted, would result in a base rate revenue requirement of $6.9 billion in 2021, an increase of $342 million over revenue requirements authorized for 2020. This is a decrease of $744 million from SCE's requested revenue requirement primarily related to lower authorized expenses for wildfire insurance, vegetation management, employee

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document benefits and depreciation. The proposed decision, if adopted, would provide a balancing account for cost recovery of up to 115% of authorized vegetation management expenses. The proposed decision would also provide regulatory mechanisms to seek recovery of vegetation management expenses above 115% of authorized levels and incremental wildfire insurance expenses through reasonableness review applications. SCE expects

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Table of Contents vegetation management costs to exceed authorized levels due to increased labor rates required by state legislation in October 2019. If adopted, the proposed decision would lead to a non-core impairment of utility property, plant and equipment of up to $78 million ($56 million after-tax) related to disallowed historical capital expenditures of pole replacements the CPUC determined were performed prematurely.

The proposed decision would allow escalation of wildfire capital additions based on forecast spending for both 2022 and 2023. It would also allow operation and maintenance expenses to be escalated for 2022 and 2023 through the use of various escalation factors for labor, non-labor and medical expenses. The methodology set forth in the proposed decision would, if adopted by the CPUC, result in a revenue requirement of $7.2 billion in 2022 and $7.6 billion in 2023.

The CPUC has approved the establishment of a memorandum account making the authorized revenue requirement changes effective January 1, 2021. Under the proposed decision the increase in January 2021 to September 2021 authorized revenues would be collected over a 27-month period beginning October 1, 2021.

SCE cannot predict the revenue requirement the CPUC will ultimately authorize. SCE is recognizing revenue based on the 2020 authorized revenue requirement until a final GRC decision is issued. SCE expects a final decision on the track 1 GRC application for the 2021 test year in the third quarter of 2021. A final decision could result in material changes to the proposed decision.

This table sets out the authorized revenue and costs of service under the 2018 GRC and the 2021 GRC proposed decision:

2021 2020 Proposed 2020 Adjusted Decision Authorized Authorized Authorized Increase (in millions) Revenue Adjustments1 Revenue Revenue (Decrease) Authorized revenue $ 5,898 $ 645 $ 6,543 $ 6,885 $ 342 Cost of service: Operation and maintenance 1,676 595 2,271 2,216 (55) Depreciation 1,759 17 1,776 1,906 130 Property and payroll taxes 360 2 362 397 35 Income taxes 138 — 138 215 77 Authorized return 1,965 31 1,996 2,151 155 Total $ 5,898 $ 645 $ 6,543 $ 6,885 $ 342

1 Adjustments to 2020 GRC authorized revenue to include authorized Grid Safety and Resiliency Program Memorandum Account ("GSRPMA") and authorized WEMA revenue requirements for costs from 2018 to 2020 which were recorded in 2020. The adjustment includes revenue requirements of $37 million and $344 million which relate to 2018 and 2019 for GSRPMA and WEMA, respectively. Revenue requirements of $497 million for operation and maintenance expense and depreciation incurred in 2020 are subject to reasonableness review in track 3 of the 2021 GRC and are not reflected above.

The proposed decision, if adopted, would authorize total capital expenditures of $4.6 billion for 2021, $577 million lower than SCE's request. The most significant reduction to SCE's request is related to SCE's Wildfire Covered Conductor Program ("WCCP"), SCE's largest wildfire risk mitigation program. SCE had requested $3.4 billion of capital expenditures to install 6,272 miles from 2019 to 2023. If approved, the proposed decision would authorize $1.5 billion of capital expenditures for SCE to install 2,750 miles of covered conductor from 2019 to 2023 and a balancing account to track the difference between actual WCCP costs and amounts authorized. If spending is less than authorized, SCE would refund those amounts to customers. If spending exceeds authorized, SCE would recover spending up to 110% of the authorized amount from customers. SCE would be eligible to submit a subsequent reasonableness review application if spending is in excess of 110% of authorized amounts.

This table sets out SCE's authorized capital expenditures, net of amounts collectible for customer requested modifications, under the 2021 GRC proposed decision, as well as SCE's forecast of CPUC jurisdictional non- GRC capital expenditures and FERC jurisdictional capital expenditures:

Total (in billions) 2021 2022 2023 2021 – 2023 Total company capital expenditure as described above $ 4.71 $ 4.7 $ 4.6 $ 14.0

1 SCE is currently continuing to execute a capital spending plan for 2021 in line with previous projections, for additional information see "—Capital Program."

Reflected below is SCE's estimated weighted average annual rate base for 2021 – 2023 incorporating the 2021 GRC proposed decision, expected rate base from CSRP if approved, other CPUC non-GRC projects or programs that have been approved and forecast FERC capital expenditures. The table below does not reflect the $1.6 billion of AB 1054 Excluded Capital Expenditures, or approximately $350 million of rate base associated with 2020 wildfire restoration capital expenditures which SCE anticipates will be included in future CEMA applications. The table below reflects the July 2021 reduction in rate base from a $400 million payment from a third party for the 30-year use of a portion of the West of Devers transmission project.

In July 2021, the CPUC issued a proposed decision which, if adopted, would deny without prejudice SCE's application to recover all restoration costs related to six 2017 wildfires. The proposed decision, if adopted, could lead to a $165 million reduction in forecast rate base in 2021. For additional information see "Liquidity and Capital Resources—SCE—Regulatory Proceedings—Wildfire Related Regulatory Proceedings—2019 CEMA Application" and "Notes to Consolidated Financial Statements—Note 12. Commitments and Contingences."

(in billions) 2021 2022 2023 Total company rate base as described above $ 35.7 $ 38.0 $ 40.0

For more information on tracks 2 and 3 of the 2021 GRC, see "Liquidity and Capital Resources—SCE—Regulatory Proceedings—Wildfire Related Regulatory Proceedings—2021 General Rate Case Wildfire Mitigation Memorandum Account Balances."

Capital Program

Total capital expenditures (including accruals) were $2.3 billion for the first six months of both 2021 and 2020.

In the absence of a 2021 GRC final decision, SCE continues to execute a capital spending plan for 2021 that would result in spending in the range of $5.4 billion to $5.5 billion.

SCE will adjust spending for what is ultimately authorized in the 2021 GRC final decision while minimizing the risk of disallowed spending. If the 2021 GRC proposed decision is adopted, recovery of any wildfire mitigation spending above authorized amounts would be subject to subsequent reasonableness review.

In addition to a final GRC decision, actual capital spending may be affected by changes in regulatory, environmental and engineering design requirements, permitting and project delays, cost and availability of labor, equipment and materials and other factors. For further information regarding the capital program see "Liquidity and Capital Resources—SCE—Capital Investment Plan" in this filing and "Management Overview—Capital Program" in the 2020 MD&A.

Southern California Wildfires and Mudslides

California has experienced unprecedented weather conditions in recent years and SCE's service territory remains susceptible to additional wildfire activity in 2021 and beyond. The worsening conditions across California increase the likelihood of wildfires, including those where SCE's equipment may be alleged to be associated with the fire's ignition. In response to worsening weather and fuel conditions and increased wildfire activity over the past several years, SCE has developed and is implementing its 2020 – 2022 WMP to reduce the risk of SCE equipment contributing to the ignition of wildfires. In addition, California has increased its investment in wildfire prevention and fire suppression capabilities.

In addition to the investments SCE is making as part of its WMP, SCE also uses its PSPS program to proactively de-energize power lines to mitigate the risk of catastrophic wildfires during extreme weather events. SCE may be subject to mandated changes to, or restrictions on, its operational PSPS practices, regulatory fines and penalties, claims for damages and reputational harm if SCE does not execute PSPS in compliance with applicable rules and regulations or if it is determined that SCE has placed excessive or unreasonable reliance on PSPS. In June 2021, the CPUC issued a final decision which, among other things, will reduce future authorized revenue for the volumetric reductions in electricity sales resulting from PSPS events initiated after June 2021 until the CPUC determines that improvements in the PSPS program have been made.

SCE's equipment has been, and may further be, alleged to be associated with several wildfires that have originated in Southern California subsequent to 2018. Edison International and SCE expect that any losses incurred in connection with those fires will be covered by insurance, subject to self-insured retentions and co- insurance, and expect that any such losses after insurance recoveries will not be material.

2017/2018 Wildfire/Mudslide Events

As discussed in the 2020 Form 10-K, multiple lawsuits related to the 2017/2018 Wildfire/Mudslide Events have been initiated against SCE and Edison International.

Through June 30, 2021, Edison International and SCE have recorded total pre-tax charges of $6.2 billion, expected recoveries from insurance of $2.0 billion and expected recoveries through FERC electric rates of $233 million related to the 2017/2018 Wildfire/Mudslide Events. The after-tax net charges to earnings recorded through June 30, 2021 have been $2.9 billion.

As of June 30, 2021, SCE had paid $4.7 billion under executed settlements and had $141 million to be paid under executed settlements related to the 2017/2018 Wildfire/Mudslide Events. As of the same date, SCE had recovered $2.0 billion through insurance and $139 million through FERC-jurisdictional electric rates.

After giving effect to all settlements entered into through June 30, 2021, Edison International and SCE's best estimate of expected losses for remaining alleged and potential claims related to the 2017/2018 Wildfire/ Mudslide Events was $1.4 billion. The remaining estimated losses for the 2017/2018 Wildfire/Mudslide Events do not include an estimate of any potential fines or penalties that could be levied against SCE in connection with the 2017/2018 Wildfire/Mudslide Events. Edison International and SCE are currently unable to reasonably estimate the magnitude of any such fines or penalties, or the associated timing if they were to be imposed. Estimated losses for the 2017/2018 Wildfire/Mudslide Events litigation are based on a number of assumptions and are subject to change as additional information becomes available. Actual losses incurred may be higher or lower than estimated based on several factors, including: the uncertainty as to the legal and factual determinations to be made during litigation, including uncertainty as to the contributing causes of the 2017/2018

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Wildfire/Mudslide Events, the complexities associated with fires that merge, whether inverse condemnation will be held applicable to SCE with respect to damages caused by the Montecito Mudslides, uncertainties related to the litigation

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Table of Contents processes, the uncertainty in estimating damages that may be alleged, and the uncertainty as to how these factors impact future settlements.

SCE will seek CPUC-jurisdictional rate recovery of prudently-incurred, actual losses realized in connection with the 2017/2018 Wildfire/Mudslide Events in excess of available insurance. SCE believes that, in light of the CPUC's decision in a cost recovery proceeding involving SDG&E arising from several 2007 wildfires in SDG&E's service area, there is substantial uncertainty regarding how the CPUC will interpret and apply its prudency standard to an investor-owned utility in future wildfire cost-recovery proceedings for fires ignited prior to July 12, 2019. Accordingly, while the CPUC has not made a determination regarding SCE's prudency relative to any of the 2017/2018 Wildfire/Mudslide Events, SCE is unable to conclude, at this time, that uninsured CPUC-jurisdictional wildfire-related costs are probable of recovery through electric rates.

Current Wildfire Insurance Coverage

SCE has approximately $1.0 billion of wildfire-specific insurance coverage for events that may occur during the period July 1, 2021 through June 30, 2022, subject to $50 million of self-insured retention and up to approximately $75 million of co-insurance, which results in net coverage of approximately $875 million. Various coverage limitations within the policies that make up SCE's wildfire insurance coverage could result in additional material self-insured costs, for instance in the event of multiple wildfire occurrences during a policy period or with a single wildfire with damages in excess of the policy limits. SCE believes that its insurance coverage for the July 1, 2021 through June 30, 2022 period meets its obligation to maintain reasonable insurance coverage under AB 1054.

2019 Wildfire Legislation

In July 2019, AB 1054 was signed by the governor of California and became effective immediately. The summary of the wildfire legislation in this report is based on SCE's interpretation of the legislation and is qualified in its entirety by, and should be read together with, AB 1054 and companion Assembly Bill 111.

AB 1054 Prudency Standard

Under AB 1054, the CPUC must apply a new standard when assessing the prudency of a utility in connection with a request for recovery of wildfire costs for wildfires ignited after July 12, 2019. Utilities with a valid safety certification will be presumed to have acted prudently related to a wildfire ignition unless a party in the cost recovery proceeding creates serious doubt as to the reasonableness of the utility's conduct, at which time, the burden shifts back to the utility to prove its conduct was prudent. If a utility does not have a valid safety certification, it will have the burden to prove, based on a preponderance of evidence, that its conduct was prudent.

Wildfire Insurance Fund

AB 1054 also provided for the Wildfire Insurance Fund to reimburse a utility for payment of certain third-party damage claims arising from certain wildfires that exceed, in aggregate in a calendar year, the greater of $1.0 billion or the insurance coverage required to be maintained under AB 1054. Through June 30, 2021, the participating investor-owned utilities, PG&E, SCE and SDG&E, have collectively contributed approximately $8.1 billion to the Wildfire Insurance Fund and have not sought reimbursement of wildfire claims from the fund.

Participating investor-owned utilities will be reimbursed from the Wildfire Insurance Fund for eligible claims, subject to the fund administrator's review. Utilities participating in the Wildfire Insurance Fund are not required to reimburse the fund for amounts withdrawn from the fund that the CPUC finds were prudently incurred and can recover such prudently incurred wildfire costs through electric rates if the fund has been exhausted. SCE will reimburse the fund for any withdrawn amounts if SCE receives payment of such amounts under an indemnification agreement or from an insurance provider or other third-party. SCE will also be required to reimburse the fund for withdrawn amounts that the CPUC disallows subject to the AB

1054 Liability Cap. A utility will not be eligible for the AB 1054 Liability Cap if it does not maintain a valid safety certification or its actions or inactions that resulted in the wildfire are found to constitute conscious or willful disregard of the rights and safety of others. Based on SCE's forecasted weighted-average 2021 transmission and distribution rate base, excluding general plant and intangibles, and using the equity portion of SCE's CPUC authorized capital structure of 52%, SCE's requirement to reimburse the Wildfire Insurance Fund for eligible claims disallowed in 2021 would be capped at approximately $3.2 billion. SCE will not be allowed to recover borrowing costs incurred to reimburse the fund for amounts that the CPUC disallows. The Wildfire Insurance Fund and, consequently, the AB 1054 Liability Cap, will terminate when the administrator determines that the fund has been exhausted.

Safety Certification and Wildfire Mitigation Plan

Under AB 1054, SCE can obtain an annual safety certification upon the submission of certain required safety information, including an approved WMP. On September 17, 2020, SCE obtained a safety certification that will be valid for 12 months. Notwithstanding its 12-month term, if SCE requests a new safety certification by September 13, 2021, then its current safety certification will remain valid until the OEIS acts on SCE's request for a new safety certification. SCE expects to request a new safety certification by September 13, 2021 and expects the OEIS to act on its request by December 13, 2021.

SCE submitted its 2020 – 2022 WMP in February 2020. In June 2020, the CPUC ratified the OEIS's conditional approval of SCE's 2020 – 2022 WMP. The approval was conditioned on SCE providing requested information to the OEIS, including additional descriptions of how SCE is implementing, and will implement, certain requirements imposed by the OEIS. SCE submitted updates to its 2020 – 2022 WMP in February 2021 to, among other things, report on implementation of its plan in 2020 and describe new and ongoing wildfire mitigation activities. In June 2021, SCE submitted revised updates to its 2020 – 2022 WMP in response to a revision notice received from the OEIS. In July 2021, the OEIS issued a draft resolution approving SCE's updates, and a draft action statement requiring SCE to remedy certain specified issues, including by reevaluating the scope and pace of its covered conductor program and providing additional clarity and consistency on risk mitigation analysis. If the draft action statement is approved, SCE will be required to submit a report regarding its progress on remedying these issues on November 1, 2021 and in its 2022 WMP update. Final approval of the draft resolution and the draft action statement is expected in August 2021.

Capital Expenditure Requirement

Under AB 1054, approximately $1.6 billion of spending by SCE on wildfire risk mitigation capital expenditures made after August 1, 2019, cannot be included in the equity portion of SCE's rate base. SCE can apply for irrevocable orders from the CPUC to finance these AB 1054 Excluded Capital Expenditures, including through the issuance of securitized bonds, and can recover any prudently incurred financing costs. In November 2020, the CPUC issued an irrevocable order permitting SCE to finance approximately $340 million, comprised of AB 1054 Excluded Capital Expenditures incurred in connection with GS&RP and prudently incurred financing costs, through the issuance of securitized bonds. As of June 30, 2021, SCE has spent all of the approximately $1.6 billion in AB 1054 Excluded Capital Expenditures.

SCE issued securitized bonds in the amount of $338 million in February 2021. In June 2021, SCE filed an application with the CPUC requesting to finance up to $1.0 billion of wildfire mitigation and customer uncollectible costs and associated financing costs through the issuance of securitized bonds. The $1.0 billion request included approximately $518 million of AB 1054 Excluded Capital Expenditures. SCE expects to seek additional irrevocable orders from the CPUC to finance the remaining AB 1054 Excluded Capital Expenditures. See "Liquidity and Capital Resources—SCE—Regulatory Proceedings—Financing Order" for further details.

For further information, see "Notes to Consolidated Financial Statements—Note 1. Summary of Significant Accounting Policies—Initial and annual contributions to the wildfire insurance fund established pursuant to

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document California Assembly Bill 1054" in the 2020 Form 10-K and "Notes to Consolidated Financial Statements—Note 12. Commitments and Contingencies—Contingencies—Southern California Wildfires and Mudslides" in this report.

CSRP

In April 2021, SCE implemented a new customer service system, which replaced a majority of SCE's customer systems. The project is referred to as the Customer Service Re-Platform (CSRP). SCE has tracked the cost of the CSRP system implementation in a previously approved memorandum account. Forecasted expenditures for the CSRP project are approximately $540 million in capital and $90 million in operations and maintenance expenses from inception through 2021.

In July 2021, SCE filed an application with the CPUC requesting approval of $483 million of capital expenditures and $40 million of operations and maintenance expenses recorded in the CSRP memorandum account through April 2021 resulting in revenue requirements of $411 million from 2021 to 2024. SCE expects to seek recovery of costs incurred from May 2021 through December 2021 in a future application anticipated to be filed in 2022.

COVID-19

As discussed in the 2020 Form 10-K, the COVID-19 pandemic is having a significant impact on global society and economies. As a result of the pandemic, Edison International and SCE have experienced increased costs, but the pandemic has not had a pervasive impact on SCE's or Edison International's ability to operate their business.

As a result of the pandemic and increased estimates of uncollectible expenses, largely related to the economic impacts of the pandemic on SCE's customers, SCE has recognized $250 million of incremental costs as of June 30, 2021, of which $78 million has been deferred to memorandum accounts for future CPUC reasonableness review and $172 million has been transferred to balancing accounts pending recovery. In addition to the increases in expected uncollectible accounts, SCE has incurred incremental costs associated with sequestering certain SCE employees at essential work locations and coordination of SCE's response to the emergency.

In April 2021, the CPUC issued a decision to adopt a COVID-19 disconnection moratorium for medium-large commercial and industrial electric customers and established a memorandum account to track, and seek recovery of, the resulting costs.

SCE has requested an irrevocable financing order to securitize up to $78 million of incremental uncollectible expenses. SCE plans to recover a further $34 million of incremental residential uncollectible expenses associated with the economic effects of the COVID-19 pandemic and eligible for securitization through the ERRA balancing account.

California's state assembly is considering legislation to authorize, fund and implement the CAPP, which could reduce SCE's 2020 and 2021 customer arrearages for certain residential customers. To the extent SCE's total uncollectible expenses are offset by the CAPP, no recovery will be sought through other mechanisms. See "Liquidity and Capital Resources—SCE—Regulatory Proceedings—Financing Order" for further details.

For further information see "Notes to the Consolidated Financial Statements—Note 11. Regulatory Assets and Liabilities" in this filing and "Management Overview—COVID-19" and "Risk Factors" in the 2020 MD&A.

Wildfire Mitigation, Wildfire Insurance and Restoration Expenses

As discussed in the 2020 Form 10-K, in response to the increase in wildfire activity, and faster progression of and increased damage from wildfires across SCE's service territory and throughout California, SCE is currently incurring wildfire mitigation, wildfire insurance and wildfire and drought restoration related spending at levels significantly exceeding amounts authorized in its 2018 GRC.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document As of June 30, 2021, SCE has recognized approximately $1.1 billion of regulatory assets related to incremental wildfire mitigation expenses, including depreciation expense from $2.0 billion of total incremental wildfire mitigation capital expenditures. The regulatory assets include $401 million of operations and maintenance expense authorized for recovery in the GRC track 2 proceeding in January 2021. SCE expects to securitize this amount, subject to approval of a financing order by the CPUC. See "Liquidity and Capital Resources—SCE—Regulatory Proceedings—Financing Order" for further details.

In the event these costs are not authorized for securitization, SCE will include the costs in customer rates as soon as practicable. In February 2021, the AB 1054 Excluded Capital Expenditures incurred in connection with GS&RP and prudently incurred financing costs previously deferred to memorandum accounts were recovered through a previous securitization.

Additionally, SCE has recognized $396 million of regulatory assets associated with drought and wildfire restoration and $342 million of regulatory assets related to incremental wildfire insurance expenses. While SCE believes such costs are probable of future recovery, there is no assurance that SCE will collect all amounts currently deferred as regulatory assets.

In July 2021, the CPUC issued a proposed decision which, if approved, would authorize full recovery of requested drought restoration costs and approve a revenue requirement of $81 million. However, the proposed decision, if adopted, would reject recovery of the $8 million revenue requirement associated with all $60 million of requested wildfire restoration costs related to 2017 wildfires, but would allow SCE to submit a subsequent cost recovery application for those costs. For additional information, see "Liquidity and Capital Resources—SCE—Regulatory Proceedings— Wildfire Related Regulatory Proceedings—2019 CEMA Application."

For additional information, see "Liquidity and Capital Resources—SCE" and "Liquidity and Capital Resources—SCE—Regulatory Proceedings—Wildfire Related Regulatory Proceedings."

RESULTS OF OPERATIONS

SCE

SCE's results of operations are derived mainly through two sources:

● Earning activities – representing revenue authorized by the CPUC and the FERC, which is intended to provide SCE a reasonable opportunity to recover its costs and earn a return on its net investment in generation, transmission and distribution assets. The annual revenue requirements are comprised of authorized operation and maintenance costs, depreciation, taxes and a return consistent with the capital structure. Also, included in earnings activities are revenue or penalties related to incentive mechanisms, other operating revenue, and regulatory charges or disallowances.

● Cost-recovery activities – representing CPUC- and FERC- authorized balancing accounts, which allow for recovery of specific project or program costs, subject to reasonableness review or compliance with upfront standards, as well as non-bypassable rates collected for SCE Recovery Funding LLC. Cost-recovery activities include rates which provide recovery, subject to reasonableness review of, among other things, fuel costs, purchased power costs, public purpose related-program costs (including energy efficiency and demand-side management programs), certain operation and maintenance expenses, and repayment of bonds and financing costs of SCE Recovery Funding LLC. SCE earns no return on these activities.

The following table is a summary of SCE's results of operations for the periods indicated.

Three months ended June 30, 2021 versus June 30, 2020

Three months ended June 30, 2021 Three months ended June 30, 2020 Cost- Cost- Earning Recovery Total Earning Recovery Total (in millions) Activities Activities Consolidated Activities Activities Consolidated Operating revenue $ 1,830 $ 1,476 $ 3,306 $ 1,775 $ 1,205 $ 2,980 Purchased power and fuel — 1,283 1,283 — 1,068 1,068 Operation and maintenance 512 223 735 575 166 741 Wildfire Insurance Fund expense 54 — 54 83 — 83 Depreciation and amortization 532 1 533 489 — 489 Property and other taxes 117 — 117 103 — 103 Other operating income, net of impairment (11) — (11) (52) — (52) Total operating expenses 1,204 1,507 2,711 1,198 1,234 2,432 Operating income (loss) 626 (31) 595 577 (29) 548 Interest expense (196) (2) (198) (193) — (193) Other income 31 33 64 53 29 82 Income before taxes 461 — 461 437 — 437 Income tax expense 76 — 76 26 — 26 Net income 385 — 385 411 — 411 Less: Preferred and preference stock dividend requirements 26 — 26 30 — 30 Net income available for common stock $ 359 $ — $ 359 $ 381 $ — $ 381 Net income available for common stock $ 359 $ 381 Less: Non-core expense (38) (32) Core earnings1 $ 397 $ 413

1 See use of non-GAAP financial measures in "Management Overview—Highlights of Operating Results."

Earning Activities

Earning activities were primarily affected by the following:

● Higher operating revenue of $55 million primarily due to the following:

● An increase in CPUC-related revenue of $30 million primarily due to lower incremental tax benefits (offset in income taxes as discussed below).

● An increase in FERC-related revenue and other operating revenue of $25 million primarily due to FERC rate base growth and a $10 million increase in 2021 due to a change in estimate under the FERC formula rate mechanism.

● Lower operation and maintenance costs of $63 million primarily due to the following:

● Lower expenses of $7 million related to wildfire-mitigation costs including inspections and preventive maintenance.

● Lower expenses of $23 million subject to balancing account treatment.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document ● Decreased other expenses of $33 million primarily due to lower legal expenses, environmental remediation and customer uncollectible costs. Customer uncollectible costs were lower as a result of CPUC authorized cost recovery of residential uncollectible costs.

● Lower Wildfire Insurance Fund expense of $29 million due to the change in the estimated life of the Wildfire Insurance Fund which increased the amortization period of SCE contributions in 2021. See "Notes to Consolidated Financial Statements—Note 12. Commitments and Contingences" for further information.

● Higher depreciation and amortization expense of $43 million primarily due to increased plant balances in 2021.

● Higher property and other taxes of $14 million primarily due to higher property assessed values in 2021.

● Lower other operating income, net of impairment of $41 million primarily consisting of gains of $10 million and $52 million related to the sale of San Onofre nuclear fuel in 2021 and 2020, respectively. As a result of the January 2018 Revised San Onofre Order Instituting Investigation ("OII") Settlement Agreement among OII Parties, the proceeds from the sale of nuclear fuel will not be returned to customers.

● Lower other income of $22 million primarily due to lower insurance benefits and AFUDC equity income.

● Higher income tax expense of $50 million primarily due to lower income tax benefits related to the flow-through of property-related items refunded to customers through balancing accounts (as discussed above) and higher pre-tax income.

● Lower preferred and preference stock dividends of $4 million due to the redemption of preferred securities in 2020.

Cost-Recovery Activities

Operating revenue and the corresponding operating expenses in cost-recovery activities were primarily affected by the following:

● Higher purchased power and fuel costs of $215 million primarily due to higher power and gas prices and higher capacity costs.

● Higher operation and maintenance costs of $57 million due to the authorization to recover uncollectible costs through the RUBA and higher spending on customer service programs.

Six months ended June 30, 2021 versus June 30, 2020

Six months ended June 30, 2021 Six months ended June 30, 2020 Cost- Cost- Earning Recovery Total Earning Recovery Total (in millions) Activities Activities Consolidated Activities Activities Consolidated Operating revenue $ 3,597 $ 2,662 $ 6,259 $ 3,516 $ 2,244 $ 5,760 Purchased power and fuel — 2,296 2,296 2 1,994 1,996 Operation and maintenance 1,133 429 1,562 1,292 308 1,600 Wildfire Insurance Fund expense 107 — 107 167 — 167 Depreciation and amortization 1,056 1 1,057 972 — 972 Property and other taxes 241 1 242 213 — 213 Other operating income, net of impairment (11) — (11) (52) — (52) Total operating expenses 2,526 2,727 5,253 2,594 2,302 4,896 Operating income 1,071 (65) 1,006 922 (58) 864 Interest expense (380) (2) (382) (387) — (387) Other income 69 67 136 76 58 134 Income before taxes 760 — 760 611 — 611 Income tax expense (benefit) 52 — 52 (49) — (49) Net income 708 — 708 660 — 660 Less: Preferred and preference stock dividend requirements 53 — 53 60 — 60 Net income available for common stock $ 655 $ — $ 655 $ 600 $ — $ 600 Net income available for common stock $ 655 $ 600 Less: Non-core expense (80) (74) Core earnings1 $ 735 $ 674

1 See use of non-GAAP financial measures in "Management Overview—Highlights of Operating Results."

Earning Activities

Earning activities were primarily affected by the following:

● Higher operating revenue of $81 million primarily due to the following:

● An increase in CPUC-related revenue of $41 million primarily due to lower incremental tax benefits (offset in income taxes as discussed below).

● An increase in FERC-related revenue and other operating revenue of $40 million primarily due to FERC rate base growth and a $10 million increase in 2021 due to a change in estimate under the FERC formula rate mechanism.

● Lower operation and maintenance costs of $159 million primarily due to the following:

● Lower expenses of $43 million related to wildfire-mitigation costs including inspections and preventive maintenance.

● Lower expenses of $25 million subject to balancing account treatment.

● Lower employee benefit expenses of $22 million from short-term incentive compensation.

● Decreased expenses of $20 million related to the COVID-19 pandemic, primarily customer uncollectibles, as a result of CPUC authorized cost recovery of residential uncollectible costs.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document ● Decreased other expenses of $49 million primarily due to environmental remediation costs, legal expenses and worker's compensation costs.

● Lower Wildfire Insurance Fund expense of $60 million due to the change in the estimated life of the Wildfire Insurance Fund which increased the amortization period of SCE contributions in 2021. See "Notes to Consolidated Financial Statements—Note 12. Commitments and Contingences" for further information.

● Higher depreciation and amortization expense of $84 million primarily due to increased plant balances in 2021.

● Higher property and other taxes of $28 million primarily due to higher property assessed values in 2021.

● Lower other income of $7 million primarily due to lower interest income on balancing accounts and lower insurance benefits, partially offset by higher AFUDC equity income.

● Higher income tax expense of $101 million primarily due to higher pre-tax income, lower income tax benefits related to the flow-through of property-related items refunded to customers through balancing accounts (as discussed above) and a tax benefit in 2020 from the re-measurement of uncertain tax positions.

● Lower preferred and preference stock dividends of $7 million due to the redemption of preferred securities in 2020.

Cost-Recovery Activities

Operating revenue and the corresponding operating expenses in cost-recovery activities were primarily affected by the following:

● Higher purchased power and fuel costs of $302 million primarily due to higher power and gas prices from extreme winter weather in February 2021 and higher power and gas demand and higher capacity costs, partially offset by a CAISO generation surcharge of $59 million incurred in 2020.

● Higher operation and maintenance costs of $121 million due to the CAISO transmission refund received in 2020 for $66 million related to the CAISO generation surcharge mentioned above and the authorization to recover uncollectible costs through the RUBA and higher spending on customer service programs, partially offset by lower transmission access charges.

● Higher other income of $9 million due to primarily driven by higher net periodic benefit income related to the non-service cost components for SCE's other post-retirement benefit plans. See "Notes to Consolidated Financial Statements—Note 9. Compensation and Benefit Plans" for further information.

Supplemental Operating Revenue Information

SCE's retail billed and unbilled revenue (excluding wholesale sales) was $3.0 billion and $2.7 billion for the three months ended June 30, 2021 and 2020 respectively, and $5.7 billion and $5.3 billion for the six months ended June 30, 2021 and 2020, respectively.

The increase for the three months and six months ended June 30, 2021 compared to the same periods in 2020 is primarily due to higher cost-recovery activities related to higher purchased power and fuel costs driven by higher power and gas prices. See "—Cost-Recovery Activities" for further details.

As a result of the CPUC-authorized decoupling mechanism, SCE earnings are not affected by changes in retail electricity sales.

Income Taxes

SCE's income tax expense increased by $50 million and $101 million for the three and six months ended June 30, 2021 compared to the same period in 2020. The increase for the three months ended June 30, 2021 is primarily due to higher pre-tax income and lower flow-through tax benefits. The increase for the six months ended June 30, 2021 is primarily due to higher pre-tax income, lower flow-through tax benefits and a tax benefit recorded in 2020 from the re-measurement of uncertain tax positions.

The effective tax rates were 16.5% and 5.9% for the three months ended June 30, 2021 and 2020, respectively. The effective tax rates were 6.8% and (8.0)% for the six months ended June 30, 2021 and 2020, respectively. SCE's effective tax rate is below the federal statutory rate of 21% primarily due to CPUC's ratemaking treatment for the current tax benefit arising from certain property-related and other temporary differences, which reverse over time. The accounting treatment for these temporary differences results in recording regulatory assets and liabilities for amounts that would otherwise be recorded to deferred income tax expense.

See "Notes to Consolidated Financial Statements—Note 8. Income Taxes" for a reconciliation of the federal statutory rate to the effective income tax rates.

Edison International Parent and Other

Results of operations for Edison International Parent and Other include amounts from other subsidiaries that are not significant as a reportable segment, as well as intercompany eliminations.

Loss from Operations

The following table summarizes the results of Edison International Parent and Other:

Three months ended Six months ended June 30, June 30, (in millions) 2021 2020 2021 2020 Edison Energy Group and subsidiaries $ (2) $ (27) $ (5) $ (29) Corporate expenses and other subsidiaries (39) (36) (73) (70) Total Edison International Parent and Other $ (41) $ (63) $ (78) $ (99) Less: Non-core expense — (25) — (28) Core losses1 $ (41) $ (38) $ (78) $ (71)

1 See use of non-GAAP financial measures in "Management Overview—Highlights of Operating Results."

The loss from operations of Edison International Parent and Other decreased $22 million for the three months ended June 30, 2021 and decreased $21 million for the six months ended June 30, 2021 compared to the same period in 2020.

The decrease of losses for the three and six months ended June 30, 2021 is primarily due recognition of unrealized gains on investment in Proterra (see "Notes to Consolidated Financial Statements—Note 10. Investments"), and a goodwill impairment charge of $34 million ($25 million after-tax) recorded in 2020 related to Edison Energy stemming from the economic impact of COVID-19, partially offset by higher preferred dividend expense as a result of Edison International's preferred equity issuance in 2021.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Table of Contents

LIQUIDITY AND CAPITAL RESOURCES

SCE

SCE's ability to operate its business, fund capital expenditures, and implement its business strategy is dependent upon its cash flow and access to the bank and capital markets. SCE's overall cash flows fluctuate based on, among other things, its ability to recover its costs in a timely manner from its customers through regulated rates, changes in commodity prices and volumes, collateral requirements, interest obligations, dividend payments to and equity contributions from Edison International, obligations to preference shareholders, and the outcome of tax, regulatory and legal matters.

In the next 12 months, SCE expects to fund its cash requirements through operating cash flows, capital market financings, and equity contributions from Edison International Parent, as needed. SCE also has availability under its credit facilities to fund cash requirements.

In addition, in June 2021, SCE filed an application with the CPUC requesting to finance up to $1.0 billion of wildfire mitigation and customer uncollectible costs and associated financing costs through the issuance of securitized bonds. For further details, see "—Regulatory Proceedings—Financing Order."

In June 2021, SCE issued $475 million floating rate first and refunding mortgage bonds due in 2022, $450 million first and refunding mortgage bonds due in 2031 and $450 million first and refunding mortgage bonds due in 2051. For further details, see "Notes to Consolidated Financial Statements—Note 5. Debt and Credit Agreements." The proceeds were used to finance or refinance eligible sustainable projects, repay commercial paper borrowings and for general corporate purposes. Eligible sustainable projects include categories such as renewable energy, clean transportation, energy efficiency and carbon reduction, climate change adoption, and socioeconomic advancement and empowerment. SCE maintains processes to ensure that proceeds from the sale of the bonds are only used for projects that are aligned with the Edison International sustainable financing framework issued in June 2021.

In May 2021, SCE entered into a term loan in the amount of $1.2 billion with a termination date of May 2022. For further details, see "Notes to Consolidated Financial Statements—Note 5. Debt and Credit Agreements." SCE used the proceeds to finance certain capital projects that meet the green loan principles set forth by international loan market organizations including the Loan Syndications and Trading Association, including ongoing funding of projects that meet the green loan principles such as SCE's WCCP related to wildfire mitigation and repaying all outstanding indebtedness under its 364-day revolving credit agreement and term loan credit agreement, both entered into during March 2020 and previously used to fund such projects.

In April 2021, SCE issued $400 million of floating rate first and refunding mortgage bonds due in 2023, $400 million of floating rate first and refunding mortgage bonds due in 2024, $350 million of first and refunding mortgage bonds due in 2023 and $700 million of first and refunding mortgage bonds due in 2024. The floating rate bonds will pay interest at a floating rate equal to the Secured Overnight Financing Rate ("SOFR") plus a spread. For further details, see "Notes to Consolidated Financial Statements—Note 5. Debt and Credit Agreements." The proceeds of these issuances were used to fund the payment of wildfire claims exceeding insurance proceeds, including amounts paid under the Woolsey Subrogation Settlement.

In the first quarter of 2021, SCE Recovery Funding LLC, a bankruptcy remote, wholly owned special purpose subsidiary of SCE, issued $338 million of Senior Secured Recovery Bonds Series 2021-A ("Recovery Bonds") in three tranches, of $138 million, $100 million and $100 million with final maturities in 2033, 2040 and 2045, respectively, and used the proceeds of the Recovery Bonds to acquire SCE's right to collect charges associated with the AB 1054 Excluded Capital Expenditures from certain existing and future SCE customers ("Recovery Property"). SCE used the proceeds it received from the sale of the Recovery Property to reimburse itself for

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document previously incurred AB 1054 Excluded Capital Expenditures, including the retirement of related debt and financing costs. For further details, see "Notes to Consolidated Financial

Statements—Note 3. Variable Interest Entities," "Notes to Consolidated Financial Statements—Note 5. Debt and Credit Agreements" and "Notes to Consolidated Financial Statements—Note 11. Regulatory Assets and Liabilities."

In the first quarter of 2021, SCE issued $150 million and $750 million first and refunding mortgage bonds due in 2030 and 2051, respectively. For further details, see "Notes to Consolidated Financial Statements—Note 5. Debt and Credit Agreements." The proceeds were primarily used to repay SCE's commercial paper borrowings and for general corporate purposes.

During the first and second quarters of 2021, Edison International made equity contributions to SCE of $900 million and $325 million, respectively.

Edison International is issuing securities with equity content as viewed by rating agencies, such as common or preferred stock, in 2021, to enable SCE to issue debt to finance payments for resolution of wildfire claims related to the 2017/2018 Wildfire/Mudslide Events, including the debt SCE issued in April 2021 and for future resolution of claims, while allowing Edison International and SCE to maintain investment grade credit ratings. For further details, see "—Edison International Parent and Other."

The following table summarizes SCE's current, long-term issuer credit ratings and outlook from the major credit rating agencies:

Moody's Fitch S&P Credit Rating Baa2 BBB- BBB Outlook Stable Stable Negative

SCE's credit ratings may be further affected if, among other things, regulators fail to successfully implement AB 1054 in a consistent and credit supportive manner or the Wildfire Insurance Fund is depleted by claims from catastrophic wildfires. Credit rating downgrades increase the cost and may impact the availability of short-term and long-term borrowings, including commercial paper, credit facilities, bond financings or other borrowings. In addition, some of SCE's power procurement contracts require SCE to pay related liabilities or post additional collateral if SCE's credit rating were to fall below investment grade. Incremental collateral requirements for power procurement contracts and environmental remediation obligations would result from a potential downgrade of SCE's credit rating to below investment grade. For further details, see "—Margin and Collateral Deposits."

The cost of capital mechanism set by the CPUC could impact SCE's results of operations and cash flows. The benchmark value for the current mechanism is the 12-month, October 1, 2018 through September 30, 2019, average Moody's Baa utility bond yield of 4.5%. If the difference between the benchmark and the average of the same index for the 12-month period to September 30, 2021 exceeds 100-basis points, SCE's CPUC-authorized ROE will be adjusted for 2022 by half the amount of the difference (up or down). If the mechanism is triggered, SCE's costs of long-term debt and preferred equity will also be adjusted for 2022 to reflect the then current embedded costs and projected interest rates. The average Moody's Baa utility bond yield between October 1, 2020 and July 22, 2021 was 3.36%. The spot rate for Moody's Baa utility bond was 3.18% on July 22, 2021 and an average Moody's Baa utility bond yield of 4.04% or less from July 23, 2021 through September 30, 2021 will trigger the mechanism. SCE is required to file its next cost of capital application by April 2022 for rates effective beginning January 2023. For further information see "Business—SCE— Overview of Ratemaking Process" in the 2020 Form 10-K.

Available Liquidity

At June 30, 2021, SCE had cash on hand of $51 million.

In April 2021, SCE amended its June 2019 revolving credit facility to increase the commitment amount by $350 million, bringing the total to $3.4 billion and extend the termination date to May 2025. For further details, see "Notes to Consolidated Financial Statements—Note 5. Debt and Credit Agreements." The aggregate maximum principal amount under the SCE revolving credit facility may be increased up to $4.0 billion, provided that additional lender commitments are obtained. At June 30, 2021 SCE had $175 million outstanding commercial paper, net of discount, at a weighted-average interest rate of 0.23%.

SCE may finance balancing account undercollections and working capital requirements to support operations and capital expenditures with commercial paper, its credit facilities or other borrowings, subject to availability in the bank and capital markets. As necessary, SCE will utilize its available liquidity, capital market financings, other borrowings or parent company contributions to SCE equity in order to meet its obligations as they become due, including costs related to the 2017/2018 Wildfire/Mudslide Events. For further information, see "Management Overview—Southern California Wildfires and Mudslides."

Debt Covenant

SCE's credit facilities and term loan require a debt to total capitalization ratio as defined in the applicable agreements of less than or equal to 0.65 to 1. At June 30, 2021, SCE's debt to total capitalization ratio was 0.53 to 1.

At June 30, 2021, SCE was in compliance with all financial covenants that affect access to capital.

Regulatory Proceedings

Wildfire Related Regulatory Proceedings

2021 General Rate Case Wildfire Mitigation Memorandum Account Balances

SCE's GRC track 2 expenditures, which occurred during 2018 and 2019, predominantly related to enhanced overhead inspections, an expanded vegetation management program and expert consultant contract labor costs supporting SCE's wildfire mitigation activities. The majority of these expenditures were recorded in the WMP memorandum account and the FHPMA.

In January 2021, the CPUC approved a settlement between the parties to track 2 of the 2021 GRC, which led to a $41 million increase to regulatory deferrals for 2018 – 2019 in the fourth quarter of 2020. The revenue requirement under the settlement was $391 million, after adjusting for flow-through taxes. Due to the determination that the AB 1054 Excluded Capital Expenditures associated with track 2 were reasonably incurred, they were eligible for recovery through securitization, and were not part of the settlement revenue requirement. For information on securitization of the approved expense, see "—Financing Order."

In March 2021, SCE made its 2021 GRC track 3 filing with the CPUC. In its filing, SCE requested reasonableness review of approximately $1.2 billion of wildfire mitigation costs incurred prior to 2021, consisting of $476 million of incremental operations and maintenance expenses and $679 million of incremental capital expenditures. The track 3 expenditures predominantly related to grid hardening, vegetation management, PSPS activities and enhancements to grid operations. The capital expenditures included $502 million of GS&RP capital expenditures not previously subject to settlement.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document The $679 million in incremental capital expenditures to be reviewed by the CPUC in track 3 are AB 1054 Excluded Capital Expenditures. After receipt of a final decision in track 3, SCE intends to seek a financing order from the CPUC to securitize

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Table of Contents these expenses if such expenses are deemed reasonable by the CPUC. In its track 3 filing, SCE requested recovery through customer rates of the $497 million of incremental operations and maintenance expenses and other costs.

The CPUC schedule for SCE's 2021 GRC includes a proposed decision on track 3 in the first quarter of 2022.

2020 Emergency Wildfire Restoration

Multiple wildfires occurred during 2020 which caused damage within SCE's service territory and to SCE's Big Creek hydroelectric facility. Restoration work is ongoing in relation to these wildfires. Through the second quarter of 2021, SCE has recorded $228 million of incremental operation and maintenance expenses and $316 million of incremental capital expenditures in relation to these restoration efforts. SCE expects to file CEMA requests for recovery of amounts incremental to authorized revenue requirements. If approved, the CEMA applications are expected to add approximately $350 million to rate base by 2023.

2019 CEMA Application

In July 2019, SCE filed a CEMA application with the CPUC to seek recovery of $79 million of operation and maintenance expenses related to 2017 – 2018 drought mitigation efforts and $8 million of revenue requirement associated with $60 million of capital expenditures and capital related expenses related to six 2017 wildfires.

In July 2021, the CPUC issued a proposed decision which, if approved, would authorize full recovery of requested drought restoration costs and approve a revenue requirement of $81 million. However, the proposed decision, if adopted, would deny without prejudice SCE's application to recover a revenue requirement for all six 2017 wildfires on the basis that SCE did not demonstrate that it was prudent in relation to the Thomas and Rye fires. CAL FIRE has determined that the Thomas and Rye fires were caused by SCE equipment. While the proposed decision, if adopted, would allow SCE to submit additional applications with the CPUC to recover those costs, SCE must segregate the restoration costs attributable to each of the six fires in any future applications for recovery. The proposed decision also directs that SCE must prove it was prudent in relation to the Thomas and Rye fires in any future application for recovery of those costs and must file any such application within 18 months of a final decision. SCE challenged some aspects of the proposed decision, including the application of the prudency standard with regards to fires in a CEMA proceeding and the 18-month deadline to file an application if the prudency standard is applied.

As of June 30, 2021, SCE has $189 million recorded in property, plant and equipment in relation to restoration costs related to the 2017/2018 Wildfire/Mudslide Events which may not be recoverable. These assets would be impaired if permanently disallowed by the CPUC in future cost recovery proceedings, which would reduce authorized rate base.

Financing order

In June 2021, SCE filed an application for an irrevocable order from the CPUC to finance up to $1.0 billion of wildfire mitigation and customer uncollectible costs and associated financing costs through the issuance of securitized bonds. These costs consist of approximately $518 million of AB 1054 Excluded Capital Expenditures, comprised of $219 million approved in the 2021 GRC track 2 settlement and $299 million to be incurred in 2021 and pending authorization in track 1 of the GRC, $401 million of wildfire-related operations and maintenance expenditures approved in the GRC track 2 settlement, and $78 million of incremental residential uncollectible expenses associated with the economic effects of the COVID-19 pandemic. To the extent SCE's total uncollectible expenses are offset by the CAPP, SCE would reduce the residential uncollectible expenses amount to be securitized by the amount offset by the CAPP.

2022 FERC Formula Rate Annual Update

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document In June 2021, SCE provided its preliminary 2022 annual transmission revenue requirement update to interested parties. The update reflects an increase in SCE's transmission revenue requirement of $311 million or 28.6% higher than amounts

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Table of Contents included in the 2021 annual rates. The increase is primarily due to the portion of charges for wildfire-related claims recorded in 2020 subject to recovery from FERC customers, increased plant in service and recovery of prior year undercollections. SCE expects to file its 2021 annual update with the FERC by December 1, 2021 with the proposed rates effective January 1, 2022.

CAISO mid-term reliability

In June 2021, the CPUC issued a decision addressing the mid-term reliability needs of the CAISO electric system by requiring at least an aggregate of 11,500 MW of additional net qualifying capacity to be procured collectively by all of the load-serving entities subject to the CPUC's integrated resource planning authority. The aggregate additional capacity is required by 2026, with 2,000 MW required by 2023, an additional 6,000 MW required by 2024, an additional 1,500 MW required by 2025, and an additional 2,000 MW required by 2026. SCE's allocation of the requirements is 687 MW by 2023, 2,060 MW by 2024, 515 MW by 2025, 687 MW by 2026, for a total of 3,949 MW.

Capital Investment Plan

Major Transmission Projects

West of Devers

The West of Devers Project consists of upgrading and reconfiguring approximately 48 miles of existing 220-kV transmission lines between the Devers, El Casco, Vista and San Bernardino substations, increasing the power transfer capabilities in support of California's renewable portfolio standards goals. The project was placed in service in May 2021.

In July 2021, Morongo Transmission LLC ("Morongo") paid SCE $400 million for use of a portion of the project's transfer capability. Under the terms of the agreement with Morongo, SCE will provide Morongo with use of a portion of the West of Devers transmission line transfer capability for a period of 30 years. After the 30-year contract term, the use of the transfer capability will revert to SCE. For further details, see "Notes to Consolidated Financial Statements—Note 7. Revenue."

Eldorado-Lugo-Mohave Upgrade

Construction for the project began in November 2020 and the project is expected to be operational in June 2022. On January 20, 2021, the Secretary of the Interior issued a suspension order that effectively placed a 60-day hold on any new project construction on federal land. In February 2021, the Department of the Interior issued a waiver of the suspension order allowing the project to proceed.

Margin and Collateral Deposits

Certain derivative instruments, power and energy procurement contracts and other contractual arrangements contain collateral requirements. In addition, certain environmental remediation obligations require financial assurance that may be in the form of collateral postings. Future collateral requirements may differ from the requirements at June 30, 2021 due to the addition of incremental power and energy procurement contracts with collateral requirements, if any, the impact of changes in wholesale power and natural gas prices on SCE's contractual obligations and the impact of SCE's credit ratings falling below investment grade.

The table below provides the amount of collateral posted by SCE to its counterparties as well as the potential collateral that would have been required as of June 30, 2021, if SCE's credit rating had been downgraded to below investment grade as of that date. The table below also provides the potential collateral that could be

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document required due to adverse changes in wholesale power and natural gas prices over the remaining lives of existing power and energy procurement contracts.

In addition to amounts shown in the table, power and fuel contract counterparties may also institute new collateral requirements, applicable to future transactions to allow SCE to continue trading in power and fuel contracts at the time of a

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Table of Contents downgrade or upon significant increases in market prices. Furthermore, SCE may also be required to post up to $50 million in collateral in connection with its environmental remediation obligations, within 120 days of the end of the fiscal year in which the downgrade occurs.

(in millions) Collateral posted as of June 30, 20211 $ 127 Incremental collateral requirements for purchased power and fuel contracts resulting from a potential downgrade of SCE's credit rating to below investment grade2 66 Incremental collateral requirements for purchased power and fuel contracts resulting from adverse market price movement3 27 Posted and potential collateral requirements $ 220

1 Net collateral provided to counterparties and other brokers consisted of $127 million in letters of credit and surety bonds.

2 Represents collateral requirements for accounts payable and market-to-market valuation at June 30, 2021. Requirement varies throughout the period and is generally lower at the end of the month.

3 Incremental collateral requirements were based on potential changes in SCE's forward positions as of June 30, 2021 due to adverse market price movements over the remaining lives of the existing power contracts using a 95% confidence level.

Edison International Parent and Other

In the next 12 months, Edison International expects to fund its net cash requirements through cash on hand, dividends from SCE, and capital market and bank financings. Edison International may finance its ongoing cash requirements, including common stock dividends, working capital requirements, payment of obligations, and capital investments, including capital contributions to subsidiaries, with short-term or other financings, subject to availability in the bank and capital markets.

At June 30, 2021, Edison International Parent had cash on hand of $33 million.

In April 2021, Edison International Parent amended its June 2019 revolving credit facility to extend the termination date to May 2025. At June 30, 2021 Edison International Parent had $25 million outstanding commercial paper, net of discount, at a weighted-average interest rate of 0.32% on its $1.5 billion revolving credit facility. The aggregate maximum principal amount under the Edison International Parent revolving credit facility may be increased up to $2.0 billion, provided that additional lender commitments are obtained.

Edison International is issuing securities with equity content as viewed by rating agencies, such as common or preferred stock, up to approximately $1.0 billion in 2021 to enable SCE to issue debt to finance payments for resolution of wildfire claims related to the 2017/2018 Wildfire/Mudslide Events, including the debt SCE issued in April 2021 and debt for future resolution of claims, while allowing Edison International and SCE to maintain investment grade credit ratings.

In the first quarter of 2021, Edison International issued 1,250,000 shares of its 5.375% Fixed-Rate Reset Cumulative Perpetual Preferred Stock, Series A, liquidation value of $1,000 per share (the "Series A Preferred Stock"), regarded by rating agencies as having 50% equity content. The proceeds were used to repay Edison International's commercial paper borrowings and for general corporate purposes, including making a $575 million equity contribution to SCE. For further details, see "Notes to Consolidated Financial Statements—Note 13. Equity."

Edison International will consider issuing additional preferred equity, common stock through employee compensation and stock purchase programs and if needed further issuances through the existing at-the-market program to satisfy any remaining equity needs.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Edison International Parent expects to make further capital contributions to SCE in 2021 to maintain the common equity component of SCE's capital structure, after CPUC allowed exclusions, at 52% on a weighted average basis over the Capital Structure Compliance Period. For further information, see "—SCE—SCE Dividends" in the 2020 MD&A.

Edison International Parent and Other's liquidity and its ability to pay operating expenses and pay dividends to common shareholders are dependent on access to the bank and capital markets, dividends from SCE, realization of tax benefits and its ability to meet California law requirements for the declaration of dividends. Prior to declaring dividends, Edison International's Board of Directors evaluates available information, including when applicable, information pertaining to the 2017/2018 Wildfire/Mudslide Events, to ensure that the California law requirements for the declarations are met. For information on the California law requirements on the declaration of dividends, see "—SCE—SCE Dividends" in the 2020 MD&A. Edison International intends to maintain its target payout ratio of 45% – 55% of SCE's core earnings, subject to the factors identified above.

Edison International's ability to declare and pay common dividends may be restricted under the terms of the Series A Preferred Stock. For further information see "Notes to Consolidated Financial Statements—Note 13. Equity."

Edison International Parent's credit facility requires a consolidated debt to total capitalization ratio as defined in the applicable agreements of less than or equal to 0.70 to 1. At June 30, 2021, Edison International's consolidated debt to total capitalization ratio was 0.60 to 1.

At June 30, 2021, Edison International Parent was in compliance with all financial covenants that affect access to capital.

The following table summarizes Edison International Parent's current long-term issuer credit ratings and outlook from the major credit rating agencies:

Moody's Fitch S&P Long-term Issuer Credit Rating Baa3 BBB- BBB Outlook Stable Stable Negative

Edison International Parent's credit ratings may be further affected if, among other things, regulators fail to successfully implement AB 1054 in a consistent and credit supportive manner or the Wildfire Insurance Fund is depleted by claims from catastrophic wildfires. Credit rating downgrades increase the cost and may impact the availability of short-term and long-term borrowings, including commercial paper, credit facilities, note financings or other borrowings.

Historical Cash Flows

SCE

Six months ended June 30, (in millions) 2021 2020 Net cash (used in) provided by operating activities $ (1,283) $ 683 Net cash provided by financing activities 3,689 1,931 Net cash used in investing activities (2,411) (2,384) Net (decrease) increase in cash, cash equivalents and restricted cash $ (5) $ 230

Net Cash (Used in) Provided by Operating Activities

The following table summarizes major categories of net cash (used in) provided by operating activities as provided in more detail in SCE's consolidated statements of cash flows for the six months ended June 30, 2021 and 2020.

Six months ended June 30, Change in cash flows (in millions) 2021 2020 2021/2020 Net income $ 708 $ 660 Non-cash items1 1,189 1,067 Subtotal 1,897 1,727 $ 170 Changes in cash flow resulting from working capital2 (309) (120) (189) Regulatory assets and liabilities (574) (927) 353 Other noncurrent assets and liabilities3 (2,297) 3 (2,300) Net cash (used in) provided by operating activities $ (1,283) $ 683 $ (1,966)

1 Non-cash items include depreciation and amortization, allowance for equity during construction, deferred income taxes, Wildfire Insurance Fund amortization expenses and other.

2 Changes in working capital items include receivables, accrued unbilled revenue, prepaid expenses, inventory, accounts payable, tax receivables and payables, and other current assets and liabilities.

3 Includes changes in wildfire-related insurance receivables and wildfire-related claims. Also includes nuclear decommissioning trusts. See "Nuclear Decommissioning Activities" below for further information.

Net cash (used in) provided by operating activities was impacted by the following:

Net income and non-cash items increased in 2021 by $170 million primarily due to lower expenses related to wildfire mitigation activities and employee benefits and higher FERC revenue.

Net cash outflow for working capital was $309 million and $120 million during the six months ended June 30, 2021 and 2020, respectively. Net cash outflow for working capital increased in 2021 mainly due to an increase in unbilled revenue and customer receivables of $523 million in 2021 compared to $245 million in 2020.

Net cash used in regulatory assets and liabilities, including increases in net undercollections recorded in balancing accounts, was $574 million and $927 million during the six months ended June 30, 2021 and 2020, respectively. SCE has a number of balancing and memorandum accounts, which impact cash flows based on differences between timing of collection of amounts through rates and accrual expenditures. Cash flows were primarily impacted by the following:

2021

● Net undercollections of BRRBA were $665 million and $622 million at June 30, 2021 and December 31, 2020, respectively. Net undercollections increased by $43 million primarily driven by current year undercollections due to timing of billing during CSRP implementation, partially offset by recovery of prior year undercollections, including WEMA and GS&RP to be collected over a two-year and one-year period, respectively, starting October 2020.

● Undercollections of $300 million related to wildfire-related expenses that are probable of future recovery from customers, including wildfire risk mitigation costs, insurance premiums, service restoration and damage repair costs. See "Notes to Consolidated Financial Statements—Note 11. Regulatory Assets and Liabilities" for further information.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document ● Undercollections of $35 million of revenue requirements related to service restoration and damage repair costs that were tracked in CEMA accounts, primarily due to wildfire events in 2020. See "Notes to Consolidated Financial Statements—Note 11. Regulatory Assets and Liabilities" for further information.

● Net undercollections for ERRA, PABA and the New System Generation Balancing Account increased by $22 million primarily due to current year undercollections due to higher gas and power prices, partially offset by recovery of prior PABA and NSGBA undercollections.

● Net undercollections of $59 million related to customer uncollectible expenses from COVID-19-related memorandum and balancing accounts.

● Undercollection of $31 million in the CSRP memorandum account related to CSRP implementation costs.

2020

● Net undercollections of BRRBA were $239 million at June 30, 2020, compared to net overcollections of $328 million at December 31, 2019. Net undercollections increased by $567 million primarily due to refunds of prior overcollections (including incremental tax benefits and overcollections of distribution revenue that are being refunded over an 18-month period, starting in July 2019, as part of SCE's 2018 GRC decision) and current year undercollections primarily due to a delay in rate change in 2020 and lower than forecasted sales volume.

● Undercollections of $311 million related to wildfire-related expenses that are probable of future recovery from customers, including wildfire risk mitigation costs, insurance premiums, service restoration and damage repair costs.

● Lower cash due to issuance of California climate credits of $314 million to customers. The second semi- annual payment normally made in the fourth quarter was brought forward into the second quarter of 2020 pursuant to an April 2020 CPUC decision, partially offset by $232 million of overcollections related to GHG auction revenue and low carbon fuel standard credit sales.

● Net undercollections of FERC balancing accounts were $32 million at June 30, 2020, compared to net overcollections of $127 million at December 31, 2019. Net undercollections increased by $159 million primarily due to refunds of prior overcollections, lower than forecasted sales volumes and higher operation and maintenance costs mainly due to vegetation management and overhead line maintenance.

● Net undercollections for ERRA, PABA and the New System Generation Balancing Account decreased by $178 million primarily due to recovery of prior ERRA undercollections, current year overcollection resulting from lower gas and energy prices, partially offset by lower sales than forecasted in rates in ERRA, refunds of prior overcollections from the New System Generation Balancing Account and refund of 2019 and 2018 overcollections of generation revenue over an 18-month period, starting in July 2019, as part of SCE's 2018 GRC decision.

Cash flows (used in) provided by other noncurrent assets and liabilities were primarily related to wildfire claim payments of $(2.9) billion, partially offset by insurance recoveries of $708 million in the first six months of 2021. In the same period in 2020 there were wildfire related insurance recoveries of $73 million and no wildfire claims payments. Cash flow for other noncurrent assets and liabilities also includes payments of decommissioning costs ($128 million in 2021 and $98 million in 2020, respectively), and SCE's net (losses) earnings from nuclear decommissioning trust investments ($(15) million in 2021 and $49 million in 2020, respectively). See "Nuclear Decommissioning Activities" below for further discussion.

Net Cash Provided by Financing Activities

The following table summarizes cash provided by financing activities for the six months ended June 30, 2021 and 2020. Issuances of debt are discussed in "Notes to Consolidated Financial Statements—Note 5. Debt and Credit Agreements."

Six months ended June 30, (in millions) 2021 2020 Issuances of first and refunding mortgage bonds, including premium/discount and net of issuance costs $ 3,952 $ 2,330 Long-term debt repaid or repurchased (991) (414) Commercial paper financing, net (551) (550) Short-term debt financing, net 751 475 Capital contributions from Edison International Parent 1,225 888 Payment of common stock dividends to Edison International (650) (738) Payment of preferred and preference stock dividends (53) (60) Other 6 — Net cash provided by financing activities $ 3,689 $ 1,931

Net Cash Used in Investing Activities

Cash flows used in investing activities are primarily due to capital expenditures related to transmission and distribution investments ($2.6 billion and $2.5 billion for the six months ended June 30, 2021 and 2020, respectively). In addition, SCE had a net redemption of nuclear decommissioning trust investments of $127 million and $62 million during the six months ended June 30, 2021 and 2020, respectively. See "Nuclear Decommissioning Activities" below for further discussion.

Nuclear Decommissioning Activities

SCE's consolidated statements of cash flows include nuclear decommissioning activities, which are reflected in the following line items:

Six months ended June 30, (in millions) 2021 2020 Net cash used in operating activities: Net (losses) earnings from nuclear decommissioning trust investments $ (15) $ 49 SCE’s decommissioning costs (128) (98) Net cash provided by investing activities: Proceeds from sale of investments 2,542 3,225 Purchases of investments (2,415) (3,163) Net cash impact $ (16) $ 13

Net cash used in operating activities relates to interest and dividends less administrative expenses, taxes and SCE's decommissioning costs. Investing activities represent the purchase and sale of investments within the nuclear decommissioning trusts, including the reinvestment of earnings from nuclear decommissioning trust investments. The net cash impact reflects timing of decommissioning payments ($128 million and $98 million in 2021 and 2020, respectively) and reimbursements to SCE from the nuclear decommissioning trust ($112 million and $111 million in 2021 and 2020, respectively).

Edison International Parent and Other

The table below sets forth condensed historical cash flow from operations for Edison International Parent and Other, including intercompany eliminations.

Six months ended June 30, (in millions) 2021 2020 Net cash used in operating activities $ (91) $ (58) Net cash provided by financing activities 93 292 Net cash used in investing activities (1) (8) Net increase in cash and cash equivalents $ 1 $ 226

Net Cash Used in Operating Activities

Net cash used in operating activities was impacted by the following:

● $91 million and $58 million cash outflow from operating activities in 2021 and 2020, respectively, primarily due to payments relating to interest and operating costs.

Net Cash Provided by Financing Activities

Net cash provided by financing activities was as follows:

Six months ended June 30, (in millions) 2021 2020 Dividends paid to Edison International common shareholders $ (494) $ (454) Dividends received from SCE 650 738 Capital contributions to SCE (1,225) (888) Issuance of common stock 25 884 Issuance of preferred stock, net of issuance costs 1,235 — Long-term debt issuance, net of discount and issuance costs — 396 Long-term debt repayments — (400) Commercial paper repayment, net (105) — Other 7 16 Net cash provided by financing activities $ 93 $ 292

Contingencies

SCE has contingencies related to wildfire and debris flow events, wildfire insurance, environmental remediation, nuclear insurance, spent nuclear fuel and the Upstream Lighting Program, which are discussed in "Notes to Consolidated Financial Statements—Note 12. Commitments and Contingencies."

MARKET RISK EXPOSURES

Edison International's and SCE's primary market risks are described in the 2020 Form 10-K. For further discussion of market risk exposures, including commodity price risk, credit risk, and interest rate risk, see "Notes to Consolidated Financial Statements—Note 4. Fair Value Measurements" and "—Note 6. Derivative Instruments."

Commodity Price Risk

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document SCE records derivative instruments on its consolidated balance sheets as either assets or liabilities measured at fair value unless otherwise exempted from derivative treatment as normal purchases or sales. The fair value of outstanding derivative instruments used to mitigate exposure to commodity price risk was reflected as a net asset of $89 million and $108 million on SCE's consolidated balance sheets at June 30, 2021 and December 31, 2020, respectively. For further discussion of fair value

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Table of Contents measurements and the fair value hierarchy, see "Notes to Consolidated Financial Statements—Note 4. Fair Value Measurements" and "— Note 6. Derivative Instruments."

Credit Risk

Credit risk exposure from counterparties for power and gas trading activities is measured as the sum of net accounts receivable (accounts receivable less accounts payable) and the current fair value of net derivative assets (derivative assets less derivative liabilities) reflected on the consolidated balance sheets. SCE enters into master agreements which typically provide for a right of setoff. Accordingly, SCE's credit risk exposure from counterparties is based on a net exposure under these arrangements. SCE manages the credit risk on the portfolio of counterparties based on credit ratings and other publicly disclosed information, such as financial statements, regulatory filings and press releases, to guide it in the process of setting credit levels, risk limits and contractual arrangements, including master netting agreements. Based on SCE's policies and risk exposures related to credit, SCE does not anticipate a material adverse effect on their financial statements as a result of counterparty nonperformance. At June 30, 2021, SCE's power and gas trading counterparty credit risk exposure was $85 million, which is associated with entities that have an investment grade rating of A or higher. SCE assigns a credit rating to counterparties based on the lower of a counterparty's S&P or Moody's rating.

For more information related to credit risks, see "Notes to Consolidated Financial Statements—Note 6. Derivative Instruments."

CRITICAL ACCOUNTING ESTIMATES AND POLICIES

For a discussion of Edison International's and SCE's critical accounting policies, see "Critical Accounting Estimates and Policies" in the 2020 MD&A.

NEW ACCOUNTING GUIDANCE

New accounting guidance is discussed in "Notes to Consolidated Financial Statements—Note 1. Summary of Significant Accounting Policies—New Accounting Guidance."

QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Information responding to this section is included in the MD&A under the heading "Market Risk Exposures" and is incorporated herein by reference.

FINANCIAL STATEMENTS

Consolidated Statements of Income Edison International

Three months ended Six months ended June 30, June 30, (in millions, except per-share amounts, unaudited) 2021 2020 2021 2020 Total operating revenue $ 3,315 $ 2,987 $ 6,275 $ 5,777 Purchased power and fuel 1,283 1,068 2,296 1,996 Operation and maintenance 754 762 1,598 1,643 Wildfire Insurance Fund expense 54 83 107 167 Depreciation and amortization 533 489 1,058 973 Property and other taxes 117 103 243 214 Other operating income, net of impairment (11) (18) (11) (18) Total operating expenses 2,730 2,487 5,291 4,975 Operating income 585 500 984 802 Interest expense (232) (229) (449) (454) Other income 76 81 148 133 Income before income taxes 429 352 683 481 Income tax expense (benefit) 68 4 32 (80) Net income 361 348 651 561 Preferred and preference stock dividend requirements of SCE 26 30 53 60 Preferred stock dividend requirement of Edison International 17 — 21 — Net income attributable to Edison International common shareholders $ 318 $ 318 $ 577 $ 501 Basic earnings per share: Weighted average shares of common stock outstanding 380 375 379 367 Basic earnings per common share attributable to Edison International common shareholders $ 0.84 $ 0.85 $ 1.52 $ 1.37 Diluted earnings per share: Weighted average shares of common stock outstanding, including effect of dilutive securities 380 376 380 368 Diluted earnings per common share attributable to Edison International common shareholders $ 0.84 $ 0.85 $ 1.52 $ 1.36

The accompanying notes are an integral part of these consolidated financial statements.

Consolidated Statements of Comprehensive Income Edison International

Three months ended Six months ended June 30, June 30, (in millions, unaudited) 2021 2020 2021 2020 Net income $ 361 $ 348 $ 651 $ 561 Other comprehensive income, net of tax: Pension and postretirement benefits other than pensions 2 2 4 4 Other comprehensive income, net of tax 2 2 4 4 Comprehensive income 363 350 655 565 Less: Comprehensive income attributable to noncontrolling interests 26 30 53 60 Comprehensive income attributable to Edison International $ 337 $ 320 $ 602 $ 505

The accompanying notes are an integral part of these consolidated financial statements.

Consolidated Balance Sheets Edison International

June 30, December 31, (in millions, unaudited) 2021 2020 ASSETS Cash and cash equivalents $ 84 $ 87 Receivables, less allowances of $270 and $188 for uncollectible accounts at respective dates 1,314 1,130 Accrued unbilled revenue 863 521 Insurance receivable — 708 Income tax receivables — 68 Inventory 406 405 Prepaid expenses 57 281 Regulatory assets 1,795 1,314 Wildfire Insurance Fund contributions 204 323 Other current assets 198 224 Total current assets 4,921 5,061 Nuclear decommissioning trusts 4,886 4,833 Marketable securities 21 — Other investments 58 53 Total investments 4,965 4,886 Utility property, plant and equipment, less accumulated depreciation and amortization of $10,878 and $10,681 at respective dates 48,800 47,653 Nonutility property, plant and equipment, less accumulated depreciation of $96 and $94 at respective dates 189 186 Total property, plant and equipment 48,989 47,839 Regulatory assets (includes $329 at June 30, 2021 related to Variable Interest Entities "VIEs") 7,810 7,120 Wildfire Insurance Fund contributions 2,462 2,443 Operating lease right-of-use assets 1,047 1,088 Long-term insurance receivables 75 75 Other long-term assets 893 860 Total long-term assets 12,287 11,586 Total assets $ 71,162 $ 69,372

The accompanying notes are an integral part of these consolidated financial statements.

Consolidated Balance Sheets Edison International

June 30, December 31, (in millions, except share amounts, unaudited) 2021 2020 LIABILITIES AND EQUITY Short-term debt $ 2,821 $ 2,398 Current portion of long-term debt 415 1,029 Accounts payable 1,797 1,980 Wildfire-related claims 141 2,231 Customer deposits 207 243 Regulatory liabilities 492 569 Current portion of operating lease liabilities 216 215 Other current liabilities 1,726 1,612 Total current liabilities 7,815 10,277 Long-term debt (includes $320 at June 30, 2021 related to VIEs) 22,891 19,632 Deferred income taxes and credits 5,614 5,368 Pensions and benefits 543 563 Asset retirement obligations 2,894 2,930 Regulatory liabilities 8,960 8,589 Operating lease liabilities 831 873 Wildfire-related claims 1,519 2,281 Other deferred credits and other long-term liabilities 2,782 2,910 Total deferred credits and other liabilities 23,143 23,514 Total liabilities 53,849 53,423 Commitments and contingencies (Note 12) Preferred stock (50,000,000 shares authorized; 1,250,000 shares issued and outstanding at June 30, 2021) 1,235 — Common stock, no par value (800,000,000 shares authorized; 379,695,134 and 378,907,147 shares issued and outstanding at respective dates) 6,013 5,962 Accumulated other comprehensive loss (65) (69) Retained earnings 8,229 8,155 Total Edison International's shareholders' equity 15,412 14,048 Noncontrolling interests – preference stock of SCE 1,901 1,901 Total equity 17,313 15,949 Total liabilities and equity $ 71,162 $ 69,372

The accompanying notes are an integral part of these consolidated financial statements.

Consolidated Statements of Cash Flows Edison International

Six months ended June 30, (in millions, unaudited) 2021 2020 Cash flows from operating activities: Net income $ 651 $ 561 Adjustments to reconcile to net cash provided by operating activities: Depreciation and amortization 1,090 1,005 Allowance for equity during construction (60) (51) Impairment and other (11) (18) Deferred income taxes 30 (58) Wildfire Insurance Fund amortization expense 107 167 Other 11 32 Nuclear decommissioning trusts (127) (62) Changes in operating assets and liabilities: Receivables (293) (108) Inventory (3) (19) Accounts payable 128 14 Tax receivables and payables 91 31 Other current assets and liabilities (244) (23) Regulatory assets and liabilities, net (574) (927) Wildfire-related insurance receivable 708 73 Wildfire-related claims (2,852) — Other noncurrent assets and liabilities (26) 8 Net cash (used in) provided by operating activities (1,374) 625 Cash flows from financing activities: Long-term debt issued, plus premium and net of discount and issuance costs of $(36) and $26 for the respective periods 3,953 2,726 Long-term debt repaid or repurchased (991) (814) Short-term debt issued 2,106 1,275 Short-term debt repaid (1,355) (800) Common stock issued 25 884 Preferred stock issued, net 1,235 — Commercial paper repayment, net of borrowing (656) (550) Dividends and distribution to noncontrolling interests (53) (60) Dividends paid (494) (454) Other 12 16 Net cash provided by financing activities 3,782 2,223 Cash flows from investing activities: Capital expenditures (2,593) (2,514) Proceeds from sale of nuclear decommissioning trust investments 2,542 3,225 Purchases of nuclear decommissioning trust investments (2,415) (3,163) Other 54 60 Net cash used in investing activities (2,412) (2,392) Net (decrease) increase in cash, cash equivalents and restricted cash (4) 456 Cash, cash equivalents and restricted cash at beginning of period 89 70 Cash, cash equivalents and restricted cash at end of period $ 85 $ 526

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document The accompanying notes are an integral part of these consolidated financial statements.

Consolidated Statements of Income Southern California Edison Company

Three months ended Six months ended June 30, June 30, (in millions, unaudited) 2021 2020 2021 2020 Operating revenue $ 3,306 $ 2,980 $ 6,259 $ 5,760 Purchased power and fuel 1,283 1,068 2,296 1,996 Operation and maintenance 735 741 1,562 1,600 Wildfire Insurance Fund expense 54 83 107 167 Depreciation and amortization 533 489 1,057 972 Property and other taxes 117 103 242 213 Other operating income, net of impairment (11) (52) (11) (52) Total operating expenses 2,711 2,432 5,253 4,896 Operating income 595 548 1,006 864 Interest expense (198) (193) (382) (387) Other income 64 82 136 134 Income before taxes 461 437 760 611 Income tax expense (benefit) 76 26 52 (49) Net income 385 411 708 660 Less: Preferred and preference stock dividend requirements 26 30 53 60 Net income available for common stock $ 359 $ 381 $ 655 $ 600

Consolidated Statements of Comprehensive Income Southern California Edison Company

Three months ended Six months ended June 30, June 30, (in millions, unaudited) 2021 2020 2021 2020 Net income $ 385 $ 411 $ 708 $ 660 Other comprehensive income, net of tax: Pension and postretirement benefits other than pensions 1 1 3 3 Other comprehensive income, net of tax 1 1 3 3 Comprehensive income $ 386 $ 412 $ 711 $ 663

The accompanying notes are an integral part of these consolidated financial statements.

Consolidated Balance Sheets Southern California Edison Company

June 30, December 31, (in millions, unaudited) 2021 2020 ASSETS Cash and cash equivalents $ 51 $ 55 Receivables, less allowances of $270 and $188 for uncollectible accounts at respective dates 1,305 1,126 Accrued unbilled revenue 863 521 Insurance receivable — 440 Insurance receivable from affiliate — 268 Income tax receivables — 69 Inventory 406 405 Prepaid expenses 56 280 Regulatory assets 1,795 1,314 Wildfire Insurance Fund contributions 204 323 Other current assets 191 216 Total current assets 4,871 5,017 Nuclear decommissioning trusts 4,886 4,833 Other investments 50 37 Total investments 4,936 4,870 Utility property, plant and equipment, less accumulated depreciation and amortization of $10,878 and $10,681 at respective dates 48,800 47,653 Nonutility property, plant and equipment, less accumulated depreciation of $87 and $86 at respective dates 183 180 Total property, plant and equipment 48,983 47,833 Regulatory assets (includes $329 at June 30, 2021 related to VIEs) 7,810 7,120 Wildfire Insurance Fund contributions 2,462 2,443 Operating lease right-of-use assets 1,040 1,085 Long-term insurance receivables 75 75 Other long-term assets 861 843 Total long-term assets 12,248 11,566 Total assets $ 71,038 $ 69,286

The accompanying notes are an integral part of these consolidated financial statements.

Consolidated Balance Sheets Southern California Edison Company

June 30, December 31, (in millions, except share amounts, unaudited) 2021 2020 LIABILITIES AND EQUITY Short-term debt $ 2,796 $ 2,268 Current portion of long-term debt 415 1,029 Accounts payable 1,799 1,983 Wildfire-related claims 141 2,231 Customer deposits 207 243 Regulatory liabilities 492 569 Current portion of operating lease liabilities 216 214 Other current liabilities 1,288 1,294 Total current liabilities 7,354 9,831 Long-term debt (includes $320 at June 30, 2021 related to VIEs) 19,756 16,499 Deferred income taxes and credits 7,052 6,783 Pensions and benefits 131 144 Asset retirement obligations 2,894 2,930 Regulatory liabilities 8,960 8,589 Operating lease liabilities 824 871 Wildfire-related claims 1,519 2,281 Other deferred credits and other long-term liabilities 2,661 2,708 Total deferred credits and other liabilities 24,041 24,306 Total liabilities 51,151 50,636 Commitments and contingencies (Note 12) Preference stock 1,945 1,945 Common stock, no par value (560,000,000 shares authorized; 434,888,104 shares issued and outstanding at respective dates) 2,168 2,168 Additional paid-in capital 6,616 5,387 Accumulated other comprehensive loss (38) (41) Retained earnings 9,196 9,191 Total equity 19,887 18,650 Total liabilities and equity $ 71,038 $ 69,286

The accompanying notes are an integral part of these consolidated financial statements.

Consolidated Statements of Cash Flows Southern California Edison Company

Six months ended June 30, (in millions, unaudited) 2021 2020 Cash flows from operating activities: Net income $ 708 $ 660 Adjustments to reconcile to net cash provided by operating activities: Depreciation and amortization 1,086 1,001 Allowance for equity during construction (60) (51) Impairment and other income (11) (52) Deferred income taxes 51 (22) Wildfire Insurance Fund amortization expense 107 167 Other 16 24 Nuclear decommissioning trusts (127) (62) Changes in operating assets and liabilities: Receivables (288) (114) Inventory (3) (19) Accounts payable 127 (12) Tax receivables and payables 91 47 Other current assets and liabilities (236) (22) Regulatory assets and liabilities, net (574) (927) Wildfire-related insurance receivable 708 73 Wildfire-related claims (2,852) — Other noncurrent assets and liabilities (26) (8) Net cash (used in) provided by operating activities (1,283) 683 Cash flows from financing activities: Long-term debt issued, plus premium and net of discount and issuance costs of $(36) and $30 for the respective periods 3,952 2,330 Long-term debt repaid (991) (414) Short-term debt borrowed 2,106 475 Short-term debt repaid (1,355) — Capital contributions from Edison International Parent 1,225 888 Commercial paper repayment, net of borrowing (551) (550) Dividends paid (703) (798) Other 6 — Net cash provided by financing activities 3,689 1,931 Cash flows from investing activities: Capital expenditures (2,591) (2,512) Proceeds from sale of nuclear decommissioning trust investments 2,542 3,225 Purchases of nuclear decommissioning trust investments (2,415) (3,163) Other 53 66 Net cash used in investing activities (2,411) (2,384) Net (decrease) increase in cash, cash equivalents and restricted cash (5) 230 Cash, cash equivalents and restricted cash at beginning of period 56 24 Cash, cash equivalents and restricted cash at end of period $ 51 $ 254

The accompanying notes are an integral part of these consolidated financial statements.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Note 1. Summary of Significant Accounting Policies

Organization and Basis of Presentation

Edison International is the parent holding company of Southern California Edison Company ("SCE") and Edison Energy Group, Inc. ("Edison Energy Group"). SCE is an investor-owned public utility primarily engaged in the business of supplying and delivering electricity to an approximately 50,000 square mile area of Southern California. Edison Energy Group is an indirect wholly-owned subsidiary of Edison International and a holding company for Edison Energy, LLC ("Edison Energy") which is engaged in the competitive business of providing data driven energy solutions to commercial, institutional and industrial customers. Edison Energy's business activities are currently not material to report as a separate business segment. These combined notes to the consolidated financial statements apply to both Edison International and SCE unless otherwise described. Edison International's consolidated financial statements include the accounts of Edison International, SCE, and other wholly owned and controlled subsidiaries. References to Edison International refer to the consolidated group of Edison International and its subsidiaries. References to "Edison International Parent and Other" refer to Edison International Parent and its competitive subsidiaries and "Edison International Parent" refer to Edison International on a stand-alone basis, not consolidated with its subsidiaries. SCE's consolidated financial statements include the accounts of SCE, its wholly owned and controlled subsidiaries and a variable interest entity of which SCE is the primary beneficiary, SCE Recovery Funding LLC. All intercompany transactions have been eliminated from the consolidated financial statements.

Edison International's and SCE's significant accounting policies were described in the "Notes to Consolidated Financial Statements" included in Edison International's and SCE's combined Annual Report on Form 10-K for the year ended December 31, 2020 (the "2020 Form 10-K"). This quarterly report should be read in conjunction with the financial statements and notes included in the 2020 Form 10-K.

In the opinion of management, all adjustments, consisting only of adjustments of a normal recurring nature, have been made that are necessary to fairly state the consolidated financial position, results of operations, and cash flows in accordance with accounting principles generally accepted in the United States ("GAAP") for the periods covered by this quarterly report on Form 10-Q. The results of operations for the six-month periods ended June 30, 2021 are not necessarily indicative of the operating results for the full year. Certain prior period amounts have been conformed to the current period's presentation.

The December 31, 2020 financial statement data was derived from audited financial statements but does not include all disclosures required by GAAP.

Cash, Cash Equivalents and Restricted Cash

Cash equivalents include investments in money market funds. Generally, the carrying value of cash equivalents equals the fair value, as these investments have original maturities of three months or less. The cash equivalents were as follows:

Edison International SCE June 30, December 31, June 30, December 31, (in millions) 2021 2020 2021 2020 Money market funds $ 47 $ 62 $ 20 $ 38

Cash is temporarily invested until required for check clearing. Checks issued, but not yet paid by the financial institution, are reclassified from cash to accounts payable at the end of each reporting period as follows:

Edison International SCE June 30, December 31, June 30, December 31, (in millions) 2021 2020 2021 2020 Book balances reclassified to accounts payable $ 61 $ 69 $ 61 $ 69

The following table sets forth the cash, cash equivalents and restricted cash included in the consolidated statements of cash flows:

June 30, December 31, (in millions) 2021 2020 Edison International: Cash and cash equivalents $ 84 $ 87 Short-term restricted cash1 1 2 Total cash, cash equivalents, and restricted cash $ 85 $ 89 SCE: Cash and cash equivalents $ 51 $ 55 Short-term restricted cash1 — 1 Total cash, cash equivalents, and restricted cash $ 51 $ 56

1 Reflected in "Other current assets" on Edison International's and SCE's consolidated balance sheets.

Allowance for Uncollectible Accounts

The allowance for uncollectible accounts is recorded based on SCE's estimate of expected credit losses and adjusted over the life of the receivables as needed. Since the customer base of SCE is concentrated in Southern California and exposes SCE to a homogeneous set of economic conditions, the allowance is measured on a collective basis on the historical amounts written-off, assessment of customer collectability and current economic trends, including unemployment rates and any likelihood of recession for the region. At June 30, 2021, this included the estimated impacts of the COVID-19 pandemic.

The following tables set forth the changes in allowance for uncollectible accounts for SCE:

Three months ended Three months ended June 30, 2021 June 30, 2020 (in millions) Customers All others Total Customers All others Total Beginning balance $ 210 $ 16 $ 226 $ 47 $ 13 $ 60 Plus: current period provision for uncollectible accounts Included in operation and maintenance expenses 12 3 15 12 5 17 Deferred to regulatory assets 32 — 32 21 — 21 Less: write-offs, net of recoveries — 3 3 5 3 8 Ending balance $ 254 $ 16 $ 270 $ 75 $ 15 $ 90

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Deferred to regulatory assets 66 — 66 21 — 21 Less: write-offs, net of recoveries 5 4 9 9 6 15 Ending balance $ 254 $ 16 $ 270 $ 75 $ 15 $ 90

Revenue Recognition

Regulatory Proceedings

2021 General Rate Case

If adopted, the proposed decision would lead to an impairment of utility property, plant and equipment of up to $78 million ($56 million after-tax) related to disallowed historical capital expenditures.

The CPUC has approved the establishment of a memorandum account making the authorized revenue requirement changes effective January 1, 2021. SCE cannot predict the revenue requirement the CPUC will ultimately authorize. SCE is recognizing revenue based on the 2020 authorized revenue requirement until a GRC decision is issued.

Employee Stock Purchase Plan

In April 2021, the Edison International Employee Stock Purchase Plan ("ESPP") was approved by the shareholders and was effective beginning July 1, 2021. The maximum aggregate numbers of shares of Edison International's common stock that may be issued under the ESPP is 3,000,000 shares. The ESPP is administered by the SCE Benefits Committee and allows eligible employees to purchase shares of common stock. Eligible employees may authorize payroll deductions of between 1% and 10% of their compensation, up to a maximum of $25,000, to purchase shares of common stock at 97% of the market price of the common stock on the date of purchase, which is the last day of each six months offering period. The ESPP is considered non-compensatory and stock issuances under the ESPP will be recorded directly in equity.

Earnings Per Share

Edison International computes earnings per common share ("EPS") using the two-class method, which is an earnings allocation formula that determines EPS for each class of common stock and participating security. Edison International's participating securities are stock-based compensation awards, payable in common shares, which earn dividend equivalents on an equal basis with common shares once the awards are vested. See Note 13 for further information.

EPS attributable to Edison International common shareholders was computed as follows:

Three months ended Six months ended June 30, June 30, (in millions, except per-share amounts) 2021 2020 2021 2020 Basic earnings per share: Net income attributable to common shareholders $ 318 $ 318 $ 577 $ 501 Participating securities dividends — — — — Net income available to common shareholders $ 318 $ 318 $ 577 $ 501 Weighted average common shares outstanding 380 375 379 367 Basic earnings per share $ 0.84 $ 0.85 $ 1.52 $ 1.37 Diluted earnings per share: Net income attributable to common shareholders $ 318 $ 318 $ 577 $ 501 Participating securities dividends — — — — Net income available to common shareholders $ 318 $ 318 $ 577 $ 501 Income impact of assumed conversions — — — — Net income available to common shareholders and assumed conversions $ 318 $ 318 $ 577 $ 501 Weighted average common shares outstanding 380 375 379 367 Incremental shares from assumed conversions — 1 1 1 Adjusted weighted average shares – diluted 380 376 380 368 Diluted earnings per share $ 0.84 $ 0.85 $ 1.52 $ 1.36

In addition to the participating securities discussed above, Edison International also may award stock options, which are payable in common shares and are included in the diluted earnings per share calculation. Stock option awards to purchase 11,327,374 and 9,187,178 shares of common stock for the three months ended June 30, 2021 and 2020, respectively, and 11,369,725 and 8,587,661 shares of common stock for the six months ended June 30, 2021 and 2020, respectively were outstanding, but were not included in the computation of diluted earnings per share because the effect would have been antidilutive.

New Accounting Guidance

Accounting Guidance Adopted

In August 2020, the FASB issued an accounting standards update to simplify the accounting for certain financial instruments with characteristics of liabilities and equity. The amendments in this update affect entities that issue convertible instruments indexed to or potentially settled in an entity's own equity. This guidance also simplifies an entity's application of the derivatives scope exception for contracts in its own equity and amends certain aspects of the EPS guidance. Edison International and SCE have adopted this standard on January 1, 2021 using modified retrospective adoption approach. The adoption of this standard did not have a material impact on Edison International's and SCE's financial position or results of operations.

Note 2. Consolidated Statements of Changes in Equity

The following table provides Edison International's changes in equity for the three and six months ended June 30, 2021:

Noncontrolling Equity Attributable to Edison International Shareholders Interests Accumulated Other Preferred Common Comprehensive Retained Preference Total (in millions, except per share amounts) Stock Stock Loss Earnings Subtotal Stock Equity Balance at December 31, 2020 $ — $ 5,962 $ (69) $ 8,155 $14,048 $ 1,901 $15,949 Net income — — — 263 263 27 290 Other comprehensive income — — 2 — 2 — 2 Common stock issued, net of issuance cost — 21 — — 21 — 21 Preferred stock issued, net of issuance cost 1,237 — — — 1,237 — 1,237 Common stock dividends declared ($0.6625 per share) — — — (251) (251) — (251) Preferred stock dividend accrued ($3.434 per share) — — — (4) (4) — (4) Dividends to noncontrolling interests ($15.625 - $35.936 per share for preference stock) — — — — — (27) (27) Noncash stock-based compensation — 6 — — 6 — 6 Balance at March 31, 2021 $ 1,237 $ 5,989 $ (67) $ 8,163 $15,322 $ 1,901 $17,223 Net income — — — 335 335 26 361 Other comprehensive income — — 2 — 2 — 2 Common stock issued, net of issuance cost — 14 — — 14 — 14 Preferred stock issuance cost (2) — — — (2) — (2) Common stock dividends declared ($0.6625 per share) — — — (252) (252) — (252) Preferred stock dividend accrued ($13.2882 per share) — — — (17) (17) — (17) Dividends to noncontrolling interests ($15.625 - $35.936 per share for preference stock) — — — — — (26) (26) Noncash stock-based compensation — 10 — — 10 — 10 Balance at June 30, 2021 $ 1,235 $ 6,013 $ (65) $ 8,229 $15,412 $ 1,901 $17,313

The following table provides Edison International's changes in equity for the three and six months ended June 30, 2020:

Noncontrolling Equity Attributable to Edison International Shareholders Interests Accumulated Preferred Other and Preferred Common Comprehensive Retained Preference Total (in millions, except per share amounts) Stock Stock Loss Earnings Subtotal Stock Equity Balance at December 31, 2019 $ — $ 4,990 $ (69) $ 8,382 $13,303 $ 2,193 $15,496 Net income — — — 183 183 30 213 Other comprehensive income — — 2 — 2 — 2 Common stock issued, net of issuance cost — 88 — — 88 — 88 Common stock dividends declared ($0.6375 per share) — — — (232) (232) — (232) Dividends to noncontrolling interests ($0.255 - $0.299 per share for preferred stock; $15.625 - $35.936 per share for preference stock) — — — — — (30) (30) Noncash stock-based compensation — 7 — — 7 — 7 Balance at March 31, 2020 $ — $ 5,085 $ (67) $ 8,333 $13,351 $ 2,193 $15,544 Net income — — — 318 318 30 348 Other comprehensive income — — 2 — 2 — 2 Common stock issued, net of issuance cost — 815 — — 815 — 815 Common stock dividends declared ($0.6375 per share) — — — (241) (241) — (241) Dividends to noncontrolling interests ($0.255 - $0.299 per share for preferred stock; $15.625 - $35.936 per share for preference stock) — — — — — (30) (30) Noncash stock-based compensation — 8 — — 8 — 8 Balance at June 30, 2020 $ — $ 5,908 $ (65) $ 8,410 $14,253 $ 2,193 $16,446

The following table provides SCE's changes in equity for the three and six months ended June 30, 2021:

Accumulated Additional Other Preference Common Paid-in Comprehensive Retained Total (in millions, except per share amounts) Stock Stock Capital Loss Earnings Equity Balance at December 31, 2020 $ 1,945 $ 2,168 $ 5,387 $ (41) $ 9,191 $18,650 Net income — — — — 323 323 Other comprehensive income — — — 2 — 2 Capital contribution from Edison International Parent — — 900 — — 900 Dividends declared on common stock ($0.7473 per share) — — — — (325) (325) Dividends on preference stock ($15.625 - $35.936 per share) — — — — (27) (27) Stock-based compensation — — (4) — — (4) Noncash stock-based compensation — — 3 — — 3 Balance at March 31, 2021 $ 1,945 $ 2,168 $ 6,286 $ (39) $ 9,162 $19,522 Net income — — — — 385 385 Other comprehensive income — — — 1 — 1 Capital contribution from Edison International Parent — — 325 — — 325 Dividends declared on common stock ($0.7473 per share) — — — — (325) (325) Dividends declared on preference stock ($15.625 - $35.936 per share) — — — — (26) (26) Noncash stock-based compensation — — 5 — — 5 Balance at June 30, 2021 $ 1,945 $ 2,168 $ 6,616 $ (38) $ 9,196 $19,887

The following table provides SCE's changes in equity for the three and six months ended June 30, 2020:

Preferred Accumulated and Additional Other Preference Common Paid-in Comprehensive Retained Total (in millions, except per share amounts) Stock Stock Capital Loss Earnings Equity Balance at December 31, 2019 $ 2,245 $ 2,168 $ 3,939 $ (39) $ 9,514 $17,827 Net income — — — — 249 249 Other comprehensive income — — — 2 — 2 Capital contribution from Edison International Parent — — 269 — — 269 Dividends declared on common stock ($0.6185 per share) — — — — (269) (269) Dividends declared on preferred stock ($0.255 - $0.299 per share) and preference stock (15.625 - $35.936 per share) — — — — (30) (30) Stock-based compensation — — (5) — — (5) Noncash stock-based compensation — — 4 — (1) 3 Balance at March 31, 2020 $ 2,245 $ 2,168 $ 4,207 $ (37) $ 9,463 $18,046 Net income — — — — 411 411 Other comprehensive income — — — 1 — 1 Capital contribution from Edison International Parent — — 619 — — 619 Dividends declared on common stock ($0.6185 per share) — — — — (269) (269) Dividends declared on preferred and preference stock ($0.255 - $0.299 per share for preferred stock; $15.625 - $35.936 per share for preference stock) — — — — (30) (30) Noncash stock-based compensation — — 3 — — 3 Balance at June 30, 2020 $ 2,245 $ 2,168 $ 4,829 $ (36) $ 9,575 $18,781

Note 3. Variable Interest Entities

A variable interest entity ("VIE") is defined as a legal entity that meets one of two conditions: (1) the equity owners do not have sufficient equity at risk, or (2) the holders of the equity investment at risk, as a group, lack any of the following three characteristics: decision-making rights, the obligation to absorb losses or the right to receive the expected residual returns of the entity. The primary beneficiary is identified as the variable interest holder that has both the power to direct the activities of the VIE that most significantly impact the entity's economic performance and the obligation to absorb losses or the right to receive benefits from the entity that could potentially be significant to the VIE. The primary beneficiary is required to consolidate the VIE. Commercial and operating activities are generally the factors that most significantly impact the economic performance of such VIEs. Commercial and operating activities include construction, operation and maintenance, fuel procurement, dispatch and compliance with regulatory and contractual requirements.

Variable Interest in VIEs that are Consolidated

SCE Recovery Funding LLC is a bankruptcy remote, wholly owned special purpose subsidiary, consolidated by SCE. SCE Recovery Funding LLC is a VIE and SCE is the primary beneficiary. SCE Recovery Funding LLC was formed in 2021 for the purpose of issuing and servicing securitized bonds related to SCE's AB 1054 Excluded Capital Expenditures.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document During the first quarter of 2021, SCE Recovery Funding LLC issued $338 million of securitized bonds in three tranches and used the proceeds to acquire SCE's right, title and interest in and to non-bypassable rates and other charges to be collected from certain existing and future customers in SCE's service territory, associated with the AB 1054 Excluded Capital

Expenditures ("Recovery Property"), until the bonds are paid in full and all financing costs have been recovered. The securitized bond is secured by the Recovery Property and cash collections from the non-bypassable rates and other charges are the sole source of funds to satisfy the debt obligation. The bondholders have no recourse to SCE. For further details, see Note 5.

The following table summarizes the impact of SCE Recovery Funding LLC on SCE's and Edison International's consolidated balance sheets.

(in millions) June 30, 2021 Regulatory assets $ 2 Other current assets 6 Regulatory assets: Non-current 329 Current portion of long-term debt (14) Other current liabilities (3) Long-term debt1 (320)

1 The bondholders have no recourse to SCE.

Variable Interest in VIEs that are not Consolidated

Power Purchase Agreements ("PPAs")

SCE has PPAs that are classified as variable interests in VIEs, including agreements through which SCE provides the natural gas to fuel the plants and fixed price contracts for renewable energy. SCE has concluded that it is not the primary beneficiary of these VIEs since it does not control the commercial and operating activities of these entities. Since payments for capacity are the primary source of income, the most significant economic activity for these VIEs is the operation and maintenance of the power plants.

As of the balance sheet date, the carrying amount of assets and liabilities in SCE's consolidated balance sheets that relate to involvement with VIEs result from amounts due under the PPAs. Under these contracts, SCE recovers the costs incurred through demonstration of compliance with its CPUC-approved long-term power procurement plans. SCE has no residual interest in the entities and has not provided or guaranteed any debt or equity support, liquidity arrangements, performance guarantees, or other commitments associated with these contracts other than the purchase commitments described in Note 12 of the 2020 Form 10-K. As a result, there is no significant potential exposure to loss to SCE from its variable interest in these VIEs. The aggregate contracted capacity dedicated to SCE from these VIE projects was 3,889 megawatts ("MW") and 6,583 MW at June 30, 2021 and 2020, respectively, and the amounts that SCE paid to these projects were $153 million and $150 million for the three months ended June 30, 2021 and 2020, respectively, and $312 million and $301 million for the six months ended June 30, 2021 and 2020, respectively. These amounts are recoverable in customer rates, subject to reasonableness review.

Unconsolidated Trusts of SCE

SCE Trust II, Trust III, Trust IV, Trust V, and Trust VI were formed in 2013, 2014, 2015, 2016, and 2017, respectively, for the exclusive purpose of issuing the 5.10%, 5.75%, 5.375%, 5.45%, and 5.00% trust preference securities, respectively ("trust securities"). The trusts are VIEs. SCE has concluded that it is not the primary beneficiary of these VIEs as it does not have the obligation to absorb the expected losses or the right to receive the expected residual returns of the trusts. SCE Trust II, Trust III, Trust IV, Trust V and Trust VI issued to the public trust securities in the face amounts of $400 million, $275 million, $325 million, $300 million, and $475 million (cumulative, liquidation amounts of $25 per share), respectively, and $10,000 of common stock each to SCE. The trusts invested the proceeds of these trust securities in Series G, Series H, Series J, Series K, and Series L Preference Stock issued by SCE in the principal amounts of $400 million, $275 million,

$325 million, $300 million, and $475 million (cumulative, $2,500 per share liquidation values), respectively, which have substantially the same payment terms as the respective trust securities.

The Series G, Series H, Series J, Series K, and Series L Preference Stock and the corresponding trust securities do not have a maturity date. Upon any redemption of any shares of the Series G, Series H, Series J, Series K, or Series L Preference Stock, a corresponding dollar amount of trust securities will be redeemed by the applicable trust. The applicable trust will make distributions at the same rate and on the same dates on the applicable series of trust securities if and when the SCE board of directors declares and makes dividend payments on the related Preference Stock. The applicable trust will use any dividends it receives on the related Preference Stock to make its corresponding distributions on the applicable series of trust securities. If SCE does not make a dividend payment to any of these trusts, SCE would be prohibited from paying dividends on its common stock. SCE has fully and unconditionally guaranteed the payment of the trust securities and trust distributions, if and when SCE pays dividends on the related Preference Stock.

The Trust II, Trust III, Trust IV, Trust V and Trust VI balance sheets as of June 30, 2021 and December 31, 2020 consisted of investments of $220 million, $275 million, $325 million, $300 million, and $475 million in the Series G, Series H, Series J, Series K and Series L Preference Stock, respectively, $220 million, $275 million, $325 million, $300 million, and $475 million of trust securities, respectively, and $10,000 each of common stock.

The following table provides a summary of the trusts' income statements:

Three months ended June 30, (in millions) Trust II Trust III Trust IV Trust V Trust VI 2021 Dividend income $ 5 $ 4 $ 5 $ 4 $ 6 Dividend distributions 5 4 5 4 6 2020 Dividend income $ 5 $ 4 $ 5 $ 4 $ 6 Dividend distributions 5 4 5 4 6

Six months ended June 30, (in millions) Trust II Trust III Trust IV Trust V Trust VI 2021 Dividend income $ 10 $ 8 $ 9 $ 8 $ 12 Dividend distributions 10 8 9 8 12 2020 Dividend income $ 10 $ 8 $ 9 $ 8 $ 12 Dividend distributions 10 8 9 8 12

Note 4. Fair Value Measurements

Recurring Fair Value Measurements

Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date (referred to as an "exit price"). Fair value of an asset or liability considers assumptions that market participants would use in pricing the asset or liability, including assumptions about nonperformance risk. As of June 30, 2021 and December 31, 2020, nonperformance risk was not material for Edison International and SCE.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Assets and liabilities are categorized into a three-level fair value hierarchy based on valuation inputs used to determine fair value.

Level 1 – The fair value of Edison International's and SCE's Level 1 assets and liabilities is determined using unadjusted quoted prices in active markets that are available at the measurement date for identical assets and liabilities. This level includes exchange-traded equity securities, U.S. treasury securities, mutual funds, and money market funds.

Level 2 – Edison International's and SCE's Level 2 assets and liabilities include fixed income securities, primarily consisting of U.S. government and agency bonds, municipal bonds and corporate bonds, and over-the- counter derivatives. The fair value of fixed income securities is determined using a market approach by obtaining quoted prices for similar assets and liabilities in active markets and inputs that are observable, either directly or indirectly, for substantially the full term of the instrument.

The fair value of SCE's over-the-counter derivative contracts is determined using an income approach. SCE uses standard pricing models to determine the net present value of estimated future cash flows. Inputs to the pricing models include forward published or posted clearing prices from an exchange (Intercontinental Exchange) for similar instruments and discount rates. A primary price source that best represents trade activity for each market is used to develop observable forward market prices in determining the fair value of these positions. Broker quotes, prices from exchanges, or comparison to executed trades are used to validate and corroborate the primary price source. These price quotations reflect mid-market prices (average of bid and ask) and are obtained from sources believed to provide the most liquid market for the commodity.

Level 3 – The fair value of SCE's Level 3 assets and liabilities is determined using an income approach through various models and techniques that require significant unobservable inputs. This level includes derivative contracts that trade infrequently such as congestion revenue rights ("CRRs"). Edison International Parent and Other does not have any Level 3 assets and liabilities.

Assumptions are made in order to value derivative contracts in which observable inputs are not available. In circumstances where fair value cannot be verified with observable market transactions, it is possible that a different valuation model could produce a materially different estimate of fair value. Modeling methodologies, inputs, and techniques are reviewed and assessed as markets continue to develop and more pricing information becomes available and the fair value is adjusted when it is concluded that a change in inputs or techniques would result in a new valuation that better reflects the fair value of those derivative contracts. See Note 6 for a discussion of derivative instruments.

SCE

The following table sets forth assets and liabilities of SCE that were accounted for at fair value by level within the fair value hierarchy:

June 30, 2021 Netting and (in millions) Level 1 Level 2 Level 3 Collateral1 Total Assets at fair value Derivative contracts $ — $ 55 $ 77 $ (43) $ 89 Money market funds and other 20 23 — — 43 Nuclear decommissioning trusts: Stocks2 1,905 — — — 1,905 Fixed Income3 891 1,745 — — 2,636 Short-term investments, primarily cash equivalents 253 166 — — 419 Subtotal of nuclear decommissioning trusts4 3,049 1,911 — — 4,960 Total assets 3,069 1,989 77 (43) 5,092 Liabilities at fair value Derivative contracts — 7 10 (17) —

December 31, 2020 Netting and (in millions) Level 1 Level 2 Level 3 Collateral1 Total Assets at fair value Derivative contracts $ — $ 6 $ 120 $ (18) $ 108 Money market funds and other 39 23 — — 62 Nuclear decommissioning trusts: Stocks2 1,908 — — — 1,908 Fixed Income3 519 2,113 — — 2,632 Short-term investments, primarily cash equivalents 447 52 — — 499 Subtotal of nuclear decommissioning trusts4 2,874 2,165 — — 5,039 Total assets 2,913 2,194 120 (18) 5,209 Liabilities at fair value Derivative contracts — 10 12 (22) — Total liabilities — 10 12 (22) — Net assets $ 2,913 $ 2,184 $ 108 $ 4 $ 5,209

1 Represents the netting of assets and liabilities under master netting agreements and cash collateral.

2 Approximately 73% and 71% of SCE's equity investments were in companies located in the United States at June 30, 2021 and December 31, 2020, respectively.

3 Includes corporate bonds, which were diversified by the inclusion of collateralized mortgage obligations and other asset backed securities, of $32 million and $29 million at June 30, 2021 and December 31, 2020, respectively.

4 Excludes net payables of $74 million and $206 million at June 30, 2021 and December 31, 2020, respectively, which consist of payables and receivables related to SCE's pending securities purchases and sales as well as interest and dividend receivables.

Edison International Parent and Other

Edison International Parent and Other assets measured at fair value and classified as Level 1 consisted of $21 million in an equity investment as of June 30, 2021 and money market funds of $27 million and $24 million at June 30, 2021 and December 31, 2020, respectively, and classified as Level 2 consisted of short-term investments of $4 million and $5 million at June 30, 2021 and December 30, 2020, respectively.

SCE Fair Value of Level 3

The following table sets forth a summary of changes in SCE's fair value of Level 3 net derivative assets and liabilities:

Three months ended Six months ended June 30, June 30, (in millions) 2021 2020 2021 2020 Fair value of net assets at beginning of period $ 91 $ 52 $ 108 $ 78 Purchases — — — 8 Sales (1) (3) (1) (4) Settlements (2) (6) (16) (26) Total realized/unrealized losses 1,2 (21) (9) (24) (22) Fair value of net assets at end of period $ 67 $ 34 $ 67 $ 34

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document 1 Due to regulatory mechanisms, SCE's realized and unrealized gains and losses are recorded as regulatory assets and liabilities.

2 There were no material transfers into or out of Level 3 during 2021 and 2020.

The following table sets forth SCE's valuation techniques and significant unobservable inputs used to determine fair value for significant Level 3 assets and liabilities:

Fair Value Significant Weighted (in millions) Valuation Unobservable Range Average Assets Liabilities Technique Input (per MWh) (per MWh) Congestion revenue rights CAISO CRR Auction auction June 30, 2021 $ 77 $ 10 prices prices $(1.39) - $44.46 $ 2.31 CAISO CRR Auction auction December 31, 2020 120 12 prices prices (9.67) - 300.47 2.75

Level 3 Fair Value Uncertainty

For CRRs, increases or decreases in CAISO auction prices would result in higher or lower fair value, respectively, as of June 30, 2021.

Nuclear Decommissioning Trusts

SCE's nuclear decommissioning trust investments include equity securities, U.S. treasury securities, and other fixed income securities. Equity and treasury securities are classified as Level 1 as fair value is determined by observable market prices in active or highly liquid and transparent markets. The remaining fixed income securities are classified as Level 2. There are no securities classified as Level 3 in the nuclear decommissioning trusts.

Fair Value of Debt Recorded at Carrying Value

The carrying value and fair value of Edison International's and SCE's long-term debt (including current portion of long-term debt) are as follows:

June 30, 2021 December 31, 2020 Carrying Fair Carrying Fair (in millions) Value1 Value2 Value1 Value2 Edison International $ 23,306 $ 25,527 $ 20,337 $ 23,824 SCE 20,171 22,156 17,204 20,365

1 Carrying value is net of debt issuance costs.

2 The fair value of Edison International's and SCE's short-term and long-term debt is classified as Level 2.

Note 5. Debt and Credit Agreements

Long-Term Debt

In the first quarter of 2021, SCE issued $150 million of 2.25% first and refunding mortgage bonds due in 2030 and $750 million of 2.95% first and refunding mortgage bonds due in 2051. The proceeds were primarily used to repay SCE's commercial paper borrowings and for general corporate purposes.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document bonds due in 2024, $350 million of 0.70% first and refunding mortgage bonds due in 2023 and $700 million of 1.10% first and refunding mortgage bonds due in 2024. The proceeds of these issuances were used to fund the payment of wildfire claims exceeding insurance proceeds and repay commercial paper borrowings that were used to fund the payment of wildfire claims, including amounts paid under the Woolsey Subrogation Settlement.

In June 2021, SCE issued $450 million of 2.50% first and refunding mortgage bonds due in 2031 and $450 million of 3.65% first and refunding mortgage bonds due in 2051. The proceeds were used to finance or refinance eligible sustainable projects.

Senior Secured Recovery Bonds

During the first quarter of 2021, SCE Recovery Funding LLC issued $338 million of Senior Secured Recovery Bonds, Series 2021-A, in three tranches ("Recovery Bonds") and used the proceeds to acquire SCE's right, title and interest in and to non-bypassable rates and other charges associated with the AB 1054 Excluded Capital Expenditures to be collected from certain existing and future customers in SCE's service territory ("Recovery Property"). The three tranches of Recovery Bonds consisted of: $138 million, 0.86% with final maturity in 2033; $100 million, 1.94% with final maturity in 2040; and $100 million, 2.51% with final maturity in 2045. The Recovery Bonds are payable only from and secured by the Recovery Property. SCE Recovery Funding LLC is consolidated by SCE for financial reporting purposes, however, the Recovery Bonds do not constitute a debt or other legal obligation of, or interest in, SCE or any of its affiliates, except for SCE Recovery Funding LLC. SCE used the proceeds it received from the sale of Recovery Property to reimburse itself for previously incurred AB 1054 Excluded Capital Expenditures, including the retirement of related debt and financing costs. For further details, see Note 3.

Credit Agreements and Short-Term Debt

The following table summarizes the status of the credit facilities at June 30, 2021:

(in millions, except for rates) Execution Termination SOFR Outstanding Outstanding Amount date date plus (bps) Use of proceeds Commitment borrowings letters of credit available Edison International Parent Support commercial paper borrowings and general corporate June 2019 May 2025 128 purposes1, 2 $ 1,500 $ 25 $ — $ 1,475 Total Edison International Parent: $ 1,500 $ 25 $ — $ 1,475 SCE Support commercial paper borrowings and general corporate June 2019 May 2025 108 purposes2, 3 $ 3,350 $ 175 $ 120 $ 3,055 Total SCE: $ 3,350 $ 175 $ 120 $ 3,055 Total Edison International: $ 4,850 $ 200 $ 120 $ 4,530

1 At June 30, 2021 Edison International Parent had $25 million outstanding commercial paper, net of discount, at a weighted-average interest rate of 0.32%.

2 In April 2021, SCE and Edison International Parent amended their respective revolving credit facilities to extend each of the termination dates to May 2025 and implement the transition from LIBOR to SOFR. Additionally, SCE and the lenders agreed to increase the commitment amount by $350 million, bringing the total to $3.4 billion. The aggregate maximum principal amount under the SCE and Edison International Parent revolving credit facilities may be increased up to $4.0 billion and $2.0 billion, respectively, provided that additional lender commitments are obtained.

3 At June 30, 2021 SCE had $175 million outstanding commercial paper, net of discount, at a weighted-average interest rate of 0.23%.

Term loan and other short-term debt

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document In May 2021, SCE borrowed $1.2 billion under a term loan agreement due in May 2022 with a variable interest rate based on SOFR plus 0.60%. SCE used the proceeds to repay all outstanding indebtedness under SCE's 364-day revolving credit agreement and term loan credit agreement, both entered into during March 2020, for $800 million and $148 million,

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Table of Contents respectively, and to finance certain capital projects related to wildfire mitigation that meet the green loan principles set forth by international loan market organizations including the Loan Syndications and Trading Association.

In June 2021, SCE issued $475 million of SOFR plus 0.35% first and refunding mortgage bonds due in 2022. The proceeds were used to repay commercial paper borrowings and for general corporate purposes.

Note 6. Derivative Instruments

Derivative financial instruments are used to manage exposure to commodity price risk. These risks are managed in part by entering into forward commodity transactions, including options, swaps and futures. To mitigate credit risk from counterparties in the event of nonperformance, master netting agreements are used whenever possible and counterparties may be required to pledge collateral depending on the creditworthiness of each counterparty and the risk associated with the transaction.

Commodity Price Risk

Commodity price risk represents the potential impact that can be caused by a change in the market value of a particular commodity. SCE's electricity price exposure arises from energy purchased from and sold to wholesale markets as a result of differences between SCE's load requirements and the amount of energy delivered from its generating facilities and PPAs. SCE's natural gas price exposure arises from natural gas purchased for the Mountainview power plant and peaker plants, Qualifying Facilities contracts where pricing is based on a monthly natural gas index and PPAs in which SCE has agreed to provide the natural gas needed for generation, referred to as tolling arrangements.

Credit and Default Risk

Credit and default risk represent the potential impact that can be caused if a counterparty were to default on its contractual obligations and SCE would be exposed to spot markets for buying replacement power or selling excess power. In addition, SCE would be exposed to the risk of non-payment of accounts receivable, primarily related to the sales of excess power and realized gains on derivative instruments.

Certain power and gas contracts contain master netting agreements or similar agreements, which generally allow counterparties subject to the agreement to offset amounts when certain criteria are met, such as in the event of default. The objective of netting is to reduce credit exposure. Additionally, to reduce SCE's risk exposures counterparties may be required to pledge collateral depending on the creditworthiness of each counterparty and the risk associated with the transaction.

Certain power and gas contracts contain a provision that requires SCE to maintain an investment grade rating from each of the major credit rating agencies, referred to as a credit-risk-related contingent feature. If SCE's credit rating were to fall below investment grade, SCE may be required to post additional collateral to cover derivative liabilities and the related outstanding payables. The net fair value of all derivative liabilities with these credit-risk-related contingent features were less than $1 million as of June 30, 2021 and December 31, 2020, for which SCE posted no collateral to its counterparties for its derivative liabilities and related outstanding payables for both periods. If the credit-risk-related contingent features underlying these agreements were triggered on June 30, 2021, SCE would be required to post $4 million of collateral, all of which is related to outstanding payables.

Fair Value of Derivative Instruments

SCE presents its derivative assets and liabilities on a net basis on its consolidated balance sheets when subject to master netting agreements or similar agreements. Derivative positions are also offset against margin and cash collateral deposits. In addition, SCE has provided collateral in the form of letters of credit. Collateral requirements can vary depending upon the level of unsecured credit extended by counterparties, changes in market prices relative to contractual commitments and other factors. See Note 4 for a discussion of fair value of derivative instruments. The following table summarizes the gross and net fair values of SCE's commodity derivative instruments:

June 30, 2021 Derivative Assets Derivative Liabilities (in millions) Short-Term1 Long-Term2 Subtotal Short-Term Long-Term Subtotal Net Assets Commodity derivative contracts Gross amounts recognized $ 115 $ 16 $ 131 $ 12 $ 4 $ 16 $ 115 Gross amounts offset in the consolidated balance sheets (12) (4) (16) (12) (4) (16) — Cash collateral posted3 (26) — (26) — — — (26) Net amounts presented in the consolidated balance sheets $ 77 $ 12 $ 89 $ — $ — $ — $ 89

December 31, 2020 Derivative Assets Derivative Liabilities (in millions) Short-Term1 Long-Term2 Subtotal Short-Term Long-Term Subtotal Net Assets Commodity derivative contracts Gross amounts recognized $ 103 $ 23 $ 126 $ 16 $ 6 $ 22 $ 104 Gross amounts offset in the consolidated balance sheets (12) (6) (18) (12) (6) (18) — Cash collateral posted3 — — — (4) — (4) 4 Net amounts presented in the consolidated balance sheets $ 91 $ 17 $ 108 $ — $ — $ — $ 108

1 Included in "Other current assets" on Edison International's and SCE's consolidated balance sheets.

2 Included in "Other long-term assets" on Edison International's and SCE's consolidated balance sheets.

3 At June 30, 2021, SCE received cash collateral of $30 million, of which $26 million was offset against net derivative assets and $4 million was reflected in "Other current liabilities" on the consolidated balance sheets. At December 31, 2020, SCE posted $17 million of cash, of which $4 million was offset against derivative liabilities and $13 million was reflected in "Other current assets" on the consolidated balance sheets.

Financial Statement Impact of Derivative Instruments

SCE recognizes realized gains and losses on derivative instruments as purchased power and fuel expense and expects that such gains or losses will be part of the purchased power costs recovered from customers. As a result, realized gains and losses do not affect earnings, but may temporarily affect cash flows. Due to expected future recovery from customers, unrealized gains and losses are recorded as regulatory assets and liabilities and therefore also do not affect earnings. The remaining effects of derivative activities and related regulatory offsets are reported in cash flows from operating activities in the consolidated statements of cash flows.

The following table summarizes the components of SCE's economic hedging activity:

Three months ended June 30, Six months ended June 30, (in millions) 2021 2020 2021 2020 Realized gains (losses) $ 15 $ (16) $ 127 $ (60) Unrealized gains (losses) 16 (31) 10 (114)

Notional Volumes of Derivative Instruments

The following table summarizes the notional volumes of derivatives used for SCE's economic hedging activities:

Unit of Economic Hedges Commodity Measure June 30, 2021 December 31, 2020 Electricity options, swaps and forwards GWh 647 1,581 Natural gas options, swaps and forwards Bcf 53 34 Congestion revenue rights GWh 29,285 41,151

Note 7. Revenue

SCE's revenue is disaggregated by two revenue sources:

● Earning activities – representing revenue authorized by the CPUC and FERC, which is intended to provide SCE a reasonable opportunity to recover its costs and earn a return on its net investment in generation, transmission and distribution assets. The annual revenue requirements are comprised of authorized operation and maintenance costs, depreciation, taxes and a return consistent with the capital structure. Also, included in earnings activities are revenue or penalties related to incentive mechanisms, other operating revenue, and regulatory charges or disallowances.

● Cost-recovery activities – representing CPUC- and FERC- authorized balancing accounts, which allow for recovery of specific project or program costs, subject to reasonableness review or compliance with upfront standards, as well as non-bypassable rates collected for SCE Recovery Funding LLC. Cost- recovery activities include rates which provide recovery, subject to reasonableness review of, among other things, fuel costs, purchased power costs, public purpose related-program costs (including energy efficiency and demand-side management programs), certain operation and maintenance expenses, and repayment of bonds and financing costs of SCE Recovery Funding LLC. SCE earns no return on these activities.

The following table is a summary of SCE's revenue:

Three months ended June 30, 2021 Three months ended June 30, 2020 Cost- Cost- Earning Recovery Total Earning Recovery Total (in millions) Activities Activities Consolidated Activities Activities Consolidated Revenues from contracts with customers1,2 $ 1,703 $ 1,423 $ 3,126 $ 1,658 $ 1,220 $ 2,878 Alternative revenue programs and other operating revenue3 127 53 180 117 (15) 102 Total operating revenue $ 1,830 $ 1,476 $ 3,306 $ 1,775 $ 1,205 $ 2,980

Six months ended June 30, 2021 Six months ended June 30, 2020 Cost- Cost- Earning Recovery Total Earning Recovery Total (in millions) Activities Activities Consolidated Activities Activities Consolidated Revenues from contracts with customers1,2 $ 3,407 $ 2,618 $ 6,025 $ 3,282 $ 1,938 $ 5,220 Alternative revenue programs and other operating revenue3 190 44 234 234 306 540 Total operating revenue $ 3,597 $ 2,662 $ 6,259 $ 3,516 $ 2,244 $ 5,760

1 SCE recorded CPUC revenue based on the 2020 authorized revenue requirements pending the receipt of a 2021 GRC Final Decision. For further information, see Note 1.

2 At June 30, 2021 and December 31, 2020, SCE's receivables related to contracts from customers were $2.1 billion and $1.5 billion, respectively, which include accrued unbilled revenue of $863 million and $521 million, respectively.

3 Includes differences between amounts billed and authorized levels for both the CPUC and FERC.

Subsequent Event

In July 2021, Morongo Transmission LLC ("Morongo") paid SCE $400 million for the use of a portion of the West of Devers transmission line transfer capability. Under the terms of the agreement with Morongo, SCE will provide Morongo with the use of a portion of the West of Devers transmission line transfer capability for a period of 30 years. After the 30-year contract term, the transfer capability will revert to SCE. SCE will amortize deferred revenues from the use of the transfer capability over the 30-year term.

Note 8. Income Taxes

Effective Tax Rate

The table below provides a reconciliation of income tax expense computed at the federal statutory income tax rate to the income tax provision:

Three months ended Six months ended June 30, June 30, (in millions) 2021 2020 2021 2020 Edison International: Income from operations before income taxes $ 429 $ 352 $ 683 $ 481 Provision for income tax at federal statutory rate of 21% 90 74 143 101 Increase (decrease) in income tax from: State tax, net of federal benefit 18 6 11 (7) Property-related (43) (69) (126) (147) Change related to uncertain tax position1 — — — (15) Other 3 (7) 4 (12) Total income tax expense (benefit) $ 68 $ 4 $ 32 $ (80) Effective tax rate 15.9 % 1.1 % 4.7 % (16.6)% SCE: Income from operations before income taxes $ 461 $ 437 $ 760 $ 611 Provision for income tax at federal statutory rate of 21% 97 92 160 129 Increase (decrease) in income tax from: State tax, net of federal benefit 19 11 15 (1) Property-related (43) (69) (126) (147) Change related to uncertain tax positions1 — (1) — (18) Other 3 (7) 3 (12) Total income tax expense (benefit) $ 76 $ 26 $ 52 $ (49) Effective tax rate 16.5 % 5.9 % 6.8 % (8.0)%

1 Primarily relates to the re-measurement of uncertain tax positions related to the 2010 – 2012 California state tax filings currently under audit.

The CPUC requires flow-through ratemaking treatment for the current tax benefit arising from certain property- related and other temporary differences which reverse over time. Flow-through items reduce current authorized revenue requirements in SCE's rate cases and result in a regulatory asset for recovery of deferred income taxes in future periods. The difference between the authorized amounts as determined in SCE's rate cases, adjusted for balancing and memorandum account activities, and the recorded flow-through items also result in increases or decreases in regulatory assets with a corresponding impact on the effective tax rate to the extent that recorded deferred amounts are expected to be recovered in future rates. For further information, see Note 11.

Tax Disputes

Tax years that remain open for examination by the IRS and the California Franchise Tax Board ("FTB") are 2016 – 2019 and 2013 – 2019, respectively.

Tax years 2007 – 2012 are currently subject to a settlement proceeding with the FTB which is expected to be finalized within the next twelve months. Edison International anticipates incremental cash and earnings benefits resulting from the settlement. Once final, Edison International will update its assessment of uncertain tax positions for all years to reflect the settlement.

Note 9. Compensation and Benefit Plans

Pension Plans

Net periodic pension expense components are:

Three months ended Six months ended June 30, June 30, (in millions) 2021 2020 2021 2020 Edison International: Service cost $ 34 $ 31 $ 68 $ 62 Non-service cost (benefit) Interest cost 26 30 52 61 Expected return on plan assets (56) (54) (112) (108) Amortization of prior service cost — 1 — 1 Amortization of net loss1 3 3 6 6 Regulatory adjustment 4 2 8 4 Total non-service benefit2 $ (23) $ (18) $ (46) $ (36) Total expense recognized $ 11 $ 13 $ 22 $ 26 SCE: Service cost $ 33 $ 30 $ 66 $ 60 Non-service cost (benefit) Interest cost 24 28 48 56 Expected return on plan assets (53) (51) (106) (102) Amortization of prior service cost — 1 — 1 Amortization of net loss1 2 2 4 4 Regulatory adjustment 4 2 8 4 Total non-service benefit2 $ (23) $ (18) $ (46) $ (37) Total expense recognized $ 10 $ 12 $ 20 $ 23

1 Represents the amount of net loss reclassified from other comprehensive loss.

2 Included in "Other income" on Edison International's and SCE's consolidated statement of income.

Postretirement Benefits Other Than Pensions ("PBOP")

Net periodic PBOP expense components for Edison International and SCE are:

Three months ended Six months ended June 30, June 30, (in millions) 2021 2020 2021 2020 Service cost $ 10 $ 9 $ 20 $ 18 Non-service cost (benefit) Interest cost 14 17 28 34 Expected return on plan assets (27) (30) (54) (60) Amortization of net gain (8) (4) (16) (8) Regulatory adjustment 11 8 22 16 Total non-service benefit1 $ (10) $ (9) $ (20) $ (18) Total expense $ — $ — $ — $ —

1 Included in "Other income" on Edison International's and SCE's consolidated statement of income.

Note 10.Investments

Nuclear Decommissioning Trusts

Future decommissioning costs related to SCE's nuclear assets are expected to be funded from independent decommissioning trusts.

The following table sets forth amortized cost and fair value of the trust investments (see Note 4 for a discussion of fair value of the trust investments):

Amortized Cost Fair Value Longest June 30, December 31, June 30, December 31, (in millions) Maturity Dates 2021 2020 2021 2020 Stocks — N/A N/A $ 1,905 $ 1,908 Municipal bonds 2054 $ 896 $ 1,013 1,070 1,218 U.S. government and agency securities 2067 942 740 1,048 864 Corporate bonds 2070 442 460 518 550 Short-term investments and receivables/ payables1 One-year 331 281 345 293 Total $ 2,611 $ 2,494 $ 4,886 $ 4,833

1 Short-term investments include $52 million and $138 million of repurchase agreements payable by financial institutions which earn interest, are fully secured by U.S. Treasury securities and mature by July 1, 2021 and January 4, 2021 as of June 30, 2021 and December 31, 2020, respectively.

Trust fund earnings (based on specific identification) increase the trust fund balance and the asset retirement obligation ("ARO") regulatory liability. Unrealized holding gains, net of losses, were $2.0 billion and $2.1 billion at June 30, 2021 and December 31, 2020, respectively.

Trust assets are used to pay income taxes arising from trust investing activity. Deferred tax liabilities related to net unrealized gains were $491 million and $515 million at June 30, 2021 and December 31, 2020, respectively. Accordingly, the fair value of trust assets available to pay future decommissioning costs, net of deferred income taxes, totaled $4.4 billion and $4.3 billion at June 30, 2021 and December 31, 2020, respectively.

The following table summarizes the gains and losses for the trust investments:

Three months ended Six months ended June 30, June 30, (in millions) 2021 2020 2021 2020 Gross realized gains $ 140 $ 75 $ 251 $ 114 Gross realized losses (4) (1) (16) (3) Net unrealized gains (losses) for equity securities 16 271 34 (105)

Due to regulatory mechanisms, changes in assets of the trusts from income or loss items have no impact on operating revenue or earnings.

Edison International's Investments

Edison International holds strategic investments in companies focused on developing electric technologies and services. In June 2021, one of the investments, Proterra, became publicly traded on the NASDAQ under ticker symbol PTRA. The transaction led to a recognition of an unrealized pre-tax gain of $12 million ($9 million after-tax) during the three-months ended June 30, 2021, which is reflected as "Other income" on the

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document consolidated statements of income. As of June 30, 2021, the Proterra investment is measured at fair value of $21 million. For further information, see Note 4.

Note 11. Regulatory Assets and Liabilities

Regulatory Assets

SCE's regulatory assets included on the consolidated balance sheets are:

June 30, December 31, (in millions) 2021 2020 Current: Regulatory balancing and memorandum accounts $ 1,606 $ 1,127 Power contracts 166 165 Other 23 22 Total current 1,795 1,314 Long-term: Deferred income taxes, net of liabilities 4,570 4,475 Pension and other postretirement benefits 4 12 Power contracts 195 239 Unamortized investments, net of accumulated amortization 110 114 Unamortized loss on reacquired debt 127 133 Regulatory balancing and memorandum accounts 2,096 1,794 Environmental remediation 247 247 Recovery assets1 329 — Other 132 106 Total long-term 7,810 7,120 Total regulatory assets $ 9,605 $ 8,434

1 Represents the balance associated with the AB 1054 Excluded Capital Expenditures related Recovery Properties and prudently incurred financing costs securitized in 2021 with issuance of the associated bond. The recovery period is until 2043, when the bonds and interest are paid in full. For further details, see Note 3.

Regulatory Liabilities

SCE's regulatory liabilities included on the consolidated balance sheets are:

June 30, December 31, (in millions) 2021 2020 Current: Regulatory balancing and memorandum accounts $ 378 $ 471 Energy derivatives 103 87 Other 11 11 Total current 492 569 Long-term: Cost of removal 2,735 2,595 Re-measurement of deferred taxes 2,229 2,283 Recoveries in excess of ARO liabilities1 2,002 1,930 Regulatory balancing and memorandum accounts 1,274 1,062 Other postretirement benefits 676 671 Other 44 48 Total long-term 8,960 8,589 Total regulatory liabilities $ 9,452 $ 9,158

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document 1 Represents the cumulative differences between ARO expenses and amounts collected in rates primarily for the decommissioning of SCE's nuclear generation facilities. Decommissioning costs recovered through rates are primarily placed in nuclear decommissioning trusts. This regulatory liability also represents the deferral of realized and unrealized gains and losses on the nuclear decommissioning trust investments. See Note 10 for further discussion.

Net Regulatory Balancing and Memorandum Accounts

The following table summarizes the significant components of regulatory balancing and memorandum accounts included in the above tables of regulatory assets and liabilities:

June 30, December 31, (in millions) 2021 2020 Asset (liability) Energy resource recovery account $ (95) $ (89) Portfolio allocation balancing account 543 497 New system generation balancing account (28) (10) Public purpose programs and energy efficiency programs (1,137) (1,130) Base revenue requirement balancing account 665 622 Greenhouse gas auction revenue and low carbon fuel standard revenue (109) (125) FERC balancing accounts 32 12 Wildfire and drought restoration accounts1 396 361 Wildfire-related memorandum accounts2 1,404 1,104 COVID-19-related memorandum accounts 78 176 Customer service re-platform memorandum account3 61 30 Residential uncollectibles balancing account4 157 — Other 83 (60) Asset $ 2,050 $ 1,388

1 The wildfire and drought restoration accounts regulatory assets represent restoration costs that are recorded in a Catastrophic Event Memorandum Account ("CEMA"). In July 2021, the CPUC issued a proposed decision which, if adopted, would deny without prejudice SCE's application to recover all restoration costs related to six 2017 wildfires. This could lead to $8 million of currently deferred regulatory assets being expensed.

2 The wildfire-related memorandum accounts regulatory assets represent wildfire-related costs that are probable of future recovery from customers, subject to a reasonableness review. The Fire Hazard Prevention Memorandum Account ("FHPMA") is used to track costs related to fire safety and to implement fire prevention corrective action measures in extreme and very high fire threat areas. The Wildfire Expense Memorandum Account ("WEMA") is used to track incremental wildfire insurance costs and uninsured wildfire-related financing, legal and claims costs. During 2019, the CPUC approved a Wildfire Mitigation Plan memorandum account to track costs incurred to implement SCE's Wildfire Mitigation Plan that are not currently reflected in SCE's revenue requirements, a Grid Safety and Resiliency Program Memorandum Account ("GSRPMA") to track the costs of SCE's GS&RP that are incremental to costs approved for recovery in SCE's 2018 GRC and a fire risk mitigation memorandum account to track costs related to the reduction of fire risk that are incremental to costs approved for recovery in SCE's 2018 GRC that are not tracked in any other wildfire-related memorandum account.

3 CSRP memorandum account was established in the 2018 GRC to track costs for implementation of a new customer service system not currently reflected in SCE's revenue requirements.

4 In November 2020, the CPUC approved the establishment of the residential uncollectibles balancing account ("RUBA"), to track the difference (positive or negative) between the recorded uncollectibles expense for all customer groups and the total authorized uncollectibles revenue collected from all customers subject to a cap equal to the actual recorded uncollectibles expense for residential customers.

Note 12. Commitments and Contingencies

Indemnities

Edison International and SCE have various financial and performance guarantees and indemnity agreements which are issued in the normal course of business.

Edison International and SCE have agreed to provide indemnifications through contracts entered into in the normal course of business. These are primarily indemnifications against adverse litigation outcomes in connection with underwriting agreements, indemnities for specified environmental liabilities and income taxes with respect to assets sold or other contractual arrangements. Edison International's and SCE's obligations under these agreements may or may not be limited in terms of time and/or amount, and in some instances Edison International and SCE may have recourse against third parties. Edison International and SCE have not recorded a liability related to these indemnities. The overall maximum amount of the obligations under these indemnifications cannot be reasonably estimated.

Contingencies

In addition to the matters disclosed in these Notes, Edison International and SCE are involved in other legal, tax, and regulatory proceedings before various courts and governmental agencies regarding matters arising in the ordinary course of business. Edison International and SCE believe the outcome of each of these other proceedings will not materially affect its financial position, results of operations and cash flows.

Southern California Wildfires and Mudslides

Wildfires in SCE's territory, including those where SCE's equipment may be alleged to be associated with the fire's ignition, have caused loss of life and substantial damage in recent years. Multiple factors have contributed to increased wildfire activity and faster progression of wildfires across SCE's service territory and in other areas of California. These include the buildup of dry vegetation in areas severely impacted by years of historic drought, lack of adequate clearing of hazardous fuels by responsible parties, higher temperatures, lower humidity, increased incidence of dry lightning, and strong Santa Ana winds. At the same time that wildfire risk has been increasing in Southern California, residential and commercial development has occurred and is occurring in some of the highest-risk areas. Such factors can increase the likelihood and extent of wildfires. SCE has determined that approximately 27% of its service territory is in areas identified as high fire risk.

California has experienced unprecedented weather conditions in recent years and SCE's service territory remains susceptible to additional wildfire activity in 2021 and beyond. The worsening conditions across California increase the likelihood of wildfires, including those where SCE's equipment may be alleged to be associated with the fire's ignition. In response to worsening weather and fuel conditions and increased wildfire activity over the past several years, SCE has developed and is implementing its 2020 – 2022 Wildfire Mitigation Plan ("WMP") to reduce the risk of SCE equipment contributing to the ignition of wildfires. In addition, California has increased its investment in wildfire prevention and fire suppression capabilities.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document penalties, claims for damages and reputational harm if SCE does not execute PSPS in compliance with applicable rules and regulations or if it is determined that SCE has placed excessive or unreasonable reliance on PSPS. In June 2021, the CPUC

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Table of Contents issued a final decision which, among other things, will reduce future authorized revenue for the volumetric reductions in electricity sales resulting from PSPS events initiated after June 2021 until the CPUC determines that improvements in the PSPS program have been made.

Edison International and SCE have incurred material losses in connection with the 2017/2018 Wildfire/ Mudslide Events, which are described below. SCE's equipment has been, and may further be, alleged to be associated with several wildfires that have originated in Southern California subsequent to 2018. Edison International and SCE expect that any losses incurred in connection with those fires will be covered by insurance, subject to self-insured retentions and co-insurance, and expect that any such losses after insurance recoveries will not be material.

Liability Overview

The extent of liability for wildfire-related damages in actions against utilities depends on a number of factors, including whether the utility substantially caused or contributed to the damages and whether parties seeking recovery of damages will be required to show negligence in addition to causation. California courts have previously found utilities to be strictly liable for property damage along with associated interest and attorneys' fees, regardless of fault, by applying the theory of inverse condemnation when a utility's facilities were determined to be a substantial cause of a wildfire that caused the property damage. If inverse condemnation is held to be inapplicable to SCE in connection with a wildfire, SCE still could be held liable for property damages and associated interest if the property damages were found to have been proximately caused by SCE's negligence. If SCE were to be found negligent, SCE could also be held liable for, among other things, fire suppression costs, business interruption losses, evacuation costs, clean-up costs, medical expenses, and personal injury/wrongful death claims. Additionally, SCE could potentially be subject to fines and penalties for alleged violations of CPUC rules and state laws in connection with the ignition of a wildfire.

Final determinations of liability for wildfire events, including determinations of whether SCE was negligent, would only be made during lengthy and complex litigation processes. Even when investigations are still pending or liability is disputed, an assessment of likely outcomes, including through future settlement of disputed claims, may require estimated losses to be accrued under accounting standards. Each reporting period, management reviews its loss estimates for remaining alleged and potential claims related to wildfire events. The process for estimating losses associated with alleged and potential wildfire related claims requires management to exercise significant judgment based on a number of assumptions and subjective factors, including, but not limited to: estimates of known and expected claims by third parties based on currently available information, opinions of counsel regarding litigation risk, the status of and developments in the course of litigation, and prior experience litigating and settling wildfire litigation claims. As additional information becomes available, management's estimates and assumptions regarding the causes and financial impact of wildfire events may change.

2019/2020 Wildfires

Several wildfires significantly impacted portions of SCE's service territory in 2019 and 2020 (the wildfires that originated in Southern California in 2019 and 2020 where SCE's equipment may be alleged to be associated with the fire's ignition are referred to collectively as the "2019/2020 Wildfires"). Edison International and SCE expect that any losses incurred in connection with the 2019/2020 Wildfires will be covered by insurance, subject to self-insured retentions and co-insurance, and expect that any such losses after insurance recoveries will not be material. As of June 30, 2021, Edison International and SCE had estimated losses (established at the lower end of the reasonably estimated range of expected losses) of $118 million, and expected recoveries from insurance of $75 million, reflected on their consolidated balance sheets related to the 2019/2020 Wildfires.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document is being led by the Los Angeles Fire Department. Based on pending litigation and without considering insurance recoveries, it is reasonably possible that SCE will

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Table of Contents incur a material loss in connection with the Saddle Ridge Fire, but the range of possible losses that could be incurred cannot be estimated at this time. SCE has not accrued a charge for potential losses relating to the Saddle Ridge Fire.

Another of the 2019/2020 Wildfires, the "Bobcat Fire" was reported in the vicinity of Cogswell Dam in Los Angeles County, California in September 2020. The United States Forest Service ("USFS") has reported that the Bobcat Fire burned approximately 116,000 acres in Los Angeles County, destroyed an estimated 87 homes, 1 commercial property and 83 minor structures, damaged an estimated 28 homes and 19 minor structures, and resulted in injuries to 6 firefighters. In addition, the USFS has estimated suppression costs at $80 million. A camera in the vicinity of Cogswell Dam captured the initial stages of a fire with the first observed smoke approximately six minutes before an SCE circuit in the area experienced an anomaly (a relay). An investigation into the cause of the Bobcat Fire is being led by the USFS, and the USFS has taken a specific section of an SCE overhead conductor in the vicinity of Cogswell Dam into possession as part of its investigation. SCE understands that the USFS has also taken three tree branches in the area into possession. The SED is also conducting an investigation of the Bobcat Fire. SCE has accrued a charge for potential losses relating to the Bobcat Fire. The accrued charge corresponds to the lower end of the reasonably estimated range of expected losses that may be incurred in connection with the Bobcat Fire and is subject to change as additional information becomes available.

2017/2018 Wildfire/Mudslide Events

Wildfires in SCE's territory in December 2017 and November 2018 caused loss of life, substantial damage to both residential and business properties, and service outages for SCE customers. The investigating government agencies, the Ventura County Fire Department ("VCFD") and California Department of Forestry and Fire Protection ("CAL FIRE"), have determined that the largest of the 2017 fires in SCE's territory originated on December 4, 2017, in the Anlauf Canyon area of Ventura County (the investigating agencies refer to this fire as the "Thomas Fire"), followed shortly thereafter by a second fire that originated near Koenigstein Road in the City of Santa Paula (the "Koenigstein Fire"). The December 4, 2017 fires eventually burned substantial acreage in both Ventura and Santa Barbara Counties. According to CAL FIRE, the Thomas and Koenigstein Fires, collectively, burned over 280,000 acres, destroyed or damaged an estimated 1,343 structures and resulted in two confirmed fatalities. The largest of the November 2018 fires in SCE's territory, known as the "Woolsey Fire," originated in Ventura County and burned acreage in both Ventura and Los Angeles Counties. According to CAL FIRE, the Woolsey Fire burned almost 100,000 acres, destroyed an estimated 1,643 structures, damaged an estimated 364 structures and resulted in three confirmed fatalities. Two additional fatalities have been associated with the Woolsey Fire. The Thomas Fire, the Koenigstein Fire, the Montecito Mudslides (defined below) and the Woolsey Fire are each referred to as a "2017/2018 Wildfire/Mudslide Event," and, collectively, referred to as the "2017/2018 Wildfire/Mudslide Events."

As described below, multiple lawsuits related to the Thomas and Koenigstein Fires and the Woolsey Fire have been initiated against SCE and Edison International. Some of the Thomas and Koenigstein Fires lawsuits claim that SCE and Edison International have responsibility for the damages caused by debris flows and flooding in Montecito and surrounding areas in January 2018 (the "Montecito Mudslides") based on a theory alleging that SCE has responsibility for the Thomas and/or Koenigstein Fires and further alleging that the Thomas and/or Koenigstein Fires proximately caused the Montecito Mudslides. According to Santa Barbara County initial reports, the Montecito Mudslides destroyed an estimated 135 structures, damaged an estimated 324 structures, and resulted in 21 confirmed fatalities, with two additional fatalities presumed. Based on information available to SCE and consideration of the risks associated with litigation, Edison International and SCE expect to incur a material loss in connection with the remaining alleged and potential claims related to the 2017/2018 Wildfire/ Mudslide Events. The 2017/2018 Wildfire/Mudslide Events are discussed further below.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document As of June 30, 2021, Edison International and SCE had paid $4.7 billion in settlements, had $141 million to be paid under executed settlements and had $1.4 billion of estimated losses for remaining alleged and potential claims reflected on their consolidated balance sheets related to the 2017/2018 Wildfire/Mudslide Events. As of the same date, Edison International and SCE had assets for expected recoveries through FERC electric rates of $94 million on their consolidated balance sheets and had exhausted expected insurance recoveries related to the 2017/2018 Wildfire/Mudslide Events. The estimated losses

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Table of Contents for the 2017/2018 Wildfire/Mudslide Events do not include an estimate of any potential fines or penalties that could be levied against SCE in connection with the 2017/2018 Wildfire/Mudslide Events. Edison International and SCE are currently unable to reasonably estimate the magnitude of any such fines or penalties, or the associated timing if they were to be imposed. Estimated losses for the 2017/2018 Wildfire/Mudslide Events litigation are based on a number of assumptions and are subject to change as additional information becomes available. Actual losses incurred may be higher or lower than estimated based on several factors, including: the uncertainty as to the legal and factual determinations to be made during litigation, including uncertainty as to the contributing causes of the 2017/2018 Wildfire/Mudslide Events, the complexities associated with fires that merge, whether inverse condemnation will be held applicable to SCE with respect to damages caused by the Montecito Mudslides, uncertainties related to the litigation processes, the uncertainty in estimating damages that may be alleged, and the uncertainty as to how these factors impact future settlements.

The CPUC and FERC may not allow SCE to recover uninsured losses through electric rates if it is determined that such losses were not reasonably or prudently incurred. See "Loss Estimates for Third Party Claims and Potential Recoveries from Insurance and through Electric Rates" below for additional information.

External Investigations and Internal Review

The VCFD and CAL FIRE have jointly issued reports concerning their findings regarding the causes of the Thomas Fire and the Koenigstein Fire. The reports did not address the causes of the Montecito Mudslides. SCE has also received a non-final redacted draft of a report from the VCFD regarding Woolsey Fire (the "Redacted Woolsey Report"). SCE anticipates that the VCFD will release its final report regarding the Woolsey Fire in 2021. The VCFD and CAL FIRE findings do not determine legal causation of or assign legal liability for the Thomas, Koenigstein or Woolsey Fires; final determinations of legal causation and liability would only be made during lengthy and complex litigation.

SCE could be subject to material fines, penalties, or restitution for failure to comply with applicable laws and regulations.

The CPUC's Safety and Enforcement Division ("SED") has conducted investigations to assess SCE's compliance with applicable rules and regulations in areas impacted by the Thomas, Koenigstein and Woolsey Fires. The CPUC may initiate proceedings to investigate these matters and SCE could be subject to material fines or penalties in connection with any such proceeding that is initiated.

Edison International and SCE understand that the California Attorney General's Office has completed its investigation of the Thomas Fire without pursuing criminal charges. Edison International and SCE are aware of an ongoing investigation by the California Attorney General's Office of the Woolsey Fire for the purpose of determining whether any criminal violations have occurred. SCE is not aware of any basis for felony liability with regards to the Thomas Fire, the Koenigstein Fire or the Woolsey Fire.

SCE's internal review into the facts and circumstances of each of the 2017/2018 Wildfire/Mudslide Events is complex and time consuming. SCE expects to obtain and review additional information and materials in the possession of third parties during the course of its internal reviews and the litigation processes.

Thomas Fire

On March 13, 2019, the VCFD and CAL FIRE jointly issued a report concluding, after ruling out other possible causes, that the Thomas Fire was started by SCE power lines coming into contact during high winds, resulting in molten metal falling to the ground. However, the report does not state that their investigation found molten metal on the ground. At this time, based on available information, SCE has not determined whether its equipment caused the Thomas Fire. Based on publicly available radar data showing a smoke plume in the Anlauf Canyon area emerging in advance of the report's indicated start time, SCE believes that the Thomas Fire started at least 12 minutes prior to any issue involving SCE's system and at least 15 minutes prior to the start

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document time indicated in the report. SCE is continuing to assess the extent of damages that may be attributable to the Thomas Fire.

Koenigstein Fire

On March 20, 2019, the VCFD and CAL FIRE jointly issued a report finding that the Koenigstein Fire was caused when an energized SCE electrical wire separated and fell to the ground along with molten metal particles and ignited the dry vegetation below. As previously disclosed, SCE believes that its equipment was associated with the ignition of the Koenigstein Fire. SCE is continuing to assess the extent of damages that may be attributable to the Koenigstein Fire.

Montecito Mudslides

SCE's internal review includes inquiry into whether the Thomas and/or Koenigstein Fires proximately caused or contributed to the Montecito Mudslides, whether, and to what extent, the Thomas and/or Koenigstein Fires were responsible for the damages in the Montecito area and other factors that potentially contributed to the losses that resulted from the Montecito Mudslides. Many other factors, including, but not limited to, weather conditions and insufficiently or improperly designed and maintained debris basins, roads, bridges and other channel crossings, could have proximately caused, contributed to or exacerbated the losses that resulted from the Montecito Mudslides.

At this time, based on available information, SCE has not been able to determine whether the Thomas Fire or the Koenigstein Fire, or both, were responsible for the damages in the Montecito area. In the event that SCE is determined to have caused the fire that spread to the Montecito area, SCE cannot predict whether, if fully litigated, the courts would conclude that the Montecito Mudslides were caused or contributed to by the Thomas and/or Koenigstein Fires or that SCE would be liable for some or all of the damages caused by the Montecito Mudslides.

Woolsey Fire

SCE's internal review into the facts and circumstances of the Woolsey Fire is ongoing. SCE has reported to the CPUC that there was an outage on SCE's electric system in the vicinity of where the Woolsey Fire reportedly began on November 8, 2018. SCE is aware of witnesses who saw fire in the vicinity of SCE's equipment at the time the fire was first reported. While SCE did not find evidence of downed electrical wires on the ground in the suspected area of origin, it observed a pole support wire in proximity to an electrical wire that was energized prior to the outage.

The Redacted Woolsey Report states that the VCFD investigation team determined that electrical equipment owned and operated by SCE was the cause of the Woolsey Fire. Absent additional evidence, SCE believes that it is likely that its equipment was associated with the ignition of the Woolsey Fire. SCE expects to obtain and review additional information and materials in the possession of CAL FIRE and others during the course of its internal review and the Woolsey Fire litigation process, including SCE equipment that has been retained by CAL FIRE.

Litigation

Multiple lawsuits related to the 2017/2018 Wildfire/Mudslide Events naming SCE as a defendant have been filed by three categories of plaintiffs: individual plaintiffs, subrogation plaintiffs and public entity plaintiffs. A number of the lawsuits also name Edison International as a defendant and some of the lawsuits were filed as purported class actions. Because potential plaintiffs can still timely file claims related to the 2017/2018 Wildfire/Mudslide Events, SCE expects to be the subject of additional lawsuits related to the events. The litigation could take a number of years to be resolved because of the complexity of the matters and number of plaintiffs.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document control of SCE. At least four of the lawsuits were filed as purported class actions. The lawsuits, which have been filed in the superior courts of Ventura, Santa Barbara and Los Angeles Counties allege, among other things, negligence, inverse condemnation, trespass, private nuisance, and violations of the public utilities and health and safety codes. An initial trial for a limited number of plaintiffs, sometimes

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Table of Contents referred to as a bellwether trial, on certain fire only matters is currently scheduled for October 18, 2021. The bellwether trial date may be further delayed to provide SCE and certain of the individual plaintiffs in the Thomas and Koenigstein Fire litigation the opportunity to pursue settlements of claims under a program adopted to promote an efficient and orderly settlement process. Some individual plaintiffs have, and others may, opt to pursue trial outside of the settlement program.

Seventy of the 278 pending lawsuits mentioned in the paragraph above allege that SCE has responsibility for the Thomas and/or Koenigstein Fires and that the Thomas and/or Koenigstein Fires proximately caused the Montecito Mudslides, resulting in the plaintiffs' claimed damages. Forty-Four of the 70 Montecito Mudslides lawsuits also name Edison International as a defendant based on its ownership and alleged control of SCE. In addition to other causes of action, some of the Montecito Mudslides lawsuits also allege personal injury and wrongful death. A bellwether jury trial previously scheduled for October 12, 2020 was vacated due to the wide- spread disruption being caused by the COVID-19 pandemic.

As of July 22, 2021, SCE was aware of at least 334 currently pending lawsuits, representing approximately 6,000 plaintiffs, related to the Woolsey Fire naming SCE as a defendant. One hundred forty of the 334 lawsuits also name Edison International as a defendant based on its ownership and alleged control of SCE. At least two of the lawsuits were filed as purported class actions. The lawsuits, which have been filed in the superior courts of Ventura and Los Angeles Counties allege, among other things, negligence, inverse condemnation, personal injury, wrongful death, trespass, private nuisance, and violations of the public utilities and health and safety codes. A bellwether jury trial is currently scheduled for October 26, 2021. The bellwether trial date may be further delayed to provide SCE and certain of the individual plaintiffs in the Woolsey Fire litigation the opportunity to pursue settlements of claims under a program adopted to promote an efficient and orderly settlement process. Some individual plaintiffs may opt to pursue trial outside of the settlement program.

The Thomas and Koenigstein Fires and Montecito Mudslides lawsuits are being coordinated in the Los Angeles Superior Court. The Woolsey Fire lawsuits have also been coordinated in the Los Angeles Superior Court. On October 4, 2018, the Superior Court denied Edison International's and SCE's challenge to the application of inverse condemnation to SCE with respect to the Thomas and Koenigstein Fires and, on February 26, 2019, the California Supreme Court denied SCE's petition to review the Superior Court's decision. In January 2019, SCE filed a cross-complaint against certain local public entities alleging that failures by these entities, such as failure to adequately plan for flood hazards and build and maintain adequate debris basins, roads, bridges and other channel crossings, among other things, caused, contributed to or exacerbated the losses that resulted from the Montecito Mudslides. These cross-claims in the Montecito Mudslides litigation were not released as part of the Local Public Entity Settlements (as defined below).

Additionally, in September 2018, a derivative lawsuit for breach of fiduciary duties and unjust enrichment was filed in the Los Angeles Superior Court against certain current and former members of the Boards of Directors of Edison International and SCE. Edison International and SCE are identified as nominal defendants in the action. The derivative lawsuit generally alleges that the individual defendants violated their fiduciary duties by causing or allowing SCE to operate in an unsafe manner in violation of relevant regulations, resulting in substantial liability and damage from the Thomas and Koenigstein Fires and the Montecito Mudslides. The lawsuit is currently stayed.

In November 2018, a purported class action lawsuit alleging securities fraud and related claims was filed in federal court against Edison International, SCE and certain current and former officers of Edison International and SCE. The plaintiff alleges that Edison International and SCE made false and/or misleading statements in filings with the Securities and Exchange Commission by failing to disclose that SCE had allegedly failed to maintain its electric transmission and distribution networks in compliance with safety regulations, and that those alleged safety violations led to fires that occurred in 2017 and 2018, including the Thomas Fire and the Woolsey

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Fire. In April 2021, the court granted a motion to dismiss the lawsuit. The plaintiff has appealed the dismissal to the United States Court of Appeals for the Ninth Circuit.

SCE are named as nominal defendants in those actions. The derivative lawsuits generally allege that the individual defendants breached their fiduciary duties and made misleading statements or allowed misleading statements to be made (i) between March 21, 2014 and August 10, 2015, with respect to certain ex parte communications between SCE and CPUC decisionmakers concerning the settlement of the San Onofre Order Instituting Investigation proceeding (the "San Onofre OII") and (ii) from February 23, 2016 to the present, concerning compliance with applicable laws and regulations concerning electric system maintenance and operations related to wildfire risks. The lawsuits generally allege that these breaches of duty and misstatements led to substantial liability and damage resulting from the disclosure of SCE's ex parte communications in connection with the San Onofre OII settlement, and from the 2017/2018 Wildfire/Mudslide Events. The lawsuits are currently stayed.

Settlements

In the fourth quarter of 2019, SCE paid $360 million to a number of local public entities to resolve those parties' collective claims arising from the 2017/2018 Wildfire/Mudslide Events (the "Local Public Entity Settlements").

In the third quarter of 2020, Edison International and SCE entered into an agreement (the "TKM Subrogation Settlement") under which all of the insurance subrogation plaintiffs' in the Thomas Fire, Koenigstein Fire and Montecito Mudslides litigation (the "TKM Subrogation Plaintiffs") collective claims arising from the Thomas Fire, Koenigstein Fire or Montecito Mudslides have been resolved. Under the TKM Subrogation Settlement, SCE paid the TKM Subrogation Plaintiffs an aggregate of $1.2 billion in October 2020 and also agreed to pay $0.555 for each dollar in claims to be paid by the TKM Subrogation Plaintiffs to their policy holders on or before July 15, 2023, up to an agreed upon cap.

In January 2021, Edison International and SCE entered into an agreement (the "Woolsey Subrogation Settlement") under which all of the insurance subrogation plaintiffs' in the Woolsey Fire litigation (the "Woolsey Subrogation Plaintiffs") collective claims arising from the Woolsey Fire have been resolved. Under the Woolsey Subrogation Settlement, SCE paid the Woolsey Subrogation Plaintiffs an aggregate of $2.2 billion in March and April 2021. SCE has also agreed to pay $0.67 for each dollar in claims to be paid by the Woolsey Subrogation Plaintiffs to their policy holders on or before July 15, 2023, up to an agreed upon cap.

As of June 30, 2021, SCE has also entered into settlements with approximately 3,000 individual plaintiffs in the 2017/2018 Wildfire/Mudslide Events litigation. In 2020, SCE entered into settlements with individual plaintiffs in the 2017/2018 Wildfire/Mudslide Events litigation under which it agreed to pay an aggregate of approximately $300 million to those individual plaintiffs. Between December 31, 2020 and June 30, 2021, SCE also entered into settlements with individual plaintiffs in the 2017/2018 Wildfire/Mudslide Events litigation under which it agreed to pay an aggregate of approximately $750 million to those individual plaintiffs.

Edison International and SCE did not admit wrongdoing or liability as part of any of the settlements described above. Other claims and potential claims related to the 2017/2018 Wildfire/Mudslide Events remain.

SCE continues to explore reasonable settlement opportunities with other plaintiffs in the outstanding 2017/2018 Wildfire/Mudslide Events litigation.

Loss Estimates for Third Party Claims and Potential Recoveries from Insurance and through Electric Rates

At June 30, 2021 and December 31, 2020, Edison International's and SCE's consolidated balance sheets include fixed payments to be made under executed settlement agreements and accrued estimated losses of $1.5 billion and $4.4 billion, respectively, for the 2017/2018 Wildfire/Mudslide Events. The following table presents changes in estimated losses since December 31, 2020:

(in millions) Balance at December 31, 20201 $ 4,383 Amounts paid (2,852) Balance at June 30, 20212 $ 1,531

1 At December 31, 2020, $2,231 million in current liabilities, wildfire-related claims, on Edison International's and SCE's consolidated balance sheets includes an estimate for claims brought by insurance subrogation plaintiffs in the Woolsey Fire litigation, which were settled on January 22, 2021 for $2,212 million, and $19 million of other settlements executed in connection with the 2017/2018 Wildfire/Mudslide Events. At December 31, 2020, the $2,281 million included in deferred credits and other liabilities, wildfire-related claims, on Edison International's and SCE's consolidated balance sheets includes Edison International and SCE's best estimate of expected losses for remaining alleged and potential claims related to the 2017/2018 Wildfire/Mudslide Events after giving effect to the Woolsey Subrogation Settlement of $2,152 million and other wildfire-related claims estimates of $129 million.

2 At June 30, 2021, $141 million in current liabilities, wildfire-related claims, on Edison International's and SCE's consolidated balance sheets consists of settlements executed in connection with the 2017/2018 Wildfire/Mudslide Events. At June 30, 2021, the $1,519 million included in deferred credits and other liabilities, wildfire-related claims, on Edison International's and SCE's consolidated balance sheets includes Edison International and SCE's best estimate of expected losses for remaining alleged and potential claims related to the 2017/2018 Wildfire/Mudslide Events of $1,390 million and other wildfire-related claims estimates of $129 million.

For events that occurred in 2017 and early 2018, principally the Thomas and Koenigstein Fires and Montecito Mudslides, SCE had $1.0 billion of wildfire-specific insurance coverage, subject to a self-insured retention of $10 million per occurrence. For the Woolsey Fire, SCE had an additional $1.0 billion of wildfire-specific insurance coverage, subject to a self-insured retention of $10 million per occurrence. Edison International and SCE record a receivable for insurance recoveries when recovery of a recorded loss is determined to be probable. The following table presents changes in expected insurance recoveries associated with the estimated losses for the 2017/2018 Wildfire/Mudslide Events since December 31, 2020:

(in millions) Balance at December 31, 2020 $ 708 Insurance recoveries (708) Balance at June 30, 2021 $ —

In total, through June 30, 2021, SCE has accrued estimated losses of $6.2 billion, has paid or agreed to pay approximately $4.8 billion in settlements and has recovered $2.0 billion from its insurance carriers in relation to the 2017/2018 Wildfire/Mudslide Events.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document recovery for uninsured wildfire-related costs is SDG&E's requests for cost recovery related to 2007 wildfire activity, where the FERC allowed recovery of all FERC-jurisdictional wildfire-related costs while the CPUC rejected recovery of all CPUC-jurisdictional wildfire-related costs based on a determination that SDG&E did not meet the CPUC's prudency standard. As a result, while SCE does not agree with the CPUC's decision, it believes that

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Table of Contents the CPUC's interpretation and application of the prudency standard to SDG&E creates substantial uncertainty regarding how that standard will be applied to an investor-owned utility in future wildfire cost-recovery proceedings for fires ignited prior to July 12, 2019. SCE will continue to evaluate the probability of recovery based on available evidence, including judicial, legislative and regulatory decisions, including any CPUC decisions illustrating the interpretation and/or application of the prudency standard when making determinations regarding recovery of uninsured wildfire-related costs. While the CPUC has not made a determination regarding SCE's prudency relative to any of the 2017/2018 Wildfire/Mudslide Events, SCE is unable to conclude, at this time, that uninsured CPUC-jurisdictional wildfire-related costs are probable of recovery through electric rates. SCE would record a regulatory asset at the time it obtains sufficient information to support a conclusion that recovery is probable. SCE will seek CPUC-jurisdictional rate recovery of prudently-incurred, actual losses realized in connection with the 2017/2018 Wildfire/Mudslide Events in excess of available insurance.

In July 2019, SCE filed a CEMA application with the CPUC to seek recovery of, among other things, approximately $60 million of capital expenditures and capital related expenses incurred to restore service to customers and to repair, replace and restore buildings and SCE's facilities damaged or destroyed as a result of six 2017 fires, primarily the Thomas and Koenigstein Fires. In July 2021, the CPUC issued a proposed decision which, if adopted, would deny without prejudice SCE's application to recover a revenue requirement for all six 2017 wildfires on the basis that SCE did not demonstrate that it was prudent in relation to the Thomas and Rye fires. CAL FIRE has determined that the Thomas and Rye fires were caused by SCE equipment. While the proposed decision, if adopted, would allow SCE to submit additional applications with the CPUC to recover those costs, SCE must segregate the restoration costs attributable to each of the six fires in any future applications for recovery. The proposed decision also directs that SCE must prove it was prudent in relation to the Thomas and Rye fires in any future application for recovery of those costs and must file any such application within 18 months of a final decision. SCE challenged some aspects of the proposed decision, including the application of the prudency standard with regards to fires in a CEMA proceeding and the 18-month deadline to file an application if the prudency standard is applied. As of June 30, 2021, SCE has $189 million in assets recorded in property, plant and equipment in relation to restoration costs related to the 2017/ 2018 Wildfire/Mudslide Events which may not be recoverable. These assets would be impaired if the restoration costs are permanently disallowed by the CPUC in future cost recovery proceedings. SCE continues to incur costs for reconstructing its system and restoring service to structures that were damaged or destroyed by the Thomas, Koenigstein and Woolsey Fires and plans to file additional applications with the CPUC to recover such costs. See "Recovery of Wildfire-Related Costs" below.

Through the operation of its FERC Formula Rate, and based upon the precedent established in SDG&E's recovery of FERC-jurisdictional wildfire-related costs, SCE believes it is probable it will recover its FERC- jurisdictional wildfire and mudslide related costs and has recorded total expected recoveries of $233 million within the FERC balancing account. This was the FERC portion of the estimated losses accrued. As of June 30, 2021, collections have reduced the regulatory assets remaining in the FERC balancing account to $94 million.

Current Wildfire Insurance Coverage

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Based on policies currently in effect, SCE's 2021 wildfire insurance expense is expected to be approximately $425 million prior to any regulatory deferrals.

In July 2021, the CPUC issued a proposed decision in track 1 of the 2021 GRC proceeding which, if adopted, would authorize $460 million for wildfire insurance expense for 2021 and a one-way balancing account to require any overcollection to be returned to customers. Under the proposed decision, SCE would continue to track incremental wildfire insurance expenses above authorized amounts in its WEMA and recovery of incremental amounts would be subject to reasonableness review.

SCE tracks incremental insurance premium, self-insured retention and co-insurance costs related to wildfire liability insurance policies as well as other wildfire-related costs, including claims and legal costs, in its WEMA. In July 2019, SCE filed a WEMA application with the CPUC to seek recovery of an aggregate of $505 million, consisting of $478 million in wildfire insurance premium costs that had been incurred or were to be incurred before July 1, 2020 in excess of premiums approved in the 2018 GRC and the corresponding financing costs. In September 2020, the CPUC approved SCE's July 2019 WEMA application and authorized SCE to collect a total revenue requirement of $505 million over a two-year period. SCE included the authorized revenue requirement in rates in October 2020. In December 2020, SCE filed another WEMA application with the CPUC to seek recovery of an aggregate of $214 million, consisting of $204 million in wildfire insurance premium costs in excess of premiums approved in the 2018 GRC, representing wildfire insurance premiums for July 1, 2020 through December 31, 2020, the corresponding financing costs, memorandum account interest and a prior period premium adjustment.

SCE's cost of obtaining wildfire insurance coverage has increased significantly in recent years as a result of, among other things, the number of recent and significant wildfire events throughout California and the application of inverse condemnation to investor-owned utilities. As such, while SCE is required to maintain reasonable insurance coverage under AB 1054, SCE may not be able to obtain a reasonable amount of wildfire insurance, at a reasonable cost, for future policy periods.

Recovery of Wildfire-Related Costs

Pre-AB 1054 Cost Recovery

California courts have previously found investor-owned utilities to be strictly liable for property damage, regardless of fault, by applying the theory of inverse condemnation when a utility's facilities were determined to be a substantial cause of a wildfire that caused the property damage. The rationale stated by these courts for applying this theory to investor-owned utilities is that property damages resulting from a public improvement, such as the distribution of electricity, can be spread across the larger community that benefited from such improvement through recovery of uninsured wildfire-related costs in electric rates. However, in November 2017, the CPUC issued a decision denying SDG&E's request to include in its rates uninsured wildfire-related costs arising from several 2007 wildfires, finding that SDG&E did not meet the prudency standard because it did not prudently manage and operate its facilities prior to or at the outset of the 2007 wildfires. In July 2018, the CPUC denied both SDG&E's application for rehearing on its cost recovery request and a joint application for rehearing filed by SCE and PG&E limited to the applicability of inverse condemnation principles in the same proceeding. The California Court of Appeal, the California Supreme Court and the United States Supreme Court have denied SDG&E's petitions for review of the CPUC's denial of SDG&E's application.

2019 Wildfire Legislation

In July 2019, AB 1054 was signed by the governor of California and became effective immediately. The summary of the wildfire legislation below is based on SCE's interpretation of AB 1054. A lawsuit challenging the validity of AB 1054 was filed in federal court on July 19, 2019. Edison International and SCE are unable to predict the outcome of this lawsuit.

AB 1054 Prudency Standard

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Under AB 1054, the CPUC must apply a new standard when assessing the prudency of a utility in connection with a request for recovery of wildfire costs for wildfires ignited after July 12, 2019. Under AB 1054, the CPUC is required to find a utility

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Table of Contents to be prudent if the utility's conduct related to the ignition was consistent with actions that a reasonable utility would have undertaken under similar circumstances, at the relevant point in time, and based on the information available at that time. Prudent conduct under the AB 1054 standard is not limited to the optimum practice, method, or act to the exclusion of others, but rather encompasses a spectrum of possible practices, methods, or acts consistent with utility system needs, the interest of the ratepayers, and the requirements of governmental agencies. AB 1054 also provides that the CPUC may determine that wildfire costs may be recoverable, in whole or in part, by taking into account factors within and outside the utility's control, including humidity, temperature, and winds. Further, utilities with a valid safety certification will be presumed to have acted prudently related to a wildfire ignition unless a party in the cost recovery proceeding creates serious doubt as to the reasonableness of the utility's conduct, at which time, the burden shifts back to the utility to prove its conduct was prudent. If a utility does not have a valid safety certification, it will have the burden to prove, based on a preponderance of evidence, that its conduct was prudent. The new prudency standard will survive the termination of the Wildfire Insurance Fund.

Utilities participating in the Wildfire Insurance Fund are not required to reimburse the fund for amounts withdrawn from the fund that the CPUC finds were prudently incurred and can recover such prudently incurred wildfire costs through electric rates if the fund has been exhausted.

Wildfire Insurance Fund

AB 1054 provided for the Wildfire Insurance Fund to reimburse a utility for payment of third-party damage claims arising from certain wildfires that exceed, in aggregate in a calendar year, the greater of $1.0 billion or the insurance coverage required to be maintained under AB 1054. The Wildfire Insurance Fund was established in September 2019 and is available for claims related to wildfires ignited after July 12, 2019 that are determined by the responsible government investigatory agency to have been caused by a utility.

SCE and SDG&E collectively made their initial contributions totaling approximately $2.7 billion to the Wildfire Insurance Fund in September 2019. Upon its emergence from bankruptcy, on July 1, 2020, PG&E made its initial contribution of approximately $4.8 billion to the Wildfire Insurance Fund. PG&E, SCE and SDG&E are also collectively expected to make aggregate contributions of approximately $3.0 billion to the Wildfire Insurance Fund through annual contributions to the fund over a 10-year period, of which they have made two annual contributions totaling approximately $600 million. In addition to PG&E's, SCE's and SDG&E's contributions to the Wildfire Insurance Fund, PG&E, SCE and SDG&E are expected to collect $6.1 billion, $6.1 billion and $1.3 billion, respectively, from their customers over a 15-year period through a dedicated rate component. The amount collected from customers may be directly contributed to the Wildfire Insurance Fund or used to support the issuance of up to $10.5 billion in bonds by the California Department of Water Resources, the proceeds of which would be contributed to the fund. In addition to funding contributions to the Wildfire Insurance Fund, the amount collected from utility customers will pay for, among other things, any interest and financing costs related to any bonds that are issued by the California Department of Water Resources to support the contributions to the Wildfire Insurance Fund.

SCE made an initial contribution of approximately $2.4 billion to the Wildfire Insurance Fund in September 2019 and committed to make ten annual contributions of approximately $95 million per year to the fund, by no later than January 1 of each year. Through June 30, 2021, SCE has contributed approximately $2.6 billion to the Wildfire Insurance Fund. During 2020 SCE amortized its contributions to the Wildfire Insurance Fund over 10 years, based on evaluation of the fund's expected life based on fire experience. Based on information available in the first quarter of 2021 regarding catastrophic wildfires during 2019 and 2020, SCE reassessed its estimate of the life of the Wildfire Insurance Fund. Using 7 years of historical data (2014 – 2020) of wildfires caused by electrical utility equipment to create Monte Carlo simulations of expected loss, SCE expects the life of the fund to be 15 years from July 12, 2019 which will be reflected prospectively in amortization expense from January 1, 2021. SCE's contributions to the Wildfire Insurance Fund will not be recoverable through electric rates and will

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document be excluded from the measurement of SCE's CPUC-jurisdictional authorized capital structure. SCE will also not be entitled to cost recovery for any borrowing costs incurred in connection with its contributions to the

Wildfire Insurance Fund. See Note 1 in the 2020 Form 10-K for information on the accounting impact of SCE's contributions to the Wildfire Insurance Fund.

Reimbursement from Wildfire Insurance Fund and AB 1054 Liability Cap

Participating investor-owned utilities will be reimbursed from the Wildfire Insurance Fund for eligible claims, subject to the fund administrator's review. SCE will reimburse the fund for any withdrawn amounts if SCE receives payment of such amounts under an indemnification agreement or from an insurance provider or other third-party. SCE will also be required to reimburse the fund for withdrawn amounts that the CPUC disallows, subject to the AB 1054 Liability Cap (as defined below). If the utility has maintained a valid safety certification and its actions or inactions that resulted in the wildfire are not found to constitute conscious or willful disregard of the rights and safety of others, the aggregate requirement to reimburse the fund over a trailing three calendar year period is capped at 20% of the equity portion of the utility's transmission and distribution rate base in the year of the prudency determination ("AB 1054 Liability Cap"). Based on SCE's forecasted weighted-average 2021 transmission and distribution rate base, excluding general plant and intangibles, and using the equity portion of SCE's CPUC authorized capital structure of 52%, SCE's requirement to reimburse the Wildfire Insurance Fund for eligible claims disallowed in 2021 would be capped at approximately $3.2 billion.

SCE will not be allowed to recover borrowing costs incurred to reimburse the fund for amounts that the CPUC disallows. The Wildfire Insurance Fund and, consequently, the AB 1054 Liability Cap will terminate when the administrator determines that the fund has been exhausted.

As of June 30, 2021, the participating investor-owned utilities have not sought reimbursement of wildfire claims from the Wildfire Insurance Fund.

Safety Certification and Wildfire Mitigation Plan

Under AB 1054, SCE can obtain an annual safety certification upon the submission of certain required safety information, including an approved wildfire mitigation plan ("WMP"). On September 17, 2020, SCE obtained a safety certification that will be valid for 12 months. Notwithstanding its 12-month term, if SCE requests a new safety certification by September 13, 2021, then its current safety certification will remain valid until the Office of Energy Infrastructure Safety of the California Natural Resources Agency ("OEIS," which was previously the Wildfire Safety Division of the CPUC) acts on SCE's request for a new safety certification. SCE expects to request a new safety certification by September 13, 2021 and expects the OEIS to act on its request by December 13, 2021.

Under AB 1054, SCE is required to submit a comprehensive WMP to the CPUC at least once every three years for review and approval. Beginning in 2020, each such comprehensive plan was required to cover at least a three-year period. In addition, SCE anticipates updating its comprehensive three-year plans annually in the intervening years.

Capital Expenditure Requirement

Under AB 1054, approximately $1.6 billion of spending by SCE on wildfire risk mitigation capital expenditures made after August 1, 2019, cannot be included in the equity portion of SCE's rate base ("AB 1054 Excluded Capital Expenditures"). SCE can apply for irrevocable orders from the CPUC to finance these AB 1054 Excluded Capital Expenditures, including through the issuance of securitized bonds, and can recover any prudently incurred financing costs. As of June 30, 2021, SCE had spent all of the approximately $1.6 billion in AB 1054 Excluded Capital Expenditures.

In November 2020, the CPUC issued an irrevocable order permitting SCE to finance approximately $340 million, comprised of AB 1054 Excluded Capital Expenditures incurred in connection with GS&RP and prudently incurred financing costs, through the issuance of securitized bonds. SCE issued securitized bonds in the amount of $338 million in February 2021.

In June 2021, SCE filed an application with the CPUC requesting to finance up to $1.0 billion of wildfire mitigation and customer uncollectible costs and associated financing costs through the issuance of securitized bonds. The $1.0 billion request included approximately $518 million of AB 1054 Excluded Capital Expenditures.

SCE expects to seek additional irrevocable orders from the CPUC to finance the remaining AB 1054 Excluded Capital Expenditures.

Environmental Remediation

SCE records its environmental remediation and restoration liabilities when site assessments and/or remedial actions are probable and a range of reasonably likely cleanup costs can be estimated. SCE reviews its sites and measures the liability quarterly, by assessing a range of reasonably likely costs for each identified site using currently available information, including existing technology, presently enacted laws and regulations, experience gained at similar sites, and the probable level of involvement and financial condition of other potentially responsible parties. These estimates include costs for site investigations, remediation, operation and maintenance, monitoring, and site closure. Unless there is a single probable amount, SCE records the lower end of this reasonably likely range of costs (reflected in "Other long-term liabilities") at undiscounted amounts as timing of cash flows is uncertain.

At June 30, 2021, SCE's recorded estimated minimum liability to remediate its 26 identified material sites (sites with a liability balance at June 30, 2021, in which the upper end of the range of expected costs is at least $1 million) was $256 million, including $171 million related to San Onofre. In addition to these sites, SCE also has 14 immaterial sites with a liability balance as of June 30, 2021, for which the total minimum recorded liability was $3 million. Of the $259 million total environmental remediation liability for SCE, $247 million has been recorded as a regulatory asset. SCE expects to recover $40 million through an incentive mechanism that allows SCE to recover 90% of its environmental remediation costs at certain sites (SCE may request to include additional sites in this mechanism) and $207 million through proceedings that allow SCE to recover up to 100% of the costs incurred at certain sites through customer rates. In addition, SCE has other identified sites including several sites for which there is a lack of currently available information, including the nature and magnitude of contamination, and the extent, if any, that SCE may be held responsible for contributing to any costs incurred for remediating these sites. Thus, no reasonable estimate of cleanup costs can be made for these sites.

The ultimate costs to clean up SCE's identified sites may vary from its recorded liability due to numerous uncertainties inherent in the estimation process, such as: the extent and nature of contamination; the scarcity of reliable data for identified sites; the varying costs of alternative cleanup methods; developments resulting from investigatory studies; the possibility of identifying additional sites; and the time periods over which site remediation is expected to occur. SCE believes that, due to these uncertainties, it is reasonably possible that cleanup costs at the identified material sites and immaterial sites could exceed its recorded liability by up to

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document $113 million and $9 million, respectively. The upper limit of this range of costs was estimated using assumptions least favorable to SCE among a range of reasonably possible outcomes.

SCE expects to clean up and mitigate its identified sites over a period of up to 30 years. Remediation costs for each of the next five years are expected to range from $8 million to $22 million. Costs incurred for the six months ended June 30, 2021 and 2020 were $5 million and $3 million, respectively.

Based upon the CPUC's regulatory treatment of environmental remediation costs incurred at SCE, SCE believes that costs ultimately recorded will not materially affect its results of operations, financial position, or cash flows. There can be no assurance, however, that future developments, including additional information about existing sites or the identification of new sites, will not require material revisions to estimates.

Nuclear Insurance

SCE is a member of Nuclear Electric Insurance Limited ("NEIL"), a mutual insurance company owned by entities with nuclear facilities. NEIL provides insurance for nuclear property damage, including damages caused by acts of terrorism up to specified limits, and for accidental outages for active facilities. The amount of nuclear property damage insurance purchased for San Onofre and Palo Verde exceeds the minimum federal requirement of $50 million and $1.1 billion, respectively. If NEIL losses at any nuclear facility covered by the arrangement were to exceed the accumulated funds for these insurance programs, SCE could be assessed retrospective premium adjustments of up to approximately $30 million per year.

Federal law limits public offsite liability claims for bodily injury and property damage from a nuclear incident to the amount of available financial protection, which is currently approximately $13.5 billion for Palo Verde and $560 million for San Onofre. SCE and other owners of San Onofre and Palo Verde have purchased the maximum private primary insurance available through a Facility Form issued by American Nuclear Insurers. SCE withdrew from participation in the secondary insurance pool for San Onofre for offsite liability insurance effective January 5, 2018. Based on its ownership interests in Palo Verde, SCE could be required to pay a maximum of approximately $65 million per nuclear incident for future incidents. However, it would have to pay no more than approximately $10 million per future incident in any one year. Based on its ownership interests in San Onofre and Palo Verde prior to January 5, 2018, SCE could be required to pay a maximum of approximately $255 million per nuclear incident and a maximum of $38 million per year per incident for liabilities arising from events prior to January 5, 2018, although SCE is not aware of any such events.

Spent Nuclear Fuel

Under federal law, the DOE is responsible for the selection and construction of a facility for the permanent disposal of spent nuclear fuel and high-level radioactive waste. The DOE has not met its contractual obligation to accept spent nuclear fuel. Extended delays by the DOE have led to the construction of costly alternatives and associated siting and environmental issues. Currently, both San Onofre and Palo Verde have interim storage for spent nuclear fuel on site sufficient for their current license period.

A settlement entered into between SCE, as operating agent, and the DOE provided for a claim submission/audit process for expenses incurred from 2014 – 2016, under which SCE submitted claims for damages caused by the DOE failure to accept spent nuclear fuel each year and the DOE has approved reimbursement of and paid an aggregate of approximately $88 million (SCE's share was approximately $69 million). These damages awards have been refunded to customers.

In November 2019, SCE filed a new complaint against the DOE to recover damages incurred from January 1, 2017 through July 31, 2018.

Upstream Lighting Program

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document investor-owned utilities based on reports that investor-owned utilities, including SCE, shipped a significant number of bulbs under the program that could not be tracked to

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Table of Contents customers. Beginning in January 2020, the CPUC has sought comments on remedies related to SCE's implementation of the Upstream Lighting Program from 2017 through 2019 program years. SCE undertook an independent investigation of bulbs shipped to retailers categorized as grocery and discount businesses during the 2017 to 2019 program years and found that there were overstocking of bulbs and program management shortcomings. Incentives paid to manufacturers for bulbs shipped to grocery and discount businesses during the relevant period, including those that were sold to customers, were approximately $91 million. In addition, SCE received incentives related to the bulbs shipped to grocery and discount businesses through an energy efficiency incentive mechanism ("ESPI Mechanism") of approximately $3.5 million related to the bulbs shipped in 2017 and 2018. SCE also expects to receive incentives of approximately $1.3 million under the ESPI Mechanism in 2022 related to bulbs shipped to grocery and discount businesses in 2018 and 2019.

In January 2021, the Public Advocates Office and The Utility Reform Network provided comments to the CPUC arguing that SCE imprudently managed the program and requesting: a refund of $33 million of ESPI awards, which includes incentives associated with the Upstream Lighting Program and other energy efficiency programs; a refund of $92 million of incentives paid to manufacturers and associated program administrative costs; $140 million in fines; and additional program improvements to be provided at shareholder expense. In March 2021, SCE filed reply comments arguing that remedies of approximately $21 million were appropriate.

SCE has accrued a charge for potential losses relating to the Upstream Lighting Program. The accrued charge corresponds to the lower end of the reasonably estimated range of expected losses that may be incurred in connection with the Upstream Lighting Program and is subject to change as additional information becomes available.

Note 13. Equity

Common Stock Issuances

Edison International did not issue any shares during the three and six months ended June 30, 2021 through its "at-the-market" ("ATM") program established in May 2019. Under the ATM program, Edison International may sell shares of its common stock having an aggregate sales price of up to $1.5 billion. As of June 30, 2021, shares of common stock having an aggregate offering price of $1.3 billion remained available to be sold under the ATM program. Edison International has no obligation to sell the remaining available shares.

Edison International continued to settle its ongoing common stock requirements of various internal programs through issuance of new common stock. During the three months ended June 30, 2021, 153,600 shares of common stock were purchased by employees through the 401(k) defined contribution savings plan for net cash receipts of $9 million, 28,609 shares of common stock were issued as stock compensation awards for net cash receipts of $1 million and 73,061 shares of new common stock were issued in lieu of distributing $4 million to shareholders opting to receive dividend payments in the form of additional common stock.

During the six months ended June 30, 2021, 413,300 shares of common stock were purchased by employees through the 401(k) defined contribution savings plan for net cash receipts of $24 million, 212,594 shares of common stock were issued as stock compensation awards for net cash receipts of $5 million and 147,915 shares of new common stock were issued in lieu of distributing $8 million to shareholders opting to receive dividend payments in the form of additional common stock. In June 2021, Edison International discontinued the issuance of new Edison International stock through the 401(k) defined contribution savings plan.

Equity Contributions

In the three and six months ended June 30, 2021, SCE received a total of $325 million and $1.2 billion in capital contributions from Edison International Parent, respectively, to support SCE's capital program, maintain the equity portion of SCE's capital structure at authorized levels and for general corporate purposes.

Preferred Stock Issuance

In March 2021, Edison International issued 1,250,000 shares of 5.375% Fixed-Rate Reset Cumulative Perpetual Preferred Stock, Series A, with a liquidation value of $1,000 per share (the "Series A preferred stock"). The dividends are payable on a semi-annual basis, commencing September 15, 2021. The dividend rate will be reset every five years beginning on March 15, 2026 to equal the then-current five-year U.S. Treasury rate plus a spread of 4.698%. The net proceeds of $1.2 billion were used to repay commercial paper borrowings and for general corporate purposes, including making a $575 million equity contribution to SCE.

Edison International may, at its option, redeem the Series A preferred stock in whole or in part during certain period of time prior to each of the dividend reset date at a price equal to $1,000 per share plus any accumulated and unpaid dividends. Edison International may also, at its option, redeem the Series A preferred stock in whole but not in part at a price equal to $1,020 per share plus any accumulated and unpaid dividends within a certain period of time following any change in the criteria rating agencies use that would have adverse effects on the equity credit attributed by rating agencies to the Series A preferred stock.

The Series A preferred stock ranks senior to Edison International's common stock with respect to dividends rights and distribution rights upon liquidation. The Series A preferred stock is not subject to any mandatory sinking fund, retirement fund, purchase fund or other similar provisions. Holders of the shares of Series A preferred stock do not have the right to require Edison International to repurchase or redeem shares of the Series A preferred stock.

Note 14. Accumulated Other Comprehensive Loss

Edison International's accumulated other comprehensive loss, net of tax, consist of: Three months ended Six months ended June 30, June 30, (in millions) 2021 2020 2021 2020 Beginning balance $ (67) $ (67) $ (69) $ (69) Pension and PBOP – net loss: Reclassified from accumulated other comprehensive loss1 2 2 4 4 Change 2 2 4 4 Ending Balance $ (65) $ (65) $ (65) $ (65)

1 These items are included in the computation of net periodic pension and PBOP Plan expense. See Note 9 for additional information.

SCE's accumulated other comprehensive loss, net of tax, consists of: Three months ended Six months ended June 30, June 30, (in millions) 2021 2020 2021 2020 Beginning balance $ (39) $ (37) $ (41) $ (39) Pension and PBOP – net loss: Reclassified from accumulated other comprehensive loss1 1 1 3 3 Change 1 1 3 3 Ending Balance $ (38) $ (36) $ (38) $ (36)

1 These items are included in the computation of net periodic pension and PBOP Plan expense. See Note 9 for additional information.

Note 15. Other Income

Other income net of expenses is as follows:

Three months ended Six months ended June 30, June 30, (in millions) 2021 2020 2021 2020 SCE other income (expense): Equity allowance for funds used during construction $ 25 $ 30 $ 60 $ 51 Increase in cash surrender value of life insurance policies and life insurance benefits 15 23 25 33 Interest income 1 7 1 16 Net periodic benefit income – non-service components 33 27 66 55 Civic, political and related activities and donations (8) (4) (12) (15) Other (2) (1) (4) (6) Total SCE other income 64 82 136 134 Other income (expense) of Edison International Parent and Other: Net periodic benefit costs – non-service components — — — (1) Other1 12 (1) 12 — Total Edison International other income $ 76 $ 81 $ 148 $ 133

1 Includes $12 million unrealized gains on investment in Proterra. For further details, see Note 10. Investments.

Note 16. Supplemental Cash Flows Information

Supplemental cash flows information is:

Edison International SCE Six months ended June 30, (in millions) 2021 2020 2021 2020 Cash payments (receipts): Interest, net of amounts capitalized $ 408 $ 369 $ 345 $ 312 Income taxes, net (87) — (87) — Non-cash financing and investing activities: Dividends declared but not paid: Common stock 252 241 — — Preferred and preference stock — 12 — 12

SCE's accrued capital expenditures at June 30, 2021 and 2020 were $478 million and $450 million, respectively. Accrued capital expenditures will be included as an investing activity in the consolidated statements of cash flow in the period paid.

Note 17. Related-Party Transactions

For the three and six months ended June 30, 2021, SCE entered into wildfire liability insurance contracts with premiums of approximately $160 million payable to Edison Insurance Services, Inc. ("EIS"), a wholly-owned subsidiary of Edison International. For the three and six months ended June 30, 2020, SCE entered into wildfire liability insurance contracts with premiums payable to EIS of $176 million. The related-party transactions included in SCE's consolidated balance sheets for wildfire-related insurance purchased from EIS and related expected insurance recoveries were as follows:

June 30, December 31, (in millions) 2021 2020 Current insurance receivable due from affiliate $ — $ 268 Prepaid insurance1 — 56

1 Reflected in "Prepaid expenses" on SCE's consolidated balance sheets.

The expense for wildfire-related insurance premiums paid to EIS was $44 million and $50 million for the three months ended June 30, 2021 and 2020, and $87 million and $100 million for the six months ended June 30, 2021 and 2020, respectively.

CONTROLS AND PROCEDURES

Disclosure Controls and Procedures

The management of Edison International and SCE, under the supervision and with the participation of Edison International's and SCE's respective Chief Executive Officers and Chief Financial Officers, have evaluated the effectiveness of Edison International's and SCE's disclosure controls and procedures (as that term is defined in Rules 13a-15(e) or 15d-15(e) under the Securities Exchange Act of 1934, as amended), respectively, as of the end of the second quarter of 2021. Based on that evaluation, Edison International's and SCE's respective Chief Executive Officers and Chief Financial Officers have each concluded that, as of the end of the period, Edison International's and SCE's disclosure controls and procedures, respectively, were effective.

Changes in Internal Control Over Financial Reporting

SCE implemented a new customer service system in April 2021. The new customer service system replaced the majority of SCE's mainframe customer service applications with a more modern system. The implementation resulted in material changes to SCE's internal controls over financial reporting. Therefore, SCE has designed and implemented processes and procedures relating to the new system to replace and supplement existing internal controls over financial reporting, as appropriate. The new system implementation was not undertaken in response to any actual or perceived deficiencies in SCE's internal control over financial reporting.

Except for changes related to SCE's new customer service system, there were no changes in Edison International's or SCE's internal control over financial reporting, respectively, during the second quarter of 2021 that have materially affected, or are reasonably likely to materially affect, Edison International's or SCE's internal control over financial reporting.

Jointly Owned Utility Plant

Edison International's and SCE's respective scope of evaluation of internal control over financial reporting includes their Jointly Owned Utility Projects as discussed in Notes to Consolidated Financial Statements—Note 2. Property, Plant and Equipment in the 2020 Form 10-K.

LEGAL PROCEEDINGS

2017/2018 Wildfire/Mudslide Events

See "Notes to Consolidated Financial Statements—Note 12. Commitments and Contingencies—Contingencies—Southern California Wildfires and Mudslides" for information regarding legal proceedings related to the 2017/2018 Wildfire/Mudslide Events.

Environmental Proceedings

Each of Edison International and SCE have elected to disclose environmental proceedings described in Item 103(c)(3)(iii) of Regulation SK unless it reasonably believes that such proceeding will result in no monetary sanctions, or in monetary sanctions, exclusive of interest and costs, of less than $1,000,000.

SCE's systems and network infrastructure are targets for physical and cyber attacks, intrusions or other catastrophic events that could result in their failure or reduced functionality. Regulators such as NERC and U.S. Government agencies, including the Departments of Defense, Homeland Security and Energy, have increasingly stressed that threat sources continue to seek to exploit potential vulnerabilities in the U.S. national electric grid and other energy infrastructures, and that such attacks and disruptions, both physical and cyber, are highly sophisticated and dynamic. The Worldwide Threat Assessment of the US Intelligence Community, reported by the Director

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Table of Contents of National Intelligence to the U.S. Senate's Select Committee on Intelligence in 2019, advised that some foreign powers have "the ability to launch cyber attacks that cause localized, temporary disruptive effects on critical infrastructure and provided "disrupting an electrical distribution network for at least a few hours" as an example of a possible disruption. In addition to addressing foreign powers, the Assessment also noted that "financially motivated cyber criminals very likely will expand their targets in the United States in the next few years." In 2020, several U.S. Government agencies highlighted the increasing risks related to ransomware attacks and cybersecurity risks related to the electric sector, including its supply chains. While the 2021 Annual Threat Assessment of the US Intelligence Community notes that "cyber threats from nation states and their surrogates will remain acute," the 2021 ransomware attacks that shut down the operations of multiple businesses in the United States including a critical infrastructure company and a major food service company, serve as evidence that critical infrastructure in the United States, including SCE's electricity distribution system, are subject to, and can be disrupted by, cybersecurity attacks. SCE's operations require the continuous availability of critical information technology systems, sensitive customer and employee data and network infrastructure and information, all of which are targets for malicious actors. New cyber and physical threats arise as SCE moves from an analog to a digital electric grid. For example, SCE's grid modernization efforts and the move to a network-connected grid increases the number of opportunities and potential vulnerabilities that an adversary can target.

SCE depends on a wide array of vendors to provide it with services and equipment. Malicious actors may attack vendors to disrupt the services they provide to SCE, or to use those vendors as a cyber conduit to attack SCE. Additionally, the equipment and material provided by SCE's vendors may contain cyber vulnerabilities. A compromise of equipment and/or exfiltration of SCE data, whether by physical or by electronic means, could result in loss or changes to confidential or sensitive electronic data, loss of intellectual property and interruption of business processes. While some of SCE's vendors have experienced cybersecurity incidents, such incidents have not, to SCE's knowledge, resulted in a material impact to SCE to date.

SCE's systems have experienced, and will continue to experience, cybersecurity incidents involving attacks of malicious codes, unauthorized access attempts, and other illicit activities, but to SCE's knowledge it has not experienced a material cybersecurity or data breach to date. Though SCE actively monitors developments in this area and is involved in various industry groups and government initiatives, no security measures can completely shield its systems and infrastructure from cyber attacks, intrusions or other catastrophic events that could result in their failure or reduced functionality.

If SCE's information technology and operational technology systems' security measures were to be breached, or a critical system failure were to occur without timely recovery, SCE could be unable to fulfill critical business functions, such as delivery of electricity to customers, and/or sensitive confidential personal and other data could be compromised, which could result in violations of applicable privacy and other laws, material financial loss to SCE or to its customers, loss of confidence in SCE's security measures, customer dissatisfaction, and significant litigation and/or regulatory exposure, all of which could materially affect SCE's financial condition and results of operations and materially damage the business reputation of Edison International and SCE.

EXHIBITS

Exhibit Number Description 10.1 First Amendment, dated as of April 30, 2021, to the Second Amended and Restated Credit Agreement, dated as of May 17, 2018, by and among Edison International, the several banks and other financial institutions party thereto and JPMorgan Chase bank, N.A., as administrative agent. (File No. 1-9936, filed as Exhibit 10.1 to Edison International's Form 8-K dated April 30, 2021 and filed May 6, 2021)*

10.2 First Amendment, dated as of April 30, 2021, to the Second Amended and Restated Credit Agreement, dated as of May 17, 2018, by and among Southern California Edison Company, the several banks and other financial institutions party thereto and JPMorgan Chase bank, N.A., as administrative agent. (File No. 1-2313, filed as Exhibit 10.2 to Southern California Edison Company's Form 8-K dated April 30, 2021 and filed May 6, 2021)*

10.3 Commitment Increase Supplement, by and among Southern California Edison Company and the lenders named therein, and accepted by JPMorgan Chase Bank, N.A., as administrative agent and the issuing lenders named therein. (File No. 1-2313, filed as Exhibit 10.3 to Southern California Edison Company's Form 8-K dated April 30, 2021 and filed May 6, 2021)*

10.4 Term Loan Credit Agreement dated as of May 10, 2021, among Southern California Edison Company, the several banks and other financial institutions from time to time parties thereto and Royal Bank of Canada, as administrative agent and green loan structuring agent. ( File No. 1-2313, filed as Exhibit 10.1 to Southern California Edison Company's Form 8-K dated May 10, 2021 and filed May 11, 2021)*

31.1 Certifications of the Chief Executive Officer and Chief Financial Officer of Edison International pursuant to Section 302 of the Sarbanes-Oxley Act

31.2 Certifications of the Chief Executive Officer and Chief Financial Officer of Southern California Edison Company pursuant to Section 302 of the Sarbanes-Oxley Act

32.1 Certifications of the Chief Executive Officer and the Chief Financial Officer of Edison International required by Section 906 of the Sarbanes-Oxley Act

32.2 Certifications of the Chief Executive Officer and the Chief Financial Officer of Southern California Edison Company required by Section 906 of the Sarbanes-Oxley Act

101.1 Financial statements from the quarterly report on Form 10-Q of Edison International for the quarter ended June 30, 2021, filed on July 29, 2021, formatted in Inline XBRL: (i) the Consolidated Statements of Income; (ii) the Consolidated Statements of Comprehensive Income; (iii) the Consolidated Balance Sheets; (iv) the Consolidated Statements of Cash Flows; and (v) the Notes to Consolidated Financial Statements

101.2 Financial statements from the quarterly report on Form 10-Q of Southern California Edison Company for the quarter ended June 30, 2021, filed on July 29, 2021, formatted in Inline XBRL: (i) the Consolidated Statements of Income; (ii) the Consolidated Statements of Comprehensive

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Income; (iii) the Consolidated Balance Sheets; (iv) the Consolidated Statements of Cash Flows; and (v) the Notes to Consolidated Financial Statements

104 The cover page of this report formatted in Inline XBRL (included as Exhibit 101)

* Incorporated by reference pursuant to Rule 12b-32.

Edison International and SCE will furnish a copy of any exhibit listed in the accompanying Exhibit Index upon written request and upon payment to Edison International or SCE of their reasonable expenses of furnishing such exhibit, which shall be limited to photocopying charges and, if mailed to the requesting party, the cost of first-class postage.

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrants have duly caused this report to be signed on their behalf by the undersigned, thereunto duly authorized.

SOUTHERN CALIFORNIA EDISON EDISON INTERNATIONAL COMPANY

By: /s/ Aaron D. Moss By: /s/ William M. Petmecky III William M. Petmecky III Aaron D. Moss Senior Vice President and Chief Financial Vice President and Controller Officer (Duly Authorized Officer and (Duly Authorized Officer and Principal Accounting Officer) Principal Financial Officer)

Date: July 29, 2021 Date:July 29, 2021

CERTIFICATION

I, PEDRO J. PIZARRO, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q for the quarter ended June 30, 2021 of Edison International;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5. The registrant's other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document (a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date: July 29, 2021

/s/ PEDRO J. PIZARRO PEDRO J. PIZARRO Chief Executive Officer

I, MARIA RIGATTI , certify that:

1. I have reviewed this Quarterly Report on Form 10-Q for the quarter ended June 30, 2021 of Edison International;

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date: July 29, 2021

CERTIFICATION

I, KEVIN M. PAYNE, certify that: 1. I have reviewed this Quarterly Report on Form 10-Q for the quarter ended June 30, 2021 of Southern California Edison Company;

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date: July 29, 2021

I, WILLIAM M PETMECKY III, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q for the quarter ended June 30, 2021 of Southern California Edison Company;

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date: July 29, 2021 /s/ WILLIAM M PETMECKY III WILLIAM M. PETMECKY III Chief Financial Officer

STATEMENT PURSUANT TO 18 U.S.C. SECTION 1350, AS ENACTED BY SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the accompanying Quarterly Report on Form 10-Q for the quarter ended June 30, 2021 (the "Quarterly Report"), of Edison International (the "Company"), and pursuant to 18 U.S.C. Section 1350, as enacted by Section 906 of the Sarbanes-Oxley Act of 2002, each of the undersigned certifies, to the best of his or her knowledge, that:

1. The Quarterly Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934 (15 U.S.C. 78m(a) or 78o(d)); and

2. The information contained in the Quarterly Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: July 29, 2021

/s/ PEDRO J. PIZARRO PEDRO J. PIZARRO Chief Executive Officer Edison International

/s/ MARIA RIGATTI MARIA RIGATTI Chief Financial Officer Edison International

This statement accompanies the Quarterly Report pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 and shall not, except to the extent required by the Sarbanes-Oxley Act of 2002, be deemed filed by the Company for purposes of Section 18 of the Securities Exchange Act of 1934, as amended.

A signed original of this written statement has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.

STATEMENT PURSUANT TO 18 U.S.C. SECTION 1350, AS ENACTED BY SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the accompanying Quarterly Report on Form 10-Q for the quarter ended June 30, 2021 (the "Quarterly Report"), of Southern California Edison Company (the "Company"), and pursuant to 18 U.S.C. Section 1350, as enacted by Section 906 of the Sarbanes-Oxley Act of 2002, each of the undersigned certifies, to the best of his knowledge, that:

1. The Quarterly Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934 (15 U.S.C. 78m(a) or 78o(d)); and

2. The information contained in the Quarterly Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: July 29, 2021

/s/ KEVIN M. PAYNE KEVIN M. PAYNE Chief Executive Officer Southern California Edison Company

/s/ WILLIAM M. PETMECKY III WILLIAM M. PETMECKY III Chief Financial Officer Southern California Edison Company

A signed original of this written statement has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document 6 Months Ended Cover Page - shares Jun. 30, 2021 Jul. 22, 2021 Entity Information [Line Items] Document Type 10-Q Document Quarterly Report true Document Transition Report false Document Period End Date Jun. 30, 2021 Entity File Number 1-9936 Entity Registrant Name EDISON INTERNATIONAL Entity Incorporation, State or Country Code CA Entity Tax Identification Number 95-4137452 Entity Address, Address Line One 2244 Walnut Grove Avenue Entity Address, Address Line Two (P.O. Box 976) Entity Address, City or Town Rosemead, Entity Address, State or Province CA Entity Address, Postal Zip Code 91770 City Area Code (626) Local Phone Number 302-2222 Title of 12(b) Security Common Stock, no par value Trading Symbol EIX Security Exchange Name NYSE Entity Current Reporting Status Yes Entity Interactive Data Current Yes Entity Filer Category Large Accelerated Filer Entity Small Business false Entity Emerging Growth Company false Entity Shell Company false Entity Common Stock, Shares Outstanding 379,704,799 Entity Central Index Key 0000827052 Current Fiscal Year End Date --12-31 Document Fiscal Year Focus 2021 Document Fiscal Period Focus Q2 Amendment Flag false SCE Entity Information [Line Items] Document Type 10-Q Document Quarterly Report false Document Transition Report false Document Period End Date Jun. 30, 2021 Entity File Number 1-2313 Entity Registrant Name SOUTHERN CALIFORNIA EDISON COMPANY Entity Incorporation, State or Country Code CA Entity Tax Identification Number 95-1240335

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Entity Address, Address Line One 2244 Walnut Grove Avenue Entity Address, Address Line Two (P.O. Box 800) Entity Address, City or Town Rosemead, Entity Address, State or Province CA Entity Address, Postal Zip Code 91770 City Area Code (626) Local Phone Number 302-1212 Entity Current Reporting Status Yes Entity Interactive Data Current Yes Entity Filer Category Non-accelerated Filer Entity Small Business false Entity Emerging Growth Company false Entity Shell Company false Entity Common Stock, Shares Outstanding 434,888,104 Entity Central Index Key 0000092103 Current Fiscal Year End Date --12-31 Document Fiscal Year Focus 2021 Document Fiscal Period Focus Q2 Amendment Flag false

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Consolidated Statements of 3 Months Ended 6 Months Ended Income - USD ($) Jun. 30, Jun. 30, Jun. 30, Jun. 30, shares in Millions, $ in 2021 2020 2021 2020 Millions Total operating revenue $ 3,315 $ 2,987 $ 6,275 $ 5,777 Purchased power and fuel 1,283 1,068 2,296 1,996 Operation and maintenance 754 762 1,598 1,643 Wildfire Insurance Fund expense 54 83 107 167 Depreciation and amortization 533 489 1,058 973 Property and other taxes 117 103 243 214 Other operating income, net of impairment (11) (18) (11) (18) Total operating expenses 2,730 2,487 5,291 4,975 Operating income 585 500 984 802 Interest expense (232) (229) (449) (454) Other income 76 81 148 133 Income before income taxes 429 352 683 481 Income tax expense (benefit) 68 4 32 (80) Net income 361 348 651 561 Preferred and preference stock dividend requirements 17 21 Net income attributable to common shareholders $ 318 $ 318 $ 577 $ 501 Basic earnings per share Weighted average shares of common stock outstanding (in shares) 380 375 379 367 Basic earnings per common share attributable to Edison International $ 0.84 $ 0.85 $ 1.52 $ 1.37 common shareholders (in dollars per share) Diluted earnings per share Weighted average shares of common stock outstanding, including effect of 380 376 380 368 dilutive securities (in shares) Diluted earnings per common share attributable to Edison International $ 0.84 $ 0.85 $ 1.52 $ 1.36 common shareholders (in dollars per share) SCE Total operating revenue $ 3,306 $ 2,980 $ 6,259 $ 5,760 Purchased power and fuel 1,283 1,068 2,296 1,996 Operation and maintenance 735 741 1,562 1,600 Wildfire Insurance Fund expense 54 83 107 167 Depreciation and amortization 533 489 1,057 972 Property and other taxes 117 103 242 213 Other operating income, net of impairment (11) (52) (11) (52) Total operating expenses 2,711 2,432 5,253 4,896 Operating income 595 548 1,006 864 Interest expense (198) (193) (382) (387) Other income 64 82 136 134 Income before income taxes 461 437 760 611 Income tax expense (benefit) 76 26 52 (49) Net income 385 411 708 660

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Preferred and preference stock dividend requirements 26 30 53 60 Net income attributable to common shareholders $ 359 $ 381 $ 655 $ 600

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Consolidated Statements of 3 Months Ended 6 Months Ended Comprehensive Income - Jun. 30, Jun. 30, Jun. 30, Jun. 30, USD ($) 2021 2020 2021 2020 $ in Millions Net income (loss) $ 361 $ 348 $ 651 $ 561 Pension and postretirement benefits other than pensions: Pension and postretirement benefits other than pensions 2 2 4 4 Other comprehensive income, net of tax 2 2 4 4 Comprehensive income 363 350 655 565 Less: Comprehensive income attributable to noncontrolling 26 30 53 60 interests Comprehensive income attributable to Edison International 337 320 602 505 SCE Net income (loss) 385 411 708 660 Pension and postretirement benefits other than pensions: Pension and postretirement benefits other than pensions 1 1 3 3 Other comprehensive income, net of tax 1 1 3 3 Comprehensive income $ 386 $ 412 $ 711 $ 663

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Consolidated Balance Sheets Jun. 30, Dec. 31, - USD ($) 2021 2020 $ in Millions ASSETS Cash and cash equivalents $ 84 $ 87 Receivables, less allowances for uncollectible accounts 1,314 1,130 Accrued unbilled revenue 863 521 Insurance receivable 708 Income tax receivables 0 68 Inventory 406 405 Prepaid expenses 57 281 Regulatory assets 1,795 1,314 Wildfire Insurance Fund contributions 204 323 Other current assets 198 224 Total current assets 4,921 5,061 Nuclear decommissioning trusts 4,886 4,833 Marketable securities 21 Other investments 58 53 Total investments 4,965 4,886 Utility property, plant and equipment, less accumulated depreciation and 48,800 47,653 amortization Nonutility property, plant and equipment, less accumulated depreciation 189 186 Total property, plant and equipment 48,989 47,839 Regulatory assets 7,810 7,120 Wildfire Insurance Fund contributions 2,462 2,443 Operating lease right-of-use assets 1,047 1,088 Long-term insurance receivables 75 75 Other long-term assets 893 860 Total long-term assets 12,287 11,586 Total assets 71,162 69,372 LIABILITIES AND EQUITY Short-term debt 2,821 2,398 Current portion of long-term debt 415 1,029 Accounts payable 1,797 1,980 Wildfire-related claims 141 2,231 Customer deposits 207 243 Regulatory liabilities 492 569 Current portion of operating lease liabilities 216 215 Other current liabilities 1,726 1,612 Total current liabilities 7,815 10,277 Long-term debt 22,891 19,632 Deferred income taxes and credits 5,614 5,368 Pensions and benefits 543 563 Asset retirement obligations 2,894 2,930

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Regulatory liabilities 8,960 8,589 Operating lease liabilities 831 873 Wildfire-related claims 1,519 2,281 Other deferred credits and other long-term liabilities 2,782 2,910 Total deferred credits and other liabilities 23,143 23,514 Total liabilities 53,849 53,423 Commitments and contingencies (Note 12) Preferred / preference stock 1,235 Common stock, no par value, including additional paid-in capital 6,013 5,962 Accumulated other comprehensive loss (65) (69) Retained earnings 8,229 8,155 Total Edison International's shareholders' equity 15,412 14,048 Noncontrolling interests - preference stock of SCE 1,901 1,901 Total equity 17,313 15,949 Total liabilities and equity 71,162 69,372 SCE Recovery Funding LLC ASSETS Regulatory assets 2 Other current assets 6 Regulatory assets 329 LIABILITIES AND EQUITY Current portion of long-term debt 14 Other current liabilities 3 Long-term debt 320 SCE ASSETS Cash and cash equivalents 51 55 Receivables, less allowances for uncollectible accounts 1,305 1,126 Accrued unbilled revenue 863 521 Insurance receivable 0 440 Insurance receivable from affiliate 0 268 Income tax receivables 69 Inventory 406 405 Prepaid expenses 56 280 Regulatory assets 1,795 1,314 Wildfire Insurance Fund contributions 204 323 Other current assets 191 216 Total current assets 4,871 5,017 Nuclear decommissioning trusts 4,886 4,833 Other investments 50 37 Total investments 4,936 4,870 Utility property, plant and equipment, less accumulated depreciation and 48,800 47,653 amortization Nonutility property, plant and equipment, less accumulated depreciation 183 180

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Total property, plant and equipment 48,983 47,833 Regulatory assets 7,810 7,120 Wildfire Insurance Fund contributions 2,462 2,443 Operating lease right-of-use assets 1,040 1,085 Long-term insurance receivables 75 75 Other long-term assets 861 843 Total long-term assets 12,248 11,566 Total assets 71,038 69,286 LIABILITIES AND EQUITY Short-term debt 2,796 2,268 Current portion of long-term debt 415 1,029 Accounts payable 1,799 1,983 Wildfire-related claims 141 2,231 Customer deposits 207 243 Regulatory liabilities 492 569 Current portion of operating lease liabilities 216 214 Other current liabilities 1,288 1,294 Total current liabilities 7,354 9,831 Long-term debt 19,756 16,499 Deferred income taxes and credits 7,052 6,783 Pensions and benefits 131 144 Asset retirement obligations 2,894 2,930 Regulatory liabilities 8,960 8,589 Operating lease liabilities 824 871 Wildfire-related claims 1,519 2,281 Other deferred credits and other long-term liabilities 2,661 2,708 Total deferred credits and other liabilities 24,041 24,306 Total liabilities 51,151 50,636 Commitments and contingencies (Note 12) Preferred / preference stock 1,945 1,945 Common stock, no par value 2,168 2,168 Additional paid-in capital 6,616 5,387 Accumulated other comprehensive loss (38) (41) Retained earnings 9,196 9,191 Total equity 19,887 18,650 Total liabilities and equity 71,038 $ 69,286 SCE | SCE Recovery Funding LLC ASSETS Regulatory assets 329 LIABILITIES AND EQUITY Long-term debt $ 320

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Consolidated Balance Sheets (Parenthetical) - USD ($) Jun. 30, 2021Dec. 31, 2020 $ in Millions Receivables, allowances for uncollectible accounts $ 270 $ 188 Utility property, plant and equipment, accumulated depreciation 10,878 10,681 Nonutility property, plant and equipment, accumulated depreciation $ 96 $ 94 Preferred stock, shares authorized 50,000,000 Preferred stock, shares issued 1,250,000 Preferred stock, shares outstanding 1,250,000 Common stock, no par value (in dollars per share) $ 0 $ 0 Common stock, shares authorized 800,000,000 800,000,000 Common stock, shares issued 379,695,134 378,907,147 Common stock, shares outstanding 379,695,134 378,907,147 SCE Receivables, allowances for uncollectible accounts $ 270 $ 188 Utility property, plant and equipment, accumulated depreciation 10,878 10,681 Nonutility property, plant and equipment, accumulated depreciation $ 87 $ 86 Common stock, no par value (in dollars per share) $ 0 $ 0 Common stock, shares authorized 560,000,000 560,000,000 Common stock, shares issued 434,888,104 434,888,104 Common stock, shares outstanding 434,888,104 434,888,104

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Consolidated Statements of 6 Months Ended Cash Flows - USD ($) Jun. 30, Jun. 30, $ in Millions 2021 2020 Cash flows from operating activities: Net income $ 651 $ 561 Adjustments to reconcile to net cash provided by operating activities: Depreciation and amortization 1,090 1,005 Allowance for equity during construction (60) (51) Impairment and other (11) (18) Deferred income taxes 30 (58) Wildfire Insurance Fund amortization expense 107 167 Other 11 32 Nuclear decommissioning trusts (127) (62) Changes in operating assets and liabilities: Receivables (293) (108) Inventory (3) (19) Accounts payable 128 14 Tax receivables and payables 91 31 Other current assets and liabilities (244) (23) Regulatory assets and liabilities, net (574) (927) Wildfire-related insurance receivable 708 73 Wildfire-related claims (2,852) 0 Other noncurrent assets and liabilities (26) 8 Net cash (used in) provided by operating activities (1,374) 625 Cash flows from financing activities: Long-term debt issued, plus premium and net of discount and issuance costs of $[ ] and 3,953 2,726 $19 for the respective periods Long-term debt repaid or repurchased (991) (814) Short-term debt issued 2,106 1,275 Short-term debt repaid 1,355 800 Common stock issued 25 884 Preference stock issued, net 1,235 Commercial paper repayment, net of borrowing (656) (550) Dividends and distribution to noncontrolling interests (53) (60) Dividends paid (494) (454) Other 12 16 Net cash provided by financing activities 3,782 2,223 Cash flows from investing activities: Capital expenditures (2,593) (2,514) Proceeds from sale of nuclear decommissioning trust investments 2,542 3,225 Purchases of nuclear decommissioning trust investments (2,415) (3,163) Other 54 60 Net cash used in investing activities (2,412) (2,392)

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Net (decrease) increase in cash, cash equivalents and restricted cash (4) 456 Cash, cash equivalents and restricted cash at beginning of period 89 70 Cash, cash equivalents and restricted cash at end of period 85 526 SCE Cash flows from operating activities: Net income 708 660 Adjustments to reconcile to net cash provided by operating activities: Depreciation and amortization 1,086 1,001 Allowance for equity during construction (60) (51) Impairment and other (11) (52) Deferred income taxes 51 (22) Wildfire Insurance Fund amortization expense 107 167 Other 16 24 Nuclear decommissioning trusts (127) (62) Changes in operating assets and liabilities: Receivables (288) (114) Inventory (3) (19) Accounts payable 127 (12) Tax receivables and payables 91 47 Other current assets and liabilities (236) (22) Regulatory assets and liabilities, net (574) (927) Wildfire-related insurance receivable 708 73 Wildfire-related claims (2,852) 0 Other noncurrent assets and liabilities (26) (8) Net cash (used in) provided by operating activities (1,283) 683 Cash flows from financing activities: Long-term debt issued, plus premium and net of discount and issuance costs of $[ ] and 3,952 2,330 $19 for the respective periods Long-term debt repaid or repurchased (991) (414) Short-term debt issued 2,106 475 Short-term debt repaid 1,355 0 Capital contributions from Edison International Parent 1,225 888 Commercial paper repayment, net of borrowing (551) (550) Dividends paid (703) (798) Other 6 0 Net cash provided by financing activities 3,689 1,931 Cash flows from investing activities: Capital expenditures (2,591) (2,512) Proceeds from sale of nuclear decommissioning trust investments 2,542 3,225 Purchases of nuclear decommissioning trust investments (2,415) (3,163) Other 53 66 Net cash used in investing activities (2,411) (2,384) Net (decrease) increase in cash, cash equivalents and restricted cash (5) 230 Cash, cash equivalents and restricted cash at beginning of period 56 24

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Consolidated Statements of 6 Months Ended Cash Flows (Parenthetical) - USD ($) Jun. 30, 2021Jun. 30, 2020 $ in Millions Premium and net of discount and issuance costs $ (36) $ 26 SCE Premium and net of discount and issuance costs $ (36) $ 30

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Summary of Significant 6 Months Ended Accounting Policies Jun. 30, 2021 Accounting Policies [Abstract] Summary of Significant Note 1. Summary of Significant Accounting Policies Accounting Policies Organization and Basis of Presentation

The December 31, 2020 financial statement data was derived from audited financial statements but does not include all disclosures required by GAAP.

Cash, Cash Equivalents and Restricted Cash

Edison International SCE June 30, December 31, June 30, December 31, (in millions) 2021 2020 2021 2020 Money market funds $ 47 $ 62 $ 20 $ 38

Edison International SCE June 30, December 31, June 30, December 31, (in millions) 2021 2020 2021 2020 Book balances reclassified to accounts payable $ 61 $ 69 $ 61 $ 69

The following table sets forth the cash, cash equivalents and restricted cash included in the consolidated statements of cash flows:

1 Reflected in "Other current assets" on Edison International's and SCE's consolidated balance sheets.

Allowance for Uncollectible Accounts

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document The allowance for uncollectible accounts is recorded based on SCE's estimate of expected credit losses and adjusted over the life of the receivables as needed. Since the customer base of SCE is concentrated in Southern California and exposes SCE to a homogeneous set of economic conditions, the allowance is measured on a collective basis on the historical amounts written-off, assessment of customer collectability and current economic trends, including unemployment rates and any likelihood of recession for the region. At June 30, 2021, this included the estimated impacts of the COVID-19 pandemic.

The following tables set forth the changes in allowance for uncollectible accounts for SCE:

Revenue Recognition

Regulatory Proceedings

2021 General Rate Case

Employee Stock Purchase Plan

Earnings Per Share

EPS attributable to Edison International common shareholders was computed as follows:

Three months ended June 30, Six months ended June 30, (in millions, except per-share amounts) 2021 2020 2021 2020 Basic earnings per share: Net income attributable to common shareholders $ 318 $ 318 $ 577 $ 501 Participating securities dividends — — — — Net income available to common shareholders $ 318 $ 318 $ 577 $ 501 Weighted average common shares outstanding 380 375 379 367 Basic earnings per share $ 0.84 $ 0.85 $ 1.52 $ 1.37 Diluted earnings per share: Net income attributable to common shareholders $ 318 $ 318 $ 577 $ 501 Participating securities dividends — — — — Net income available to common shareholders $ 318 $ 318 $ 577 $ 501 Income impact of assumed conversions — — — — Net income available to common shareholders and assumed conversions $ 318 $ 318 $ 577 $ 501

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Weighted average common shares outstanding 380 375 379 367 Incremental shares from assumed conversions — 1 1 1 Adjusted weighted average shares – diluted 380 376 380 368 Diluted earnings per share $ 0.84 $ 0.85 $ 1.52 $ 1.36

New Accounting Guidance

Accounting Guidance Adopted

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Consolidated Statements of 6 Months Ended Changes in Equity Jun. 30, 2021 Equity [Abstract] Consolidated Statements of Note 2. Consolidated Statements of Changes in Equity Changes in Equity The following table provides Edison International's changes in equity for the three and six months ended June 30, 2021:

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document interests ($15.625 - $35.936 per share for preference stock) Noncash stock-based compensation — 10 — — 10 — 10 Balance at June 30, 2021 $ 1,235 $ 6,013 $ (65) $ 8,229 $15,412 $ 1,901 $17,313

The following table provides Edison International's changes in equity for the three and six months ended June 30, 2020:

Noncontrolling Equity Attributable to Edison International Shareholders Interests Accumulated Preferred Other and Preferred Common Comprehensive Retained Preference Total (in millions, except per share amounts) Stock Stock Loss Earnings Subtotal Stock Equity Balance at December 31, 2019 $ — $ 4,990 $ (69) $ 8,382 $13,303 $ 2,193 $15,496 Net income — — — 183 183 30 213 Other comprehensive income — — 2 — 2 — 2 Common stock issued, net of issuance cost — 88 — — 88 — 88 Common stock dividends declared ($0.6375 per share) — — — (232) (232) — (232) Dividends to noncontrolling interests ($0.255 - $0.299 per share for preferred stock; $15.625 - $35.936 per share for preference stock) — — — — — (30) (30) Noncash stock- based compensation — 7 — — 7 — 7 Balance at March 31, 2020 $ — $ 5,085 $ (67) $ 8,333 $13,351 $ 2,193 $15,544 Net income — — — 318 318 30 348 Other comprehensive income — — 2 — 2 — 2 Common stock issued, net of issuance cost — 815 — — 815 — 815 Common stock dividends declared ($0.6375 per share) — — — (241) (241) — (241) Dividends to noncontrolling interests ($0.255 - $0.299 per share for preferred stock; $15.625 - $35.936 per share for preference stock) — — — — — (30) (30)

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Noncash stock- based compensation — 8 — — 8 — 8 Balance at June 30, 2020 $ — $ 5,908 $ (65) $ 8,410 $14,253 $ 2,193 $16,446

The following table provides SCE's changes in equity for the three and six months ended June 30, 2021:

The following table provides SCE's changes in equity for the three and six months ended June 30, 2020:

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Net income — — — — 411 411 Other comprehensive income — — — 1 — 1 Capital contribution from Edison International Parent — — 619 — — 619 Dividends declared on common stock ($0.6185 per share) — — — — (269) (269) Dividends declared on preferred and preference stock ($0.255 - $0.299 per share for preferred stock; $15.625 - $35.936 per share for preference stock) — — — — (30) (30) Noncash stock-based compensation — — 3 — — 3 Balance at June 30, 2020 $ 2,245 $ 2,168 $ 4,829 $ (36) $ 9,575 $18,781

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document 6 Months Ended Variable Interest Entities Jun. 30, 2021 Variable Interest Entities [Abstract] Variable Interest Entities Note 3. Variable Interest Entities

Variable Interest in VIEs that are Consolidated

During the first quarter of 2021, SCE Recovery Funding LLC issued $338 million of securitized bonds in three tranches and used the proceeds to acquire SCE's right, title and interest in and to non-bypassable rates and other charges to be collected from certain existing and future customers in SCE's service territory, associated with the AB 1054 Excluded Capital Expenditures ("Recovery Property"), until the bonds are paid in full and all financing costs have been recovered. The securitized bond is secured by the Recovery Property and cash collections from the non-bypassable rates and other charges are the sole source of funds to satisfy the debt obligation. The bondholders have no recourse to SCE. For further details, see Note 5.

The following table summarizes the impact of SCE Recovery Funding LLC on SCE's and Edison International's consolidated balance sheets.

(in millions) June 30, 2021 Regulatory assets $ 2 Other current assets 6 Regulatory assets: Non-current 329 Current portion of long-term debt (14) Other current liabilities (3) Long-term debt1 (320)

1 The bondholders have no recourse to SCE.

Variable Interest in VIEs that are not Consolidated

Power Purchase Agreements ("PPAs")

Unconsolidated Trusts of SCE

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document The Series G, Series H, Series J, Series K, and Series L Preference Stock and the corresponding trust securities do not have a maturity date. Upon any redemption of any shares of the Series G, Series H, Series J, Series K, or Series L Preference Stock, a corresponding dollar amount of trust securities will be redeemed by the applicable trust. The applicable trust will make distributions at the same rate and on the same dates on the applicable series of trust securities if and when the SCE board of directors declares and makes dividend payments on the related Preference Stock. The applicable trust will use any dividends it receives on the related Preference Stock to make its corresponding distributions on the applicable series of trust securities. If SCE does not make a dividend payment to any of these trusts, SCE would be prohibited from paying dividends on its common stock. SCE has fully and unconditionally guaranteed the payment of the trust securities and trust distributions, if and when SCE pays dividends on the related Preference Stock.

The following table provides a summary of the trusts' income statements:

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document 6 Months Ended Fair Value Measurements Jun. 30, 2021 Fair Value Disclosures [Abstract] Fair Value Measurements Note 4. Fair Value Measurements

Recurring Fair Value Measurements

Assets and liabilities are categorized into a three-level fair value hierarchy based on valuation inputs used to determine fair value.

Level 2 – Edison International's and SCE's Level 2 assets and liabilities include fixed income securities, primarily consisting of U.S. government and agency bonds, municipal bonds and corporate bonds, and over-the-counter derivatives. The fair value of fixed income securities is determined using a market approach by obtaining quoted prices for similar assets and liabilities in active markets and inputs that are observable, either directly or indirectly, for substantially the full term of the instrument.

SCE

The following table sets forth assets and liabilities of SCE that were accounted for at fair value by level within the fair value hierarchy:

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Fixed Income3 519 2,113 — — 2,632 Short-term investments, primarily cash equivalents 447 52 — — 499 Subtotal of nuclear decommissioning trusts4 2,874 2,165 — — 5,039 Total assets 2,913 2,194 120 (18) 5,209 Liabilities at fair value Derivative contracts — 10 12 (22) — Total liabilities — 10 12 (22) — Net assets $ 2,913 $ 2,184 $ 108 $ 4 $ 5,209

1 Represents the netting of assets and liabilities under master netting agreements and cash collateral.

2 Approximately 73% and 71% of SCE's equity investments were in companies located in the United States at June 30, 2021 and December 31, 2020, respectively.

Edison International Parent and Other

SCE Fair Value of Level 3

The following table sets forth a summary of changes in SCE's fair value of Level 3 net derivative assets and liabilities:

1 Due to regulatory mechanisms, SCE's realized and unrealized gains and losses are recorded as regulatory assets and liabilities.

2 There were no material transfers into or out of Level 3 during 2021 and 2020.

The following table sets forth SCE's valuation techniques and significant unobservable inputs used to determine fair value for significant Level 3 assets and liabilities:

Fair Value Significant Weighted (in millions) Valuation Unobservable Range Average Assets Liabilities Technique Input (per MWh) (per MWh) Congestion revenue rights CAISO CRR auction June 30, 2021 $ 77 $ 10 Auction prices prices $(1.39) - $44.46 $ 2.31 CAISO CRR auction December 31, 2020 120 12 Auction prices prices (9.67) - 300.47 2.75

Level 3 Fair Value Uncertainty

For CRRs, increases or decreases in CAISO auction prices would result in higher or lower fair value, respectively, as of June 30, 2021.

Nuclear Decommissioning Trusts

Fair Value of Debt Recorded at Carrying Value

The carrying value and fair value of Edison International's and SCE's long-term debt (including current portion of long-term debt) are as follows:

June 30, 2021 December 31, 2020 Carrying Fair Carrying Fair (in millions) Value1 Value2 Value1 Value2 Edison International $ 23,306 $ 25,527 $ 20,337 $ 23,824

1 Carrying value is net of debt issuance costs.

2 The fair value of Edison International's and SCE's short-term and long-term debt is classified as Level 2.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document 6 Months Ended Debt and Credit Agreements Jun. 30, 2021 Debt Disclosure [Abstract] Debt and Credit Agreements Note 5. Debt and Credit Agreements

Long-Term Debt

In April 2021, SCE issued $400 million of Secured Overnight Financing Rate ("SOFR") plus 0.64% first and refunding mortgage bonds due in 2023, $400 million of SOFR plus 0.83% of first and refunding mortgage bonds due in 2024, $350 million of 0.70% first and refunding mortgage bonds due in 2023 and $700 million of 1.10% first and refunding mortgage bonds due in 2024. The proceeds of these issuances were used to fund the payment of wildfire claims exceeding insurance proceeds and repay commercial paper borrowings that were used to fund the payment of wildfire claims, including amounts paid under the Woolsey Subrogation Settlement.

Senior Secured Recovery Bonds

Credit Agreements and Short-Term Debt

The following table summarizes the status of the credit facilities at June 30, 2021:

(in millions, except for rates) Execution Termination SOFR Outstanding Outstanding Amount date date plus (bps) Use of proceeds Commitment borrowings letters of credit available Edison International Parent Support commercial paper borrowings and general June 2019 May 2025 128 corporate purposes1, 2 $ 1,500 $ 25 $ — $ 1,475 Total Edison International Parent: $ 1,500 $ 25 $ — $ 1,475 SCE Support commercial paper borrowings and general June 2019 May 2025 108 corporate purposes2, 3 $ 3,350 $ 175 $ 120 $ 3,055 Total SCE: $ 3,350 $ 175 $ 120 $ 3,055 Total Edison International: $ 4,850 $ 200 $ 120 $ 4,530

1 At June 30, 2021 Edison International Parent had $25 million outstanding commercial paper, net of discount, at a weighted-average interest rate of 0.32%.

3 At June 30, 2021 SCE had $175 million outstanding commercial paper, net of discount, at a weighted-average interest rate of 0.23%.

Term loan and other short-term debt

In May 2021, SCE borrowed $1.2 billion under a term loan agreement due in May 2022 with a variable interest rate based on SOFR plus 0.60%. SCE used the proceeds to repay all outstanding indebtedness under SCE's 364-day revolving credit agreement and term loan credit agreement, both entered into during March 2020, for $800 million and $148 million, respectively, and to finance certain capital projects related to wildfire mitigation that meet the green loan principles set forth by international loan market organizations including the Loan Syndications and Trading Association.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document 6 Months Ended Derivative Instruments Jun. 30, 2021 Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments Note 6. Derivative Instruments

Commodity Price Risk

Credit and Default Risk

Fair Value of Derivative Instruments

1 Included in "Other current assets" on Edison International's and SCE's consolidated balance sheets.

2 Included in "Other long-term assets" on Edison International's and SCE's consolidated balance sheets.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document 3 At June 30, 2021, SCE received cash collateral of $30 million, of which $26 million was offset against net derivative assets and $4 million was reflected in "Other current liabilities" on the consolidated balance sheets. At December 31, 2020, SCE posted $17 million of cash, of which $4 million was offset against derivative liabilities and $13 million was reflected in "Other current assets" on the consolidated balance sheets.

Financial Statement Impact of Derivative Instruments

The following table summarizes the components of SCE's economic hedging activity:

Three months ended June 30, Six months ended June 30, (in millions) 2021 2020 2021 2020 Realized gains (losses) $ 15 $ (16) $ 127 $ (60) Unrealized gains (losses) 16 (31) 10 (114)

Notional Volumes of Derivative Instruments

The following table summarizes the notional volumes of derivatives used for SCE's economic hedging activities:

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document 6 Months Ended Revenue Jun. 30, 2021 Revenue from Contract with Customer [Abstract] Revenue Note 7. Revenue

SCE's revenue is disaggregated by two revenue sources:

The following table is a summary of SCE's revenue:

Three months ended June 30, 2021 Three months ended June 30, 2020 Cost- Cost- Earning Recovery Total Earning Recovery Total (in millions) Activities Activities Consolidated Activities Activities Consolidated Revenues from contracts with customers1,2 $ 1,703 $ 1,423 $ 3,126 $ 1,658 $ 1,220 $ 2,878 Alternative revenue programs and other operating revenue3 127 53 180 117 (15) 102 Total operating revenue $ 1,830 $ 1,476 $ 3,306 $ 1,775 $ 1,205 $ 2,980

Six months ended June 30, 2021 Six months ended June 30, 2020 Cost- Cost- Earning Recovery Total Earning Recovery Total (in millions) Activities Activities Consolidated Activities Activities Consolidated Revenues from contracts with customers1,2 $ 3,407 $ 2,618 $ 6,025 $ 3,282 $ 1,938 $ 5,220 Alternative revenue programs and other operating revenue3 190 44 234 234 306 540 Total operating revenue $ 3,597 $ 2,662 $ 6,259 $ 3,516 $ 2,244 $ 5,760

1 SCE recorded CPUC revenue based on the 2020 authorized revenue requirements pending the receipt of a 2021 GRC Final Decision. For further information, see Note 1.

3 Includes differences between amounts billed and authorized levels for both the CPUC and FERC.

Subsequent Event

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Effective Tax Rate

The table below provides a reconciliation of income tax expense computed at the federal statutory income tax rate to the income tax provision:

Three months ended June 30, Six months ended June 30, (in millions) 2021 2020 2021 2020 Edison International: Income from operations before income taxes $ 429 $ 352 $ 683 $ 481 Provision for income tax at federal statutory rate of 21% 90 74 143 101 Increase (decrease) in income tax from: State tax, net of federal benefit 18 6 11 (7) Property-related (43) (69) (126) (147) Change related to uncertain tax position1 — — — (15) Other 3 (7) 4 (12) Total income tax expense (benefit) $ 68 $ 4 $ 32 $ (80) Effective tax rate 15.9 % 1.1 % 4.7 % (16.6)% SCE: Income from operations before income taxes $ 461 $ 437 $ 760 $ 611 Provision for income tax at federal statutory rate of 21% 97 92 160 129 Increase (decrease) in income tax from: State tax, net of federal benefit 19 11 15 (1) Property-related (43) (69) (126) (147) Change related to uncertain tax positions1 — (1) — (18) Other 3 (7) 3 (12) Total income tax expense (benefit) $ 76 $ 26 $ 52 $ (49) Effective tax rate 16.5 % 5.9 % 6.8 % (8.0)%

1 Primarily relates to the re-measurement of uncertain tax positions related to the 2010 – 2012 California state tax filings currently under audit.

The CPUC requires flow-through ratemaking treatment for the current tax benefit arising from certain property-related and other temporary differences which reverse over time. Flow-through items reduce current authorized revenue requirements in SCE's rate cases and result in a regulatory asset for recovery of deferred income taxes in future periods. The difference between the authorized amounts as determined in SCE's rate cases, adjusted for balancing and memorandum account activities, and the recorded flow-through items also result in increases or decreases in regulatory assets with a corresponding impact on the effective tax rate to the extent that recorded deferred amounts are expected to be recovered in future rates. For further information, see Note 11.

Tax Disputes

Tax years that remain open for examination by the IRS and the California Franchise Tax Board ("FTB") are 2016 – 2019 and 2013 – 2019, respectively.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Compensation and Benefit 6 Months Ended Plans Jun. 30, 2021 Retirement Benefits [Abstract] Compensation and Benefit Note 9. Compensation and Benefit Plans Plans Pension Plans

Net periodic pension expense components are:

1 Represents the amount of net loss reclassified from other comprehensive loss.

2 Included in "Other income" on Edison International's and SCE's consolidated statement of income.

Postretirement Benefits Other Than Pensions ("PBOP")

Net periodic PBOP expense components for Edison International and SCE are:

1 Included in "Other income" on Edison International's and SCE's consolidated statement of income.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document 6 Months Ended Investments Jun. 30, 2021 Investments [Abstract] Investments Note 10.Investments

Nuclear Decommissioning Trusts

Future decommissioning costs related to SCE's nuclear assets are expected to be funded from independent decommissioning trusts.

The following table sets forth amortized cost and fair value of the trust investments (see Note 4 for a discussion of fair value of the trust investments):

Amortized Cost Fair Value Longest June 30, December 31, June 30, December 31, (in millions) Maturity Dates 2021 2020 2021 2020 Stocks — N/A N/A $ 1,905 $ 1,908 Municipal bonds 2054 $ 896 $ 1,013 1,070 1,218 U.S. government and agency securities 2067 942 740 1,048 864 Corporate bonds 2070 442 460 518 550 Short-term investments and receivables/payables1 One-year 331 281 345 293 Total $ 2,611 $ 2,494 $ 4,886 $ 4,833

The following table summarizes the gains and losses for the trust investments:

Three months ended June 30, Six months ended June 30, (in millions) 2021 2020 2021 2020 Gross realized gains $ 140 $ 75 $ 251 $ 114 Gross realized losses (4) (1) (16) (3) Net unrealized gains (losses) for equity securities 16 271 34 (105)

Due to regulatory mechanisms, changes in assets of the trusts from income or loss items have no impact on operating revenue or earnings. Edison International's Investments

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Regulatory Assets and 6 Months Ended Liabilities Jun. 30, 2021 Regulatory Assets and Liabilities Disclosure [Abstract] Regulatory Assets and Liabilities Note 11. Regulatory Assets and Liabilities

Regulatory Assets

SCE's regulatory assets included on the consolidated balance sheets are:

Regulatory Liabilities

SCE's regulatory liabilities included on the consolidated balance sheets are:

1 Represents the cumulative differences between ARO expenses and amounts collected in rates primarily for the decommissioning of SCE's nuclear generation facilities. Decommissioning costs recovered through rates are primarily placed in nuclear decommissioning trusts. This regulatory liability also represents the deferral of realized and unrealized gains and losses on the nuclear decommissioning trust investments. See Note 10 for further discussion.

Net Regulatory Balancing and Memorandum Accounts

The following table summarizes the significant components of regulatory balancing and memorandum accounts included in the above tables of regulatory assets and liabilities:

June 30, December 31, (in millions) 2021 2020

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Asset (liability) Energy resource recovery account $ (95) $ (89) Portfolio allocation balancing account 543 497 New system generation balancing account (28) (10) Public purpose programs and energy efficiency programs (1,137) (1,130) Base revenue requirement balancing account 665 622 Greenhouse gas auction revenue and low carbon fuel standard revenue (109) (125) FERC balancing accounts 32 12 Wildfire and drought restoration accounts1 396 361 Wildfire-related memorandum accounts2 1,404 1,104 COVID-19-related memorandum accounts 78 176 Customer service re-platform memorandum account3 61 30 Residential uncollectibles balancing account4 157 — Other 83 (60) Asset $ 2,050 $ 1,388

3 CSRP memorandum account was established in the 2018 GRC to track costs for implementation of a new customer service system not currently reflected in SCE's revenue requirements.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Commitments and 6 Months Ended Contingencies Jun. 30, 2021 Commitments and Contingencies Disclosure [Abstract] Commitments and Note 12. Commitments and Contingencies Contingencies Indemnities

Edison International and SCE have various financial and performance guarantees and indemnity agreements which are issued in the normal course of business.

Contingencies

Southern California Wildfires and Mudslides

California has experienced unprecedented weather conditions in recent years and SCE's service territory remains susceptible to additional wildfire activity in 2021 and beyond. The worsening conditions across California increase the likelihood of wildfires, including those where SCE's equipment may be alleged to be associated with the fire's ignition. In response to worsening weather and fuel conditions and increased wildfire activity over the past several years, SCE has developed and is implementing its 2020 – 2022 Wildfire Mitigation Plan ("WMP") to reduce the risk of SCE equipment contributing to the ignition of wildfires. In addition, California has increased its investment in wildfire prevention and fire suppression capabilities.

In addition to the investments SCE is making as part of its WMP, SCE also uses its Public Safety Power Shutoffs ("PSPS") program to proactively de-energize power lines to mitigate the risk of catastrophic wildfires during extreme weather events. SCE initiated PSPS 12 times in 2020 as part of its wildfire mitigation efforts, impacting an aggregate of approximately 140,000 unique customers. In January 2021, the President of the CPUC sent SCE a letter expressing her concern regarding SCE's execution of PSPS in 2020 and notifying SCE that it must implement a PSPS action plan to reduce the impacts of PSPS on the customers and communities it serves. On a risk-informed basis, SCE is making efforts to reduce the frequency and impacts of PSPS in 2021 as compared to 2020, assuming that weather patterns in 2021 are similar to those experienced in 2020. SCE may be subject to mandated changes to, or restrictions on, its operational PSPS practices, regulatory fines and penalties, claims for damages and reputational harm if SCE does not execute PSPS in compliance with applicable rules and regulations or if it is determined that SCE has placed excessive or unreasonable reliance on PSPS. In June 2021, the CPUC issued a final decision which, among other things, will reduce future authorized revenue for the volumetric reductions in electricity sales resulting from PSPS events initiated after June 2021 until the CPUC determines that improvements in the PSPS program have been made.

Edison International and SCE have incurred material losses in connection with the 2017/2018 Wildfire/Mudslide Events, which are described below. SCE's equipment has been, and may further be, alleged to be associated with several wildfires that have originated in Southern California subsequent to 2018. Edison International and SCE expect that any losses incurred in connection with those fires will be covered by insurance, subject to self-insured retentions and co-insurance, and expect that any such losses after insurance recoveries will not be material.

Liability Overview

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document judgment based on a number of assumptions and subjective factors, including, but not limited to: estimates of known and expected claims by third parties based on currently available information, opinions of counsel regarding litigation risk, the status of and developments in the course of litigation, and prior experience litigating and settling wildfire litigation claims. As additional information becomes available, management's estimates and assumptions regarding the causes and financial impact of wildfire events may change.

2019/2020 Wildfires

One of the 2019/2020 Wildfires, the "Saddle Ridge" Fire, originated in Los Angeles county in October 2019 and burned approximately 9,000 acres, destroyed an estimated 19 structures, damaged an estimated 88 structures, and resulted in injuries to 8 individuals and one fatality. An investigation into the cause of the Saddle Ridge Fire is being led by the Los Angeles Fire Department. Based on pending litigation and without considering insurance recoveries, it is reasonably possible that SCE will incur a material loss in connection with the Saddle Ridge Fire, but the range of possible losses that could be incurred cannot be estimated at this time. SCE has not accrued a charge for potential losses relating to the Saddle Ridge Fire.

2017/2018 Wildfire/Mudslide Events

As described below, multiple lawsuits related to the Thomas and Koenigstein Fires and the Woolsey Fire have been initiated against SCE and Edison International. Some of the Thomas and Koenigstein Fires lawsuits claim that SCE and Edison International have responsibility for the damages caused by debris flows and flooding in Montecito and surrounding areas in January 2018 (the "Montecito Mudslides") based on a theory alleging that SCE has responsibility for the Thomas and/or Koenigstein Fires and further alleging that the Thomas and/or Koenigstein Fires proximately caused the Montecito Mudslides. According to Santa Barbara County initial reports, the Montecito Mudslides destroyed an estimated 135 structures, damaged an estimated 324 structures, and resulted in 21 confirmed fatalities, with two additional fatalities presumed. Based on information available to SCE and consideration of the risks associated with litigation, Edison International and SCE expect to incur a material loss in connection with the remaining alleged and potential claims related to the 2017/2018 Wildfire/Mudslide Events. The 2017/2018 Wildfire/Mudslide Events are discussed further below.

As of June 30, 2021, Edison International and SCE had paid $4.7 billion in settlements, had $141 million to be paid under executed settlements and had $1.4 billion of estimated losses for remaining alleged and potential claims reflected on their consolidated balance sheets related to the 2017/2018 Wildfire/Mudslide Events. As of the same date, Edison International and SCE had assets for expected recoveries through FERC electric rates of $94 million on their consolidated balance sheets and had exhausted expected insurance recoveries related to the 2017/2018 Wildfire/Mudslide Events. The estimated losses for the 2017/2018 Wildfire/Mudslide Events do not include an estimate of any potential fines or penalties that could be levied against SCE in connection with the 2017/ 2018 Wildfire/Mudslide Events. Edison International and SCE are currently unable to reasonably estimate the magnitude of any such fines or penalties, or the associated timing if they were to be imposed. Estimated losses for the 2017/2018 Wildfire/Mudslide Events litigation are based on a number of assumptions and are subject to change as additional information becomes available. Actual losses incurred may be higher or lower than estimated based on several factors, including: the uncertainty as to the legal and factual determinations to be made during litigation, including uncertainty as to the contributing causes of the 2017/2018 Wildfire/Mudslide Events, the complexities associated with fires that merge, whether inverse condemnation will be held applicable to SCE with respect to damages caused by the Montecito Mudslides, uncertainties related to the litigation processes, the uncertainty in estimating damages that may be alleged, and the uncertainty as to how these factors impact future settlements.

External Investigations and Internal Review

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document The VCFD and CAL FIRE have jointly issued reports concerning their findings regarding the causes of the Thomas Fire and the Koenigstein Fire. The reports did not address the causes of the Montecito Mudslides. SCE has also received a non-final redacted draft of a report from the VCFD regarding Woolsey Fire (the "Redacted Woolsey Report"). SCE anticipates that the VCFD will release its final report regarding the Woolsey Fire in 2021. The VCFD and CAL FIRE findings do not determine legal causation of or assign legal liability for the Thomas, Koenigstein or Woolsey Fires; final determinations of legal causation and liability would only be made during lengthy and complex litigation.

SCE could be subject to material fines, penalties, or restitution for failure to comply with applicable laws and regulations.

Thomas Fire

Koenigstein Fire

Montecito Mudslides

Woolsey Fire

Litigation

As of July 22, 2021, SCE was aware of at least currently pending 278 lawsuits, representing approximately 3,000 plaintiffs, related to the Thomas and Koenigstein Fires naming SCE as a defendant. One hundred forty-eight of the 278 lawsuits also name Edison International as a defendant based on its ownership and alleged control of SCE. At least four of the lawsuits were filed as purported class actions. The lawsuits, which have been filed in the superior courts of Ventura, Santa Barbara and Los Angeles Counties allege, among other things, negligence, inverse condemnation, trespass, private nuisance, and violations of the public utilities and health and safety codes. An initial trial for a limited number of plaintiffs, sometimes

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document referred to as a bellwether trial, on certain fire only matters is currently scheduled for October 18, 2021. The bellwether trial date may be further delayed to provide SCE and certain of the individual plaintiffs in the Thomas and Koenigstein Fire litigation the opportunity to pursue settlements of claims under a program adopted to promote an efficient and orderly settlement process. Some individual plaintiffs have, and others may, opt to pursue trial outside of the settlement program.

Seventy of the 278 pending lawsuits mentioned in the paragraph above allege that SCE has responsibility for the Thomas and/or Koenigstein Fires and that the Thomas and/ or Koenigstein Fires proximately caused the Montecito Mudslides, resulting in the plaintiffs' claimed damages. Forty-Four of the 70 Montecito Mudslides lawsuits also name Edison International as a defendant based on its ownership and alleged control of SCE. In addition to other causes of action, some of the Montecito Mudslides lawsuits also allege personal injury and wrongful death. A bellwether jury trial previously scheduled for October 12, 2020 was vacated due to the wide-spread disruption being caused by the COVID-19 pandemic.

In January 2019, two separate derivative lawsuits alleging breach of fiduciary duties, securities fraud, misleading proxy statements, unjust enrichment, and related claims were filed in federal court against certain current and former members of the Boards of Directors and certain current and former officers of Edison International and SCE. Edison International and SCE are named as nominal defendants in those actions. The derivative lawsuits generally allege that the individual defendants breached their fiduciary duties and made misleading statements or allowed misleading statements to be made (i) between March 21, 2014 and August 10, 2015, with respect to certain ex parte communications between SCE and CPUC decisionmakers concerning the settlement of the San Onofre Order Instituting Investigation proceeding (the "San Onofre OII") and (ii) from February 23, 2016 to the present, concerning compliance with applicable laws and regulations concerning electric system maintenance and operations related to wildfire risks. The lawsuits generally allege that these breaches of duty and misstatements led to substantial liability and damage resulting from the disclosure of SCE's ex parte communications in connection with the San Onofre OII settlement, and from the 2017/2018 Wildfire/Mudslide Events. The lawsuits are currently stayed.

Settlements

In the fourth quarter of 2019, SCE paid $360 million to a number of local public entities to resolve those parties' collective claims arising from the 2017/2018 Wildfire/ Mudslide Events (the "Local Public Entity Settlements").

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document SCE continues to explore reasonable settlement opportunities with other plaintiffs in the outstanding 2017/2018 Wildfire/Mudslide Events litigation.

Loss Estimates for Third Party Claims and Potential Recoveries from Insurance and through Electric Rates

(in millions) Balance at December 31, 20201 $ 4,383 Amounts paid (2,852) Balance at June 30, 20212 $ 1,531

(in millions) Balance at December 31, 2020 $ 708 Insurance recoveries (708) Balance at June 30, 2021 $ —

Recovery of SCE's actual losses realized in connection with the 2017/2018 Wildfire/Mudslide Events in excess of available insurance is subject to approval by regulators. Under accounting standards for rate-regulated enterprises, SCE defers costs as regulatory assets when it concludes that such costs are probable of future recovery in electric rates. SCE utilizes objectively determinable evidence to form its view on probability of future recovery. The only directly comparable precedent in which a California investor-owned utility has sought recovery for uninsured wildfire-related costs is SDG&E's requests for cost recovery related to 2007 wildfire activity, where the FERC allowed recovery of all FERC-jurisdictional wildfire-related costs while the CPUC rejected recovery of all CPUC-jurisdictional wildfire-related costs based on a determination that SDG&E did not meet the CPUC's prudency standard. As a result, while SCE does not agree with the CPUC's decision, it believes that the CPUC's interpretation and application of the prudency standard to SDG&E creates substantial uncertainty regarding how that standard will be applied to an investor- owned utility in future wildfire cost-recovery proceedings for fires ignited prior to July 12, 2019. SCE will continue to evaluate the probability of recovery based on available evidence, including judicial, legislative and regulatory decisions, including any CPUC decisions illustrating the interpretation and/or application of the prudency standard when making determinations regarding recovery of uninsured wildfire-related costs. While the CPUC has not made a determination regarding SCE's prudency relative to any of the 2017/2018 Wildfire/Mudslide Events, SCE is unable to conclude, at this time, that uninsured CPUC-jurisdictional wildfire-related costs are probable of recovery through electric rates. SCE would record a regulatory asset at the time it obtains sufficient information to support a conclusion that recovery is probable. SCE will seek CPUC-jurisdictional rate recovery of prudently-incurred, actual losses realized in connection with the 2017/2018 Wildfire/Mudslide Events in excess of available insurance.

In July 2019, SCE filed a CEMA application with the CPUC to seek recovery of, among other things, approximately $60 million of capital expenditures and capital related expenses incurred to restore service to customers and to repair, replace and restore buildings and SCE's facilities damaged or destroyed as a result of six 2017 fires, primarily the Thomas and Koenigstein Fires. In July 2021, the CPUC issued a proposed decision which, if adopted, would deny without prejudice SCE's application to recover a revenue requirement for all six 2017 wildfires on the basis that SCE did not demonstrate that it was prudent in relation to the Thomas and Rye fires. CAL FIRE has determined that the Thomas and Rye fires were caused by SCE equipment. While the proposed decision, if adopted, would allow SCE to submit additional applications with the CPUC to recover those costs, SCE must segregate the restoration costs attributable to each of the six fires in any future applications for recovery. The proposed decision also directs that SCE must prove it was prudent in relation to the Thomas and Rye fires in any future application for recovery of those costs and must file any such application within 18 months of a final decision. SCE challenged some aspects of the proposed decision, including the application of the prudency standard with regards to fires in a CEMA proceeding and the 18-month deadline to file an application if the prudency standard is applied. As of June 30, 2021, SCE has $189 million in assets recorded in property, plant and equipment in relation to restoration costs related to the 2017/2018 Wildfire/Mudslide Events which may not be recoverable. These assets would be impaired if the restoration costs are permanently disallowed by the CPUC in future cost recovery proceedings. SCE continues to incur costs for reconstructing its system and restoring service to structures that were damaged or destroyed by the Thomas, Koenigstein and Woolsey Fires and plans to file additional applications with the CPUC to recover such costs. See "Recovery of Wildfire-Related Costs" below.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Through the operation of its FERC Formula Rate, and based upon the precedent established in SDG&E's recovery of FERC-jurisdictional wildfire-related costs, SCE believes it is probable it will recover its FERC-jurisdictional wildfire and mudslide related costs and has recorded total expected recoveries of $233 million within the FERC balancing account. This was the FERC portion of the estimated losses accrued. As of June 30, 2021, collections have reduced the regulatory assets remaining in the FERC balancing account to $94 million.

Current Wildfire Insurance Coverage

Based on policies currently in effect, SCE's 2021 wildfire insurance expense is expected to be approximately $425 million prior to any regulatory deferrals. In July 2021, the CPUC issued a proposed decision in track 1 of the 2021 GRC proceeding which, if adopted, would authorize $460 million for wildfire insurance expense for 2021 and a one-way balancing account to require any overcollection to be returned to customers. Under the proposed decision, SCE would continue to track incremental wildfire insurance expenses above authorized amounts in its WEMA and recovery of incremental amounts would be subject to reasonableness review.

Recovery of Wildfire-Related Costs

Pre-AB 1054 Cost Recovery

2019 Wildfire Legislation

AB 1054 Prudency Standard

Under AB 1054, the CPUC must apply a new standard when assessing the prudency of a utility in connection with a request for recovery of wildfire costs for wildfires ignited after July 12, 2019. Under AB 1054, the CPUC is required to find a utility to be prudent if the utility's conduct related to the ignition was consistent with actions that a reasonable utility would have undertaken under similar circumstances, at the relevant point in time, and based on the information available at that time. Prudent conduct under the AB 1054 standard is not limited to the optimum practice, method, or act to the exclusion of others, but rather encompasses a spectrum of possible practices, methods, or acts consistent with utility system needs, the interest of the ratepayers, and the requirements of governmental agencies. AB 1054 also provides that the CPUC may determine that wildfire costs may be recoverable, in whole or in part, by taking into account factors within and outside the utility's control, including humidity, temperature, and winds. Further, utilities with a valid safety certification will be presumed to have acted prudently related to a wildfire ignition unless a party in the cost recovery proceeding creates serious doubt as to the reasonableness of the utility's conduct, at which time, the burden shifts back to the utility to prove its conduct was prudent. If a utility does not have a valid safety certification, it will have the burden to prove, based on a preponderance of evidence, that its conduct was prudent. The new prudency standard will survive the termination of the Wildfire Insurance Fund.

Wildfire Insurance Fund

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document September 2019 and is available for claims related to wildfires ignited after July 12, 2019 that are determined by the responsible government investigatory agency to have been caused by a utility.

Reimbursement from Wildfire Insurance Fund and AB 1054 Liability Cap

As of June 30, 2021, the participating investor-owned utilities have not sought reimbursement of wildfire claims from the Wildfire Insurance Fund.

Safety Certification and Wildfire Mitigation Plan

Capital Expenditure Requirement

Under AB 1054, approximately $1.6 billion of spending by SCE on wildfire risk mitigation capital expenditures made after August 1, 2019, cannot be included in the equity portion of SCE's rate base ("AB 1054 Excluded Capital Expenditures"). SCE can apply for irrevocable orders from the CPUC to finance these AB 1054 Excluded Capital Expenditures, including through the issuance of securitized bonds, and can recover any prudently incurred financing costs. As of June 30, 2021, SCE had spent all of the approximately $1.6 billion in AB 1054 Excluded Capital Expenditures.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document In June 2021, SCE filed an application with the CPUC requesting to finance up to $1.0 billion of wildfire mitigation and customer uncollectible costs and associated financing costs through the issuance of securitized bonds. The $1.0 billion request included approximately $518 million of AB 1054 Excluded Capital Expenditures.

SCE expects to seek additional irrevocable orders from the CPUC to finance the remaining AB 1054 Excluded Capital Expenditures.

Environmental Remediation

Nuclear Insurance

Spent Nuclear Fuel

In November 2019, SCE filed a new complaint against the DOE to recover damages incurred from January 1, 2017 through July 31, 2018.

Upstream Lighting Program

From 2017 – 2019, SCE administered the Upstream Lighting Program, part of a statewide program administered by investor-owned utilities that offered discounted energy efficient light bulbs to customers through incentives to lighting manufacturers. The CPUC began investigating the programs administered by the investor-owned utilities based on reports that investor-owned utilities, including SCE, shipped a significant number of bulbs under the program that could not be tracked to customers. Beginning in January 2020, the CPUC has sought comments on remedies related to SCE's implementation of the Upstream Lighting Program from 2017 through 2019 program years. SCE undertook an independent investigation of bulbs shipped to retailers categorized as grocery and discount businesses during the 2017 to 2019 program years and found that there were overstocking of bulbs and program management shortcomings. Incentives paid to manufacturers for bulbs shipped to grocery and

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document discount businesses during the relevant period, including those that were sold to customers, were approximately $91 million. In addition, SCE received incentives related to the bulbs shipped to grocery and discount businesses through an energy efficiency incentive mechanism ("ESPI Mechanism") of approximately $3.5 million related to the bulbs shipped in 2017 and 2018. SCE also expects to receive incentives of approximately $1.3 million under the ESPI Mechanism in 2022 related to bulbs shipped to grocery and discount businesses in 2018 and 2019.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document 6 Months Ended Equity Jun. 30, 2021 Stockholders' Equity Note [Abstract] Equity Note 13. Equity

Common Stock Issuances

Equity Contributions

Preferred Stock Issuance

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document in the criteria rating agencies use that would have adverse effects on the equity credit attributed by rating agencies to the Series A preferred stock.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Accumulated Other 6 Months Ended Comprehensive Loss Jun. 30, 2021 Equity [Abstract] Accumulated Other Note 14. Accumulated Other Comprehensive Loss Comprehensive Loss Edison International's accumulated other comprehensive loss, net of tax, consist of: Three months ended June 30, Six months ended June 30, (in millions) 2021 2020 2021 2020 Beginning balance $ (67) $ (67) $ (69) $ (69) Pension and PBOP – net loss: Reclassified from accumulated other comprehensive loss1 2 2 4 4 Change 2 2 4 4 Ending Balance $ (65) $ (65) $ (65) $ (65)

1 These items are included in the computation of net periodic pension and PBOP Plan expense. See Note 9 for additional information.

SCE's accumulated other comprehensive loss, net of tax, consists of: Three months ended June 30, Six months ended June 30, (in millions) 2021 2020 2021 2020 Beginning balance $ (39) $ (37) $ (41) $ (39) Pension and PBOP – net loss: Reclassified from accumulated other comprehensive loss1 1 1 3 3 Change 1 1 3 3 Ending Balance $ (38) $ (36) $ (38) $ (36)

1 These items are included in the computation of net periodic pension and PBOP Plan expense. See Note 9 for additional information.

Note 15. Other Income

Other income net of expenses is as follows:

1 Includes $12 million unrealized gains on investment in Proterra. For further details, see Note 10. Investments.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Supplemental Cash Flows 6 Months Ended Information Jun. 30, 2021 Supplemental Cash Flow Elements [Abstract] Supplemental Cash Flows Note 16. Supplemental Cash Flows Information Information Supplemental cash flows information is:

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document 6 Months Ended Related-Party Transactions Jun. 30, 2021 Related Party Transactions [Abstract] Related-Party Transactions Note 17. Related-Party Transactions For the three and six months ended June 30, 2021, SCE entered into wildfire liability insurance contracts with premiums of approximately $160 million payable to Edison Insurance Services, Inc. ("EIS"), a wholly-owned subsidiary of Edison International. For the three and six months ended June 30, 2020, SCE entered into wildfire liability insurance contracts with premiums payable to EIS of $176 million. The related-party transactions included in SCE's consolidated balance sheets for wildfire-related insurance purchased from EIS and related expected insurance recoveries were as follows:

June 30, December 31, (in millions) 2021 2020 Current insurance receivable due from affiliate $ — $ 268 Prepaid insurance1 — 56

1 Reflected in "Prepaid expenses" on SCE's consolidated balance sheets.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Summary of Significant 6 Months Ended Accounting Policies (Policies) Jun. 30, 2021 Accounting Policies [Abstract] Organization and Basis of Organization and Basis of Presentation Presentation Edison International is the parent holding company of Southern California Edison Company ("SCE") and Edison Energy Group, Inc. ("Edison Energy Group"). SCE is an investor-owned public utility primarily engaged in the business of supplying and delivering electricity to an approximately 50,000 square mile area of Southern California. Edison Energy Group is an indirect wholly-owned subsidiary of Edison International and a holding company for Edison Energy, LLC ("Edison Energy") which is engaged in the competitive business of providing data driven energy solutions to commercial, institutional and industrial customers. Edison Energy's business activities are currently not material to report as a separate business segment. These combined notes to the consolidated financial statements apply to both Edison International and SCE unless otherwise described. Edison International's consolidated financial statements include the accounts of Edison International, SCE, and other wholly owned and controlled subsidiaries. References to Edison International refer to the consolidated group of Edison International and its subsidiaries. References to "Edison International Parent and Other" refer to Edison International Parent and its competitive subsidiaries and "Edison International Parent" refer to Edison International on a stand-alone basis, not consolidated with its subsidiaries. SCE's consolidated financial statements include the accounts of SCE, its wholly owned and controlled subsidiaries and a variable interest entity of which SCE is the primary beneficiary, SCE Recovery Funding LLC. All intercompany transactions have been eliminated from the consolidated financial statements.

The December 31, 2020 financial statement data was derived from audited financial statements but does not include all disclosures required by GAAP.

Cash and Cash Equivalents Cash, Cash Equivalents and Restricted Cash

Edison International SCE June 30, December 31, June 30, December 31, (in millions) 2021 2020 2021 2020 Money market funds $ 47 $ 62 $ 20 $ 38

Edison International SCE June 30, December 31, June 30, December 31, (in millions) 2021 2020 2021 2020 Book balances reclassified to accounts payable $ 61 $ 69 $ 61 $ 69

The following table sets forth the cash, cash equivalents and restricted cash included in the consolidated statements of cash flows:

1 Reflected in "Other current assets" on Edison International's and SCE's consolidated balance sheets.

Allowance for Uncollectible Allowance for Uncollectible Accounts Accounts The allowance for uncollectible accounts is recorded based on SCE's estimate of expected credit losses and adjusted over the life of the receivables as needed. Since the customer base of SCE is concentrated in Southern California and exposes SCE to a homogeneous set of economic conditions, the allowance is measured on a collective

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document basis on the historical amounts written-off, assessment of customer collectability and current economic trends, including unemployment rates and any likelihood of recession for the region. At June 30, 2021, this included the estimated impacts of the COVID-19 pandemic.

The following tables set forth the changes in allowance for uncollectible accounts for SCE:

Regulatory Proceedings

2021 General Rate Case

Employee Stock Purchase Plan Employee Stock Purchase Plan

Earnings Per Share Earnings Per Share

EPS attributable to Edison International common shareholders was computed as follows:

New Accounting Guidance New Accounting Guidance

Accounting Guidance Adopted

Edison International SCE June 30, December 31, June 30, December 31, (in millions) 2021 2020 2021 2020 Money market funds $ 47 $ 62 $ 20 $ 38

Edison International SCE June 30, December 31, June 30, December 31, (in millions) 2021 2020 2021 2020 Book balances reclassified to accounts payable $ 61 $ 69 $ 61 $ 69 Cash, Cash Equivalents and Restricted Cash June 30, December 31, (in millions) 2021 2020 Edison International: Cash and cash equivalents $ 84 $ 87 Short-term restricted cash1 1 2 Total cash, cash equivalents, and restricted cash $ 85 $ 89 SCE: Cash and cash equivalents $ 51 $ 55 Short-term restricted cash1 — 1 Total cash, cash equivalents, and restricted cash $ 51 $ 56

1 Reflected in "Other current assets" on Edison International's and SCE's consolidated balance sheets.

Changes in Allowance for Uncollectible Accounts Three months ended Three months ended June 30, 2021 June 30, 2020 (in millions) Customers All others Total Customers All others Total Beginning balance $ 210 $ 16 $ 226 $ 47 $ 13 $ 60 Plus: current period provision for uncollectible accounts Included in operation and maintenance expenses 12 3 15 12 5 17 Deferred to regulatory assets 32 — 32 21 — 21 Less: write-offs, net of recoveries — 3 3 5 3 8 Ending balance $ 254 $ 16 $ 270 $ 75 $ 15 $ 90

Six months ended Six months ended June 30, 2021 June 30, 2020 (in millions) Customers All others Total Customers All others Total Beginning balance $ 175 $ 13 $ 188 $ 35 $ 14 $ 49 Plus: current period provision for uncollectible accounts Included in operation and maintenance expenses 18 7 25 28 7 35 Deferred to regulatory assets 66 — 66 21 — 21 Less: write-offs, net of recoveries 5 4 9 9 6 15 Ending balance $ 254 $ 16 $ 270 $ 75 $ 15 $ 90 EPS Attributable to Edison International Common Three months ended June 30, Six months ended June 30, Shareholders (in millions, except per-share amounts) 2021 2020 2021 2020 Basic earnings per share: Net income attributable to common shareholders $ 318 $ 318 $ 577 $ 501 Participating securities dividends — — — — Net income available to common shareholders $ 318 $ 318 $ 577 $ 501 Weighted average common shares outstanding 380 375 379 367 Basic earnings per share $ 0.84 $ 0.85 $ 1.52 $ 1.37 Diluted earnings per share: Net income attributable to common shareholders $ 318 $ 318 $ 577 $ 501 Participating securities dividends — — — — Net income available to common shareholders $ 318 $ 318 $ 577 $ 501 Income impact of assumed conversions — — — — Net income available to common shareholders and assumed conversions $ 318 $ 318 $ 577 $ 501 Weighted average common shares outstanding 380 375 379 367 Incremental shares from assumed conversions — 1 1 1

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Adjusted weighted average shares – diluted 380 376 380 368 Diluted earnings per share $ 0.84 $ 0.85 $ 1.52 $ 1.36

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Consolidated Statements of 6 Months Ended Changes in Equity (Tables) Jun. 30, 2021 Schedule of Capitalization, Equity [Line Items] Schedule of Changes in Equity The following table provides Edison International's changes in equity for the three and six months ended June 30, 2021:

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document $35.936 per share for preference stock) Noncash stock-based compensation — 10 — — 10 — 10 Balance at June 30, 2021 $ 1,235 $ 6,013 $ (65) $ 8,229 $15,412 $ 1,901 $17,313

The following table provides Edison International's changes in equity for the three and six months ended June 30, 2020:

Noncontrolling Equity Attributable to Edison International Shareholders Interests Accumulated Preferred Other and Preferred Common Comprehensive Retained Preference Total (in millions, except per share amounts) Stock Stock Loss Earnings Subtotal Stock Equity Balance at December 31, 2019 $ — $ 4,990 $ (69) $ 8,382 $13,303 $ 2,193 $15,496 Net income — — — 183 183 30 213 Other comprehensive income — — 2 — 2 — 2 Common stock issued, net of issuance cost — 88 — — 88 — 88 Common stock dividends declared ($0.6375 per share) — — — (232) (232) — (232) Dividends to noncontrolling interests ($0.255 - $0.299 per share for preferred stock; $15.625 - $35.936 per share for preference stock) — — — — — (30) (30) Noncash stock- based compensation — 7 — — 7 — 7 Balance at March 31, 2020 $ — $ 5,085 $ (67) $ 8,333 $13,351 $ 2,193 $15,544 Net income — — — 318 318 30 348 Other comprehensive income — — 2 — 2 — 2 Common stock issued, net of issuance cost — 815 — — 815 — 815 Common stock dividends declared ($0.6375 per share) — — — (241) (241) — (241) Dividends to noncontrolling interests ($0.255 - $0.299 per share for preferred stock; $15.625 - $35.936 per share for preference stock) — — — — — (30) (30)

SCE Schedule of Capitalization, Equity [Line Items] Schedule of Changes in Equity The following table provides SCE's changes in equity for the three and six months ended June 30, 2021:

The following table provides SCE's changes in equity for the three and six months ended June 30, 2020:

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Stock-based compensation — — (5) — — (5) Noncash stock-based compensation — — 4 — (1) 3 Balance at March 31, 2020 $ 2,245 $ 2,168 $ 4,207 $ (37) $ 9,463 $18,046 Net income — — — — 411 411 Other comprehensive income — — — 1 — 1 Capital contribution from Edison International Parent — — 619 — — 619 Dividends declared on common stock ($0.6185 per share) — — — — (269) (269) Dividends declared on preferred and preference stock ($0.255 - $0.299 per share for preferred stock; $15.625 - $35.936 per share for preference stock) — — — — (30) (30) Noncash stock-based compensation — — 3 — — 3 Balance at June 30, 2020 $ 2,245 $ 2,168 $ 4,829 $ (36) $ 9,575 $18,781

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Variable Interest Entities 6 Months Ended (Tables) Jun. 30, 2021 Variable Interest Entities [Abstract] Summary of the impact SCE Recovery Funding LLC on (in millions) June 30, 2021 SCE's consolidated Balance Regulatory assets $ 2 Other current assets 6 Sheets Regulatory assets: Non-current 329 Current portion of long-term debt (14) Other current liabilities (3) Long-term debt1 (320)

1 The bondholders have no recourse to SCE.

Summary of the Trusts' Income Statements Three months ended June 30, (in millions) Trust II Trust III Trust IV Trust V Trust VI 2021 Dividend income $ 5 $ 4 $ 5 $ 4 $ 6 Dividend distributions 5 4 5 4 6 2020 Dividend income $ 5 $ 4 $ 5 $ 4 $ 6 Dividend distributions 5 4 5 4 6

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Fair Value Measurements 6 Months Ended (Tables) Jun. 30, 2021 Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Carrying Amounts and Fair Values of Long-term Debt, June 30, 2021 December 31, 2020 Including Current Portion Carrying Fair Carrying Fair (in millions) Value1 Value2 Value1 Value2 Edison International $ 23,306 $ 25,527 $ 20,337 $ 23,824 SCE 20,171 22,156 17,204 20,365

1 Carrying value is net of debt issuance costs.

2 The fair value of Edison International's and SCE's short-term and long-term debt is classified as Level 2.

SCE Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value by Level within the Fair Value Hierarchy June 30, 2021 Netting and (in millions) Level 1 Level 2 Level 3 Collateral1 Total Assets at fair value Derivative contracts $ — $ 55 $ 77 $ (43) $ 89 Money market funds and other 20 23 — — 43 Nuclear decommissioning trusts: Stocks2 1,905 — — — 1,905 Fixed Income3 891 1,745 — — 2,636 Short-term investments, primarily cash equivalents 253 166 — — 419 Subtotal of nuclear decommissioning trusts4 3,049 1,911 — — 4,960 Total assets 3,069 1,989 77 (43) 5,092 Liabilities at fair value Derivative contracts — 7 10 (17) — Total liabilities — 7 10 (17) — Net assets $ 3,069 $ 1,982 $ 67 $ (26) $ 5,092

1 Represents the netting of assets and liabilities under master netting agreements and cash collateral.

2 Approximately 73% and 71% of SCE's equity investments were in companies located in the United States at June 30, 2021 and December 31, 2020, respectively.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Summary of Changes in Fair Value of Level 3 Net Three months ended Six months ended Derivative Assets and June 30, June 30, (in millions) 2021 2020 2021 2020 Liabilities Fair value of net assets at beginning of period $ 91 $ 52 $ 108 $ 78 Purchases — — — 8 Sales (1) (3) (1) (4) Settlements (2) (6) (16) (26) Total realized/unrealized losses 1,2 (21) (9) (24) (22) Fair value of net assets at end of period $ 67 $ 34 $ 67 $ 34

1 Due to regulatory mechanisms, SCE's realized and unrealized gains and losses are recorded as regulatory assets and liabilities.

2 There were no material transfers into or out of Level 3 during 2021 and 2020.

Valuation Techniques and Significant Unobservable Fair Value Significant Weighted Inputs Used to Determine Fair (in millions) Valuation Unobservable Range Average Assets Liabilities Technique Input (per MWh) (per MWh) Value for Level 3 Assets and Congestion revenue rights Liabilities CAISO CRR auction June 30, 2021 $ 77 $ 10 Auction prices prices $(1.39) - $44.46 $ 2.31 CAISO CRR auction December 31, 2020 120 12 Auction prices prices (9.67) - 300.47 2.75

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Debt and Credit Agreements 6 Months Ended (Tables) Jun. 30, 2021 Debt Disclosure [Abstract] Summary for Status of Credit Facilities (in millions, except for rates) Execution Termination SOFR Outstanding Outstanding Amount date date plus (bps) Use of proceeds Commitment borrowings letters of credit available Edison International Parent Support commercial paper borrowings and general June 2019 May 2025 128 corporate purposes1, 2 $ 1,500 $ 25 $ — $ 1,475 Total Edison International Parent: $ 1,500 $ 25 $ — $ 1,475 SCE Support commercial paper borrowings and general June 2019 May 2025 108 corporate purposes2, 3 $ 3,350 $ 175 $ 120 $ 3,055 Total SCE: $ 3,350 $ 175 $ 120 $ 3,055 Total Edison International: $ 4,850 $ 200 $ 120 $ 4,530

1 At June 30, 2021 Edison International Parent had $25 million outstanding commercial paper, net of discount, at a weighted-average interest rate of 0.32%.

3 At June 30, 2021 SCE had $175 million outstanding commercial paper, net of discount, at a weighted-average interest rate of 0.23%.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Derivative Instruments 6 Months Ended (Tables) - SCE Jun. 30, 2021 Derivative Instruments and Hedging Activities Disclosures [Line Items] Schedule of Derivative Assets in Statement of Financial Position, Fair Value June 30, 2021 Derivative Assets Derivative Liabilities (in millions) Short-Term1 Long-Term2 Subtotal Short-Term Long-Term Subtotal Net Assets Commodity derivative contracts Gross amounts recognized $ 115 $ 16 $ 131 $ 12 $ 4 $ 16 $ 115 Gross amounts offset in the consolidated balance sheets (12) (4) (16) (12) (4) (16) — Cash collateral posted3 (26) — (26) — — — (26) Net amounts presented in the consolidated balance sheets $ 77 $ 12 $ 89 $ — $ — $ — $ 89

1 Included in "Other current assets" on Edison International's and SCE's consolidated balance sheets.

2 Included in "Other long-term assets" on Edison International's and SCE's consolidated balance sheets.

Components of Economic Hedging Activity Three months ended June 30, Six months ended June 30, (in millions) 2021 2020 2021 2020 Realized gains (losses) $ 15 $ (16) $ 127 $ (60) Unrealized gains (losses) 16 (31) 10 (114) Notional Volumes of Derivative Instruments

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document 6 Months Ended Revenue (Tables) Jun. 30, 2021 Revenue from Contract with Customer [Abstract] Summary of Revenue

Three months ended June 30, 2021 Three months ended June 30, 2020 Cost- Cost- Earning Recovery Total Earning Recovery Total (in millions) Activities Activities Consolidated Activities Activities Consolidated Revenues from contracts with customers1,2 $ 1,703 $ 1,423 $ 3,126 $ 1,658 $ 1,220 $ 2,878 Alternative revenue programs and other operating revenue3 127 53 180 117 (15) 102 Total operating revenue $ 1,830 $ 1,476 $ 3,306 $ 1,775 $ 1,205 $ 2,980

Six months ended June 30, 2021 Six months ended June 30, 2020 Cost- Cost- Earning Recovery Total Earning Recovery Total (in millions) Activities Activities Consolidated Activities Activities Consolidated Revenues from contracts with customers1,2 $ 3,407 $ 2,618 $ 6,025 $ 3,282 $ 1,938 $ 5,220 Alternative revenue programs and other operating revenue3 190 44 234 234 306 540 Total operating revenue $ 3,597 $ 2,662 $ 6,259 $ 3,516 $ 2,244 $ 5,760

1 SCE recorded CPUC revenue based on the 2020 authorized revenue requirements pending the receipt of a 2021 GRC Final Decision. For further information, see Note 1.

3 Includes differences between amounts billed and authorized levels for both the CPUC and FERC.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document 6 Months Ended Income Taxes (Tables) Jun. 30, 2021 Income Tax Disclosure [Abstract] Reconciliation of Income Tax Expense Three months ended June 30, Six months ended June 30, (in millions) 2021 2020 2021 2020 Edison International: Income from operations before income taxes $ 429 $ 352 $ 683 $ 481 Provision for income tax at federal statutory rate of 21% 90 74 143 101 Increase (decrease) in income tax from: State tax, net of federal benefit 18 6 11 (7) Property-related (43) (69) (126) (147) Change related to uncertain tax position1 — — — (15) Other 3 (7) 4 (12) Total income tax expense (benefit) $ 68 $ 4 $ 32 $ (80) Effective tax rate 15.9 % 1.1 % 4.7 % (16.6)% SCE: Income from operations before income taxes $ 461 $ 437 $ 760 $ 611 Provision for income tax at federal statutory rate of 21% 97 92 160 129 Increase (decrease) in income tax from: State tax, net of federal benefit 19 11 15 (1) Property-related (43) (69) (126) (147) Change related to uncertain tax positions1 — (1) — (18) Other 3 (7) 3 (12) Total income tax expense (benefit) $ 76 $ 26 $ 52 $ (49) Effective tax rate 16.5 % 5.9 % 6.8 % (8.0)%

1 Primarily relates to the re-measurement of uncertain tax positions related to the 2010 – 2012 California state tax filings currently under audit.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Compensation and Benefit 6 Months Ended Plans (Tables) Jun. 30, 2021 Pension Plans Pension and Other Postretirement Benefits Expense Components for Plans Three months ended Six months ended June 30, June 30, (in millions) 2021 2020 2021 2020 Edison International: Service cost $ 34 $ 31 $ 68 $ 62 Non-service cost (benefit) Interest cost 26 30 52 61 Expected return on plan assets (56) (54) (112) (108) Amortization of prior service cost — 1 — 1 Amortization of net loss1 3 3 6 6 Regulatory adjustment 4 2 8 4 Total non-service benefit2 $ (23) $ (18) $ (46) $ (36) Total expense recognized $ 11 $ 13 $ 22 $ 26 SCE: Service cost $ 33 $ 30 $ 66 $ 60 Non-service cost (benefit) Interest cost 24 28 48 56 Expected return on plan assets (53) (51) (106) (102) Amortization of prior service cost — 1 — 1 Amortization of net loss1 2 2 4 4 Regulatory adjustment 4 2 8 4 Total non-service benefit2 $ (23) $ (18) $ (46) $ (37) Total expense recognized $ 10 $ 12 $ 20 $ 23

1 Represents the amount of net loss reclassified from other comprehensive loss.

2 Included in "Other income" on Edison International's and SCE's consolidated statement of income.

Postretirement Benefits Other Than Pensions Pension and Other Postretirement Benefits Expense Components for Three months ended Six months ended Plans June 30, June 30, (in millions) 2021 2020 2021 2020 Service cost $ 10 $ 9 $ 20 $ 18 Non-service cost (benefit) Interest cost 14 17 28 34 Expected return on plan assets (27) (30) (54) (60) Amortization of net gain (8) (4) (16) (8) Regulatory adjustment 11 8 22 16 Total non-service benefit1 $ (10) $ (9) $ (20) $ (18) Total expense $ — $ — $ — $ —

1 Included in "Other income" on Edison International's and SCE's consolidated statement of income.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document 6 Months Ended Investments (Tables) Jun. 30, 2021 Investments [Abstract] Amortized Cost and Fair Value of the Trust Investments Amortized Cost Fair Value Longest June 30, December 31, June 30, December 31, (in millions) Maturity Dates 2021 2020 2021 2020 Stocks — N/A N/A $ 1,905 $ 1,908 Municipal bonds 2054 $ 896 $ 1,013 1,070 1,218 U.S. government and agency securities 2067 942 740 1,048 864 Corporate bonds 2070 442 460 518 550 Short-term investments and receivables/payables1 One-year 331 281 345 293 Total $ 2,611 $ 2,494 $ 4,886 $ 4,833

Summary of gains and losses Three months ended June 30, Six months ended June 30, (in millions) 2021 2020 2021 2020 Gross realized gains $ 140 $ 75 $ 251 $ 114 Gross realized losses (4) (1) (16) (3) Net unrealized gains (losses) for equity securities 16 271 34 (105)

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Regulatory Assets and 6 Months Ended Liabilities (Tables) Jun. 30, 2021 Regulatory Assets and Liabilities Disclosure [Abstract] Regulatory Assets Included on the Consolidated Balance June 30, December 31, Sheets (in millions) 2021 2020 Current: Regulatory balancing and memorandum accounts $ 1,606 $ 1,127 Power contracts 166 165 Other 23 22 Total current 1,795 1,314 Long-term: Deferred income taxes, net of liabilities 4,570 4,475 Pension and other postretirement benefits 4 12 Power contracts 195 239 Unamortized investments, net of accumulated amortization 110 114 Unamortized loss on reacquired debt 127 133 Regulatory balancing and memorandum accounts 2,096 1,794 Environmental remediation 247 247 Recovery assets1 329 — Other 132 106 Total long-term 7,810 7,120 Total regulatory assets $ 9,605 $ 8,434

Regulatory Liabilities Included on the Consolidated Balance June 30, December 31, Sheets (in millions) 2021 2020 Current: Regulatory balancing and memorandum accounts $ 378 $ 471 Energy derivatives 103 87 Other 11 11 Total current 492 569 Long-term: Cost of removal 2,735 2,595 Re-measurement of deferred taxes 2,229 2,283 Recoveries in excess of ARO liabilities1 2,002 1,930 Regulatory balancing and memorandum accounts 1,274 1,062 Other postretirement benefits 676 671 Other 44 48 Total long-term 8,960 8,589 Total regulatory liabilities $ 9,452 $ 9,158

Schedule of Regulatory Balancing Accounts June 30, December 31, (in millions) 2021 2020 Asset (liability) Energy resource recovery account $ (95) $ (89) Portfolio allocation balancing account 543 497 New system generation balancing account (28) (10) Public purpose programs and energy efficiency programs (1,137) (1,130) Base revenue requirement balancing account 665 622 Greenhouse gas auction revenue and low carbon fuel standard revenue (109) (125) FERC balancing accounts 32 12 Wildfire and drought restoration accounts1 396 361 Wildfire-related memorandum accounts2 1,404 1,104 COVID-19-related memorandum accounts 78 176 Customer service re-platform memorandum account3 61 30 Residential uncollectibles balancing account4 157 — Other 83 (60) Asset $ 2,050 $ 1,388

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document 1 The wildfire and drought restoration accounts regulatory assets represent restoration costs that are recorded in a Catastrophic Event Memorandum Account ("CEMA"). In July 2021, the CPUC issued a proposed decision which, if adopted, would deny without prejudice SCE's application to recover all restoration costs related to six 2017 wildfires. This could lead to $8 million of currently deferred regulatory assets being expensed.

3 CSRP memorandum account was established in the 2018 GRC to track costs for implementation of a new customer service system not currently reflected in SCE's revenue requirements.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Commitments and 6 Months Ended Contingencies (Tables) Jun. 30, 2021 Commitments and Contingencies Disclosure [Abstract] Schedule of Contingency Accruals and Changes (in millions) Balance at December 31, 20201 $ 4,383 Amounts paid (2,852) Balance at June 30, 20212 $ 1,531

(in millions) Balance at December 31, 2020 $ 708 Insurance recoveries (708) Balance at June 30, 2021 $ —

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Accumulated Other 6 Months Ended Comprehensive Loss Jun. 30, 2021 (Tables) Equity [Abstract] Components of Accumulated Edison International's accumulated other comprehensive loss, net of tax, consist of: Other Comprehensive Loss Three months ended June 30, Six months ended June 30, (in millions) 2021 2020 2021 2020 Beginning balance $ (67) $ (67) $ (69) $ (69) Pension and PBOP – net loss: Reclassified from accumulated other comprehensive loss1 2 2 4 4 Change 2 2 4 4 Ending Balance $ (65) $ (65) $ (65) $ (65)

1 These items are included in the computation of net periodic pension and PBOP Plan expense. See Note 9 for additional information.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document 6 Months Ended Other Income (Tables) Jun. 30, 2021 Other Income [Abstract] Summary of Other Income Three months ended Six months ended June 30, June 30, (in millions) 2021 2020 2021 2020 SCE other income (expense): Equity allowance for funds used during construction $ 25 $ 30 $ 60 $ 51 Increase in cash surrender value of life insurance policies and life insurance benefits 15 23 25 33 Interest income 1 7 1 16 Net periodic benefit income – non-service components 33 27 66 55 Civic, political and related activities and donations (8) (4) (12) (15) Other (2) (1) (4) (6) Total SCE other income 64 82 136 134 Other income (expense) of Edison International Parent and Other: Net periodic benefit costs – non-service components — — — (1) Other1 12 (1) 12 — Total Edison International other income $ 76 $ 81 $ 148 $ 133

1 Includes $12 million unrealized gains on investment in Proterra. For further details, see Note 10. Investments.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Supplemental Cash Flows 6 Months Ended Information (Tables) Jun. 30, 2021 Supplemental Cash Flow Elements [Abstract] Summary of Supplemental Cash Flows Information Edison International SCE Six months ended June 30, (in millions) 2021 2020 2021 2020 Cash payments (receipts): Interest, net of amounts capitalized $408 $369 $345 $312 Income taxes, net (87) — (87) — Non-cash financing and investing activities: Dividends declared but not paid: Common stock 252 241 — — Preferred and preference stock — 12 — 12

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Related-Party Transactions 6 Months Ended (Tables) Jun. 30, 2021 Related Party Transactions [Abstract] Schedule of Related-Party Transactions

June 30, December 31, (in millions) 2021 2020 Current insurance receivable due from affiliate $ — $ 268 Prepaid insurance1 — 56

1 Reflected in "Prepaid expenses" on SCE's consolidated balance sheets.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Summary of Significant 6 Months Ended Accounting Policies Jun. 30, 2021 (Organization (Details) mi² SCE Segment Reporting Information [Line Items] Supply of electricity area covered (in square miles) 50,000

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Summary of Significant Accounting Policies (Cash) Jun. 30, Dec. 31, Jun. 30, Dec. 31, (Details) - USD ($) 2021 2020 2020 2019 $ in Millions Restricted Cash and Cash Equivalents Items [Line Items] Money market funds $ 47 $ 62 Book balances reclassified to accounts payable 61 69 Cash and cash equivalents 84 87 Short-term restricted cash 1 2 Total cash, cash equivalents, and restricted cash 85 89 $ 526 $ 70 SCE Restricted Cash and Cash Equivalents Items [Line Items] Money market funds 20 38 Book balances reclassified to accounts payable 61 69 Cash and cash equivalents 51 55 Short-term restricted cash 1 Total cash, cash equivalents, and restricted cash $ 51 $ 56 $ 254 $ 24

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Summary of Significant 3 Months Ended 6 Months Ended Accounting Policies (Uncollectible Allowance) Jun. 30, Jun. 30, Jun. 30, Jun. 30, (Details) - SCE - USD ($) 2021 2020 2021 2020 $ in Millions Accounts Receivable, Allowance for Credit Loss [Roll Forward] Beginning balance $ 226 $ 60 $ 188 $ 49 Included in operation and maintenance expenses 15 17 25 35 Deferred to regulatory assets 32 21 66 21 Less: write-offs, net of recoveries 3 8 9 15 Ending balance 270 90 270 90 Customers Accounts Receivable, Allowance for Credit Loss [Roll Forward] Beginning balance 210 47 175 35 Included in operation and maintenance expenses 12 12 18 28 Deferred to regulatory assets 32 21 66 21 Less: write-offs, net of recoveries 5 5 9 Ending balance 254 75 254 75 All others Accounts Receivable, Allowance for Credit Loss [Roll Forward] Beginning balance 16 13 13 14 Included in operation and maintenance expenses 3 5 7 7 Less: write-offs, net of recoveries 3 3 4 6 Ending balance $ 16 $ 15 $ 16 $ 15

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Summary of Significant 1 Months Ended Accounting Policies (Revenue Recognition) Jul. 31, Dec. 31, Jul. 31, (Details) - SCE - USD ($) 2021 2020 2019 $ in Millions Public Utilities, General Disclosures [Line Items] Requested increase (decrease) in revenue requirement $ 214 $ 505 2021 General Rate Case Public Utilities, General Disclosures [Line Items] Requested revenue requirement $ 6,900 Requested increase (decrease) in revenue requirement 342 Non-core impairment of utility property, plant and equipment 78 Non-core impairment of utility property, plant and equipment, net of $ 56 tax

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Summary of Significant 1 Months Ended Accounting Policies (ESPP) Apr. 30, 2021 (Details) - Employee Stock USD ($) Purchase Plan shares Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Shares authorized (in shares) | shares 3,000,000 Maximum payroll deduction | $ $ 25,000 Purchase price based on market (as a percent) 97.00% Minimum Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Payroll deductions (as a percent) 1.00% Maximum Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Payroll deductions (as a percent) 10.00%

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Summary of Significant 3 Months Ended 6 Months Ended Accounting Policies (Earnings Per Share) Jun. 30, Jun. 30, Jun. 30, Jun. 30, (Details) - USD ($) 2021 2020 2021 2020 $ / shares in Units, $ in Millions Basic earnings per share Net income attributable to common shareholders $ 318 $ 318 $ 577 $ 501 Net income available for common stock $ 318 $ 318 $ 577 $ 501 Weighted average common shares outstanding (in shares) 380,000,000375,000,000379,000,000367,000,000 Basic earnings per share (in dollars per share) $ 0.84 $ 0.85 $ 1.52 $ 1.37 Diluted earnings per share Net income attributable to common shareholders $ 318 $ 318 $ 577 $ 501 Net income available for common stock 318 318 577 501 Net income available to common shareholders and assumed $ 318 $ 318 $ 577 $ 501 conversions Weighted average common shares outstanding (in shares) 380,000,000375,000,000379,000,000367,000,000 Incremental shares from assumed conversions (in shares) 1,000,000 1,000,000 1,000,000 Adjusted weighted average shares - diluted (in shares) 380,000,000376,000,000380,000,000368,000,000 Diluted earnings per share (in dollars per share) $ 0.84 $ 0.85 $ 1.52 $ 1.36 Antidilutive stock option awards excluded from earnings per 11,327,374 9,187,178 11,369,725 8,587,661 share, number of shares

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Consolidated Statements of 3 Months Ended Changes in Equity (Details) - USD ($) Jun. 30, Mar. 31, Jun. 30, Mar. 31, $ / shares in Units, $ in 2021 2021 2020 2020 Millions Increase (Decrease) in Stockholders' Equity [Roll Forward] Beginning balance $ 17,223 $ 15,949 $ 15,544 $ 15,496 Net income 361 290 348 213 Other comprehensive income 2 2 2 2 Common stock issued, net of issuance cost 14 21 815 88 Preferred stock issued, net of issuance cost (2) 1,237 Common stock dividends declared (252) (251) (241) (232) Preferred stock dividend accrued (17) (4) Dividends to noncontrolling interests (26) (27) (30) (30) Noncash stock-based compensation 10 6 8 7 Ending balance $ 17,313 $ 17,223 $ 16,446 $ 15,544 Dividends declared per common share (in dollars per $ 0.6625 $ 0.6625 $ 0.6375 $ 0.6375 share) Preferred stock dividends (in dollars per share) 13.2882 3.434 Minimum Increase (Decrease) in Stockholders' Equity [Roll Forward] Preferred stock dividends (in dollars per share) 0.255 0.255 Preference stock dividends (in dollars per share) 15.625 15.625 15.625 15.625 Maximum Increase (Decrease) in Stockholders' Equity [Roll Forward] Preferred stock dividends (in dollars per share) 0.299 0.299 Preference stock dividends (in dollars per share) $ 35.936 $ 35.936 $ 35.936 $ 35.936 Preferred and preference stock Increase (Decrease) in Stockholders' Equity [Roll Forward] Beginning balance $ 1,237 Preferred stock issued, net of issuance cost (2) $ 1,237 Ending balance 1,235 1,237 Common Stock, Including APIC Increase (Decrease) in Stockholders' Equity [Roll Forward] Beginning balance 5,989 5,962 $ 5,085 $ 4,990 Common stock issued, net of issuance cost 14 21 815 88 Noncash stock-based compensation 10 6 8 7 Ending balance 6,013 5,989 5,908 5,085 Accumulated Other Comprehensive Loss

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Increase (Decrease) in Stockholders' Equity [Roll Forward] Beginning balance (67) (69) (67) (69) Other comprehensive income 2 2 2 2 Ending balance (65) (67) (65) (67) Retained Earnings Increase (Decrease) in Stockholders' Equity [Roll Forward] Beginning balance 8,163 8,155 8,333 8,382 Net income 335 263 318 183 Common stock dividends declared (252) (251) (241) (232) Preferred stock dividend accrued (17) (4) Ending balance 8,229 8,163 8,410 8,333 Equity Attributable to Common Shareholders Increase (Decrease) in Stockholders' Equity [Roll Forward] Beginning balance 15,322 14,048 13,351 13,303 Net income 335 263 318 183 Other comprehensive income 2 2 2 2 Common stock issued, net of issuance cost 14 21 815 88 Preferred stock issued, net of issuance cost (2) 1,237 Common stock dividends declared (252) (251) (241) (232) Preferred stock dividend accrued (17) (4) Noncash stock-based compensation 10 6 8 7 Ending balance 15,412 15,322 14,253 13,351 Noncontrolling Interest, Preferred and Preference Stock Increase (Decrease) in Stockholders' Equity [Roll Forward] Beginning balance 1,901 1,901 2,193 2,193 Net income 26 27 30 30 Dividends to noncontrolling interests (26) (27) (30) (30) Ending balance 1,901 1,901 2,193 2,193 SCE Increase (Decrease) in Stockholders' Equity [Roll Forward] Beginning balance 19,522 18,650 18,046 17,827 Net income 385 323 411 249 Other comprehensive income 1 2 1 2 Capital contribution from Edison International Parent 325 900 619 269 Common stock dividends declared (325) (325) (269) (269) Dividends declared on preferred and preference stock (26) (27) (30) (30) Stock-based compensation (4) (5) Noncash stock-based compensation 5 3 3 3 Ending balance $ 19,887 $ 19,522 $ 18,781 $ 18,046

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Dividends declared per common share (in dollars per $ 0.7473 $ 0.7473 $ 0.6185 $ 0.6185 share) SCE | Minimum Increase (Decrease) in Stockholders' Equity [Roll Forward] Preferred stock dividends (in dollars per share) 0.255 0.255 Preference stock dividends (in dollars per share) 15.625 15.625 15.625 15.625 SCE | Maximum Increase (Decrease) in Stockholders' Equity [Roll Forward] Preferred stock dividends (in dollars per share) 0.299 0.299 Preference stock dividends (in dollars per share) $ 35.936 $ 35.936 $ 35.936 $ 35.936 SCE | Preferred and preference stock Increase (Decrease) in Stockholders' Equity [Roll Forward] Beginning balance $ 1,945 $ 1,945 $ 2,245 $ 2,245 Ending balance 1,945 1,945 2,245 2,245 SCE | Common Stock Increase (Decrease) in Stockholders' Equity [Roll Forward] Beginning balance 2,168 2,168 2,168 2,168 Ending balance 2,168 2,168 2,168 2,168 SCE | Additional Paid-in Capital Increase (Decrease) in Stockholders' Equity [Roll Forward] Beginning balance 6,286 5,387 4,207 3,939 Capital contribution from Edison International Parent 325 900 619 269 Stock-based compensation (4) (5) Noncash stock-based compensation 5 3 3 4 Ending balance 6,616 6,286 4,829 4,207 SCE | Accumulated Other Comprehensive Loss Increase (Decrease) in Stockholders' Equity [Roll Forward] Beginning balance (39) (41) (37) (39) Other comprehensive income 1 2 1 2 Ending balance (38) (39) (36) (37) SCE | Retained Earnings Increase (Decrease) in Stockholders' Equity [Roll Forward] Beginning balance 9,162 9,191 9,463 9,514 Net income 385 323 411 249 Common stock dividends declared (325) (325) (269) (269) Dividends declared on preferred and preference stock (26) (27) (30) (30) Noncash stock-based compensation (1) Ending balance $ 9,196 $ 9,162 $ 9,575 $ 9,463

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Variable Interest Entities (Recovery Funding) (Details) Jun. 30, 2021Mar. 31, 2021Feb. 28, 2021Dec. 31, 2020 - USD ($) $ in Millions Variable Interest Entity [Line Items] Regulatory assets $ 1,795.0 $ 1,314.0 Other current assets 198.0 224.0 Regulatory assets: Non-current 7,810.0 7,120.0 Current portion of long-term debt (415.0) (1,029.0) Other current liabilities (1,726.0) (1,612.0) Long-term debt (22,891.0) (19,632.0) SCE Recovery Funding LLC Variable Interest Entity [Line Items] Regulatory assets 2.0 Other current assets 6.0 Regulatory assets: Non-current 329.0 Current portion of long-term debt (14.0) Other current liabilities (3.0) Long-term debt (320.0) SCE Variable Interest Entity [Line Items] Regulatory assets 1,795.0 1,314.0 Other current assets 191.0 216.0 Regulatory assets: Non-current 7,810.0 7,120.0 Current portion of long-term debt (415.0) (1,029.0) Other current liabilities (1,288.0) (1,294.0) Long-term debt (19,756.0) $ (16,499.0) SCE | Recovery Bonds Variable Interest Entity [Line Items] Debt $ 338.0 $ 338.0 SCE | SCE Recovery Funding LLC Variable Interest Entity [Line Items] Regulatory assets: Non-current 329.0 Long-term debt $ (320.0)

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document 3 Months Ended 6 Months Ended 12 Months Ended Jun. 30, Jun. 30, Dec. 31, Variable Interest Entities Jun. 30, 2021 Jun. 30, 2021 Dec. 31, Dec. 31, Dec. 31, Dec. 31, 2020 2020 2017 Dec. 31, 2020 (Trusts) (Details) - SCE USD ($) USD ($) 2016 2015 2014 2013 USD ($) USD ($) USD ($) USD ($) MW MW USD ($) USD ($) USD ($) USD ($) MW MW $ / shares Variable Interest Entity [Line Items] Common stock $ $ $ 2,168,000,000 2,168,000,000 2,168,000,000 Trust Securities [Member] Variable Interest Entity [Line Items] Liquidation value (in dollars $ 2,500 per share) | $ / shares Variable Interest Entity, Not Primary Beneficiary Variable Interest Entity [Line Items] Liquidation value (in dollars $ 25 per share) | $ / shares Common stock $ 10,000 $ 10,000 $ 10,000 10,000 SCE Power Purchase Contracts Variable Interest Entity [Line Items] Power generating capacity for majority interest (in 3,889 6,583 3,889 6,583 megawatts) | MW Amount of related party $ $ $ 153,000,000 $ 312,000,000 transaction 150,000,000 301,000,000 Trust II Variable Interest Entity [Line Items] Liquidation preference $ 400,000,000 Trust II | Trust Securities [Member] Variable Interest Entity [Line Items] Liquidation preference 220,000,000 220,000,000 220,000,000 Trust II | 5.10% Series G (cumulative) Variable Interest Entity [Line Items] Security dividend rate, (as a 5.10% percent) Liquidation preference $ 220,000,000 220,000,000 220,000,000 400,000,000 Trust III Variable Interest Entity [Line Items] Liquidation preference $ 275,000,000 Trust III | Trust Securities [Member] Variable Interest Entity [Line Items] Liquidation preference 275,000,000 275,000,000 275,000,000 Trust III | 5.75% Series H (cumulative) Variable Interest Entity [Line Items] Security dividend rate, (as a 5.75% percent) Liquidation preference $ 275,000,000 275,000,000 275,000,000 275,000,000 Trust IV

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Variable Interest Entity [Line Items] Liquidation preference $ 325,000,000 Trust IV | Trust Securities [Member] Variable Interest Entity [Line Items] Liquidation preference 325,000,000 325,000,000 325,000,000 Trust IV | 5.375% Series J (cumulative) Variable Interest Entity [Line Items] Security dividend rate, (as a 5.375% percent) Liquidation preference $ 325,000,000 325,000,000 325,000,000 325,000,000 Trust V Variable Interest Entity [Line Items] Liquidation preference $ 300,000,000 Trust V | Trust Securities [Member] Variable Interest Entity [Line Items] Liquidation preference 300,000,000 300,000,000 300,000,000 Trust V | 5.45% Series K (cumulative) Variable Interest Entity [Line Items] Security dividend rate, (as a 5.45% percent) Liquidation preference $ 300,000,000 300,000,000 300,000,000 300,000,000 Trust VI Variable Interest Entity [Line Items] Liquidation preference $ 475,000,000 Trust VI | Trust Securities [Member] Variable Interest Entity [Line Items] Liquidation preference 475,000,000 475,000,000 475,000,000 Trust VI | 5.00% Series L (cumulative) Variable Interest Entity [Line Items] Security dividend rate, (as a 5.00% percent) Liquidation preference $ $ 475,000,000 $ 475,000,000 $ 475,000,000 475,000,000

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Variable Interest Entities 3 Months Ended 6 Months Ended (Trusts' Income Statement) (Details) - SCE - USD ($) Jun. 30, 2021Jun. 30, 2020Jun. 30, 2021Jun. 30, 2020 $ in Millions Trust II Variable Interest Entity [Line Items] Dividend income $ 5 $ 5 $ 10 $ 10 Dividend distributions 5 5 10 10 Trust III Variable Interest Entity [Line Items] Dividend income 4 4 8 8 Dividend distributions 4 4 8 8 Trust IV Variable Interest Entity [Line Items] Dividend income 5 5 9 9 Dividend distributions 5 5 9 9 Trust V Variable Interest Entity [Line Items] Dividend income 4 4 8 8 Dividend distributions 4 4 8 8 Trust VI Variable Interest Entity [Line Items] Dividend income 6 6 12 12 Dividend distributions $ 6 $ 6 $ 12 $ 12

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Fair Value Measurements (Fair Value by Level) Jun. 30, Dec. 31, (Details) - USD ($) 2021 2020 $ in Millions Assets at fair value Nuclear decommissioning trusts $ 4,886 $ 4,833 SCE Assets at fair value Nuclear decommissioning trusts $ 4,886 $ 4,833 Liabilities at fair value Percentage of equity investments located in the United States (as a percent) 73.00% 71.00% Collateralized mortgage obligations and other asset backed securities $ 32 $ 29 Payables, net, related to investments 74 206 SCE | Fair Value, Measurements, Recurring Assets at fair value Derivative contracts 89 108 Netting and Collateral (43) (18) Other 43 62 Nuclear decommissioning trusts 4,960 5,039 Total assets 5,092 5,209 Liabilities at fair value Derivative contracts 0 Netting and Collateral (17) (22) Total liabilities 0 Net assets 5,092 5,209 Netting and Collateral, Total (26) 4 SCE | Fair Value, Measurements, Recurring | Level 1 Assets at fair value Derivative contracts 0 Other 20 39 Nuclear decommissioning trusts 3,049 2,874 Total assets 3,069 2,913 Liabilities at fair value Derivative contracts 0 Total liabilities 0 Net assets 3,069 2,913 SCE | Fair Value, Measurements, Recurring | Level 2 Assets at fair value Derivative contracts 55 6 Other 23 23 Nuclear decommissioning trusts 1,911 2,165 Total assets 1,989 2,194 Liabilities at fair value Derivative contracts 7 10

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Total liabilities 7 10 Net assets 1,982 2,184 SCE | Fair Value, Measurements, Recurring | Level 3 Assets at fair value Derivative contracts 77 120 Other 0 Nuclear decommissioning trusts 0 Total assets 77 120 Liabilities at fair value Derivative contracts 10 12 Total liabilities 10 12 Net assets 67 108 SCE | Fair Value, Measurements, Recurring | Stocks Assets at fair value Nuclear decommissioning trusts 1,905 1,908 SCE | Fair Value, Measurements, Recurring | Stocks | Level 1 Assets at fair value Nuclear decommissioning trusts 1,905 1,908 SCE | Fair Value, Measurements, Recurring | Stocks | Level 2 Assets at fair value Nuclear decommissioning trusts 0 SCE | Fair Value, Measurements, Recurring | Stocks | Level 3 Assets at fair value Nuclear decommissioning trusts 0 SCE | Fair Value, Measurements, Recurring | Fixed Income Assets at fair value Nuclear decommissioning trusts 2,636 2,632 SCE | Fair Value, Measurements, Recurring | Fixed Income | Level 1 Assets at fair value Nuclear decommissioning trusts 891 519 SCE | Fair Value, Measurements, Recurring | Fixed Income | Level 2 Assets at fair value Nuclear decommissioning trusts 1,745 2,113 SCE | Fair Value, Measurements, Recurring | Fixed Income | Level 3 Assets at fair value Nuclear decommissioning trusts 0 SCE | Fair Value, Measurements, Recurring | Short-term investments, primarily cash equivalents Assets at fair value Nuclear decommissioning trusts 419 499 SCE | Fair Value, Measurements, Recurring | Short-term investments, primarily cash equivalents | Level 1 Assets at fair value Nuclear decommissioning trusts 253 447

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document SCE | Fair Value, Measurements, Recurring | Short-term investments, primarily cash equivalents | Level 2 Assets at fair value Nuclear decommissioning trusts 166 $ 52 SCE | Fair Value, Measurements, Recurring | Short-term investments, primarily cash equivalents | Level 3 Assets at fair value Nuclear decommissioning trusts $ 0

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Fair Value Measurements Jun. 30, Dec. 31, (Parent) (Details) - USD ($) 2021 2020 $ in Millions Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Money market funds $ 47 $ 62 Edison International | Level 1 Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Equity investment 21 Money market funds 27 24 Edison International | Level 2 Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Short-term Investments $ 4 $ 5

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Fair Value Measurements 3 Months Ended 6 Months Ended (Level 3 Rollforward) (Details) - SCE - Level 3 - Jun. 30, 2021Jun. 30, 2020Jun. 30, 2021Jun. 30, 2020 USD ($) $ in Millions Fair Value Disclosures Level 3 [Roll Forward] Fair value of net assets at beginning of period $ 91 $ 52 $ 108 $ 78 Purchases 8 Sales (1) (3) (1) (4) Settlements (2) (6) (16) (26) Total realized/unrealized losses (21) (9) (24) (22) Fair value of net assets at end of period $ 67 $ 34 $ 67 $ 34

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Fair Value Measurements (Level 3 Fair Value Measurements) (Details) - Jun. 30, 2021 Dec. 31, 2020 SCE - Level 3 - Congestion USD ($) USD ($) revenue rights (GWh) - $ / MWh Auction prices $ in Millions Quantitative Information About Level 3 Measurements [Line Items] Fair Value, Assets $ 77 $ 120 Fair Value, Liabilities $ 10 $ 12 Minimum Quantitative Information About Level 3 Measurements [Line Items] Derivative Asset (Liability) Net, Measurement Input (1.39) (9.67) Maximum Quantitative Information About Level 3 Measurements [Line Items] Derivative Asset (Liability) Net, Measurement Input 44.46 300.47 Weighted Average Quantitative Information About Level 3 Measurements [Line Items] Derivative Asset (Liability) Net, Measurement Input 2.31 2.75

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Fair Value Measurements (Fair Value Debt) (Details) - Jun. 30, 2021Dec. 31, 2020 USD ($) $ in Millions Fair Value of Long-Term Debt Recorded at Carrying Value Carrying Value $ 23,306 $ 20,337 Fair Value 25,527 23,824 SCE Fair Value of Long-Term Debt Recorded at Carrying Value Carrying Value 20,171 17,204 Fair Value $ 22,156 $ 20,365

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Debt and Credit Agreements 1 Months Ended (Quarter) (Details) - USD ($) Jun. 30, May 31, Apr. 30, Mar. 31, Feb. 28, $ in Millions 2021 2021 2021 2021 2021 Debt Instrument [Line Items] Commitment $ 4,850.0 SCE Debt Instrument [Line Items] Commitment 3,350.0 SCE | 2.25% first and refunding mortgage bonds due 2030 Debt Instrument [Line Items] Debt $ 150.0 Interest rate on debt (as a percent) 0.0225% SCE | 2.95% first and refunding mortgage bonds due 2051 Debt Instrument [Line Items] Debt $ 750.0 Interest rate on debt (as a percent) 0.0295% SCE | 0.64% first and refunding mortgage bonds due 2023 Debt Instrument [Line Items] Debt $ 400.0 SCE | 0.64% first and refunding mortgage bonds due 2023 | SOFR Debt Instrument [Line Items] Basis points 0.64% SCE | 0.83% first and refunding mortgage bonds due 2024 Debt Instrument [Line Items] Debt $ 400.0 SCE | 0.83% first and refunding mortgage bonds due 2024 | SOFR Debt Instrument [Line Items] Basis points 0.83% SCE | 0.70% first and refunding mortgage bonds due 2023 Debt Instrument [Line Items] Debt $ 350.0 Interest rate on debt (as a percent) 0.70% SCE | 1.10% first and refunding mortgage bonds due 2024 Debt Instrument [Line Items] Debt $ 700.0 Interest rate on debt (as a percent) 1.10%

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document SCE | 2.50% first and refunding mortgage bonds due 2031 Debt Instrument [Line Items] Debt $ 450.0 SCE | 2.50% first and refunding mortgage bonds due 2031 | SOFR Debt Instrument [Line Items] Interest rate on debt (as a percent) 2.50% SCE | 3.65% first and refunding mortgage bonds due 2051 Debt Instrument [Line Items] Debt $ 450.0 SCE | 3.65% first and refunding mortgage bonds due 2051 | SOFR Debt Instrument [Line Items] Interest rate on debt (as a percent) 3.65% SCE | Recovery Bonds Debt Instrument [Line Items] Debt $ 338.0 $ 338.0 SCE | Recovery Bonds, 0.86% due 2033 Debt Instrument [Line Items] Debt $ 138.0 Interest rate on debt (as a percent) 0.86% SCE | Recovery Bonds, 1.94% due 2040 Debt Instrument [Line Items] Debt $ 100.0 Interest rate on debt (as a percent) 1.94% SCE | Recovery Bonds, 2.51% due 2045 Debt Instrument [Line Items] Debt $ 100.0 Interest rate on debt (as a percent) 2.51% SCE | 0.60% term loan due 2022 Debt Instrument [Line Items] Debt $ 1,200.0 SCE | 0.60% term loan due 2022 | SOFR Debt Instrument [Line Items] Basis points 0.60% SCE | 0.35% first and refunding mortgage bonds due 2022 Debt Instrument [Line Items] Debt $ 475.0 SCE | 0.35% first and refunding mortgage bonds due 2022 | SOFR Debt Instrument [Line Items] Basis points 0.35%

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Debt and Credit Agreements 1 Months 6 Months (Credit Facilities) (Details) - Ended Ended USD ($) Apr. 30, May 31, 2021 Jun. 30, 2021 $ in Millions 2021 Line of Credit Facility [Line Items] Commitment $ 4,850 Outstanding borrowings 200 Outstanding letters of credit 120 Amount available 4,530 Edison International Line of Credit Facility [Line Items] Commitment 1,500 Outstanding borrowings 25 Amount available 1,475 Edison International | June 2019 credit agreement Line of Credit Facility [Line Items] Commitment 1,500 Outstanding borrowings 25 Amount available $ 1,475 Contingent maximum available borrowing $ 2,000 Edison International | June 2019 credit agreement | SOFR Line of Credit Facility [Line Items] Basis points 1.28% Edison International | June 2019 credit agreement | Commercial paper Line of Credit Facility [Line Items] Outstanding borrowings $ 25 Weighted average interest rate (as a percent) 0.32% SCE Line of Credit Facility [Line Items] Commitment $ 3,350 Outstanding borrowings 175 Outstanding letters of credit 120 Amount available 3,055 SCE | June 2019 credit agreement Line of Credit Facility [Line Items] Commitment 3,350 3,400 Outstanding borrowings 175 Outstanding letters of credit 120 Amount available $ 3,055 Increased commitment amount 350 Contingent maximum available borrowing $ 4,000 SCE | June 2019 credit agreement | SOFR Line of Credit Facility [Line Items]

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Basis points 1.08% SCE | June 2019 credit agreement | Commercial paper Line of Credit Facility [Line Items] Outstanding borrowings $ 175 Weighted average interest rate (as a percent) 0.23% SCE | March 2020 credit agreement Line of Credit Facility [Line Items] Repayments of outstanding debt $ 800 SCE | March 2020 term loan agreement Line of Credit Facility [Line Items] Repayments of outstanding debt $ 148

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Derivative Instruments (Derivative) (Details) - SCE - Jun. 30, Dec. 31, Economic hedge - USD ($) 2021 2020 $ in Millions Derivatives Aggregate fair value of all derivative liabilities with credit-risk-related contingent $ 1 $ 1 features Potential amount of collateral to be posted if contingencies triggered $ 4

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Derivative Instruments (Balance Sheet Disclosures) (Details) - SCE - Commodity Jun. 30, 2021Dec. 31, 2020 derivative contracts - USD ($) $ in Millions Derivative Assets Gross amounts recognized $ 131 $ 126 Gross amounts offset in the consolidated balance sheets (16) (18) Cash collateral posted (26) 0 Net amounts presented in the consolidated balance sheets 89 108 Derivative Liabilities Gross amounts recognized 16 22 Gross amounts offset in the consolidated balance sheets (16) (18) Cash collateral posted 0 (4) Net amounts presented in the consolidated balance sheets 0 0 Net Asset Gross amounts recognized 115 104 Gross amounts offset in the consolidated balance sheets 0 0 Netting and Collateral, Total (26) 4 Net amounts presented in the consolidated balance sheets 89 108 Cash collateral received for asset 30 Cash collateral not offset against asset 4 Cash collateral received for liability 17 Cash collateral not offset against liability 13 Other current assets Derivative Assets Gross amounts recognized 115 103 Gross amounts offset in the consolidated balance sheets (12) (12) Cash collateral posted (26) 0 Net amounts presented in the consolidated balance sheets 77 91 Other long-term assets Derivative Assets Gross amounts recognized 16 23 Gross amounts offset in the consolidated balance sheets (4) (6) Cash collateral posted 0 0 Net amounts presented in the consolidated balance sheets 12 17 Other current liabilities Derivative Liabilities Gross amounts recognized 12 16 Gross amounts offset in the consolidated balance sheets (12) (12) Cash collateral posted 0 (4) Net amounts presented in the consolidated balance sheets 0 0 Other long-term liabilities

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Derivative Liabilities Gross amounts recognized 4 6 Gross amounts offset in the consolidated balance sheets (4) (6) Cash collateral posted 0 0 Net amounts presented in the consolidated balance sheets $ 0 $ 0

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Derivative Instruments 3 Months Ended 6 Months Ended (Hedging Activities) (Details) - SCE - USD ($) Jun. 30, 2021Jun. 30, 2020Jun. 30, 2021Jun. 30, 2020 $ in Millions Derivative Instruments, Gain (Loss) [Line Items] Realized gains (losses) $ 15 $ (16) $ 127 $ (60) Unrealized gains (losses) $ 16 $ (31) $ 10 $ (114)

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document 6 Months Ended12 Months Ended Derivative Instruments Jun. 30, 2021 Dec. 31, 2020 (Notional Values) (Details) - Bcfe Bcfe SCE GWh GWh Electricity options, swaps and forwards (GWh) Derivatives Notional volumes of derivative instruments 647 1,581 Natural gas options, swaps and forwards (Bcf) Derivatives Notional volumes of derivative instruments | Bcfe 53 34 Congestion revenue rights (GWh) Derivatives Notional volumes of derivative instruments 29,285 41,151

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Revenue (Summary of 1 Months Ended 3 Months Ended 6 Months Ended Revenue) (Details) - USD ($) Jul. 31, Jul. 31, Jun. 30, Jun. 30, Jun. 30, Jun. 30, Dec. 31, $ in Millions 2021 2019 2021 2020 2021 2020 2020 Disaggregation of Revenue [Line Items] Total operating revenue $ 3,315 $ 2,987 $ 6,275 $ 5,777 SCE Disaggregation of Revenue [Line Items] Revenues from contracts with customers 3,126 2,878 6,025 5,220 Alternative revenue programs and other 180 102 234 540 operating revenue Total operating revenue 3,306 2,980 6,259 5,760 Receivables from contracts with 2,100 2,100 $ 1,500 customers Accrued unbilled revenues 863 863 $ 521 Revenue recovery period 2 years SCE | West of Devers Disaggregation of Revenue [Line Items] Proceeds from external investment $ 400 Revenue recovery period 30 years SCE | Earning Activities Disaggregation of Revenue [Line Items] Revenues from contracts with customers 1,703 1,658 3,407 3,282 Alternative revenue programs and other 127 117 190 234 operating revenue Total operating revenue 1,830 1,775 3,597 3,516 SCE | Cost- Recovery Activities Disaggregation of Revenue [Line Items] Revenues from contracts with customers 1,423 1,220 2,618 1,938 Alternative revenue programs and other 53 (15) 44 306 operating revenue Total operating revenue $ 1,476 $ 1,205 $ 2,662 $ 2,244

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Income Taxes (Rate 3 Months Ended 6 Months Ended Reconciliation) (Details) - Jun. 30, Jun. 30, Jun. 30, Jun. 30, USD ($) 2021 2020 2021 2020 $ in Millions Income Tax Disclosure [Line Items] Statutory tax rate (as a percent) 21.00% Income from operations before income taxes $ 429 $ 352 $ 683 $ 481 Provision for income tax at federal statutory rate of 90 74 143 101 21% Increase in income tax from: State tax, net of federal benefit 18 6 11 (7) Property-related (43) (69) (126) (147) Change related to uncertain tax position (15) Other 3 (7) 4 (12) Total income tax expense (benefit) $ 68 $ 4 $ 32 $ (80) Effective tax rate (as a percent) 15.90% 1.10% 4.70% (16.60%) SCE Income Tax Disclosure [Line Items] Statutory tax rate (as a percent) 21.00% Income from operations before income taxes $ 461 $ 437 $ 760 $ 611 Provision for income tax at federal statutory rate of 97 92 160 129 21% Increase in income tax from: State tax, net of federal benefit 19 11 15 (1) Property-related (43) (69) (126) (147) Change related to uncertain tax position (1) (18) Other 3 (7) 3 (12) Total income tax expense (benefit) $ 76 $ 26 $ 52 $ (49) Effective tax rate (as a percent) 16.50% 5.90% 6.80% (8.00%)

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Compensation and Benefit 3 Months Ended 6 Months Ended Plans (Expense Components) (Details) - USD ($) Jun. 30, 2021Jun. 30, 2020Jun. 30, 2021Jun. 30, 2020 $ in Millions Pension Plans Pension and Other Postretirement Benefits Service cost $ 34 $ 31 $ 68 $ 62 Non-service cost Interest cost 26 30 52 61 Expected return on plan assets (56) (54) (112) (108) Amortization of prior service cost 1 1 Amortization of net loss 3 3 6 6 Regulatory adjustment (deferred) 4 2 8 4 Total non-service benefit (23) (18) (46) (36) Total expense recognized 11 13 22 26 Postretirement Benefits Other Than Pensions Pension and Other Postretirement Benefits Service cost 10 9 20 18 Non-service cost Interest cost 14 17 28 34 Expected return on plan assets (27) (30) (54) (60) Amortization of net loss (8) (4) (16) (8) Regulatory adjustment (deferred) 11 8 22 16 Total non-service benefit (10) (9) (20) (18) SCE Non-service cost Total non-service benefit (33) (27) (66) (55) SCE | Pension Plans Pension and Other Postretirement Benefits Service cost 33 30 66 60 Non-service cost Interest cost 24 28 48 56 Expected return on plan assets (53) (51) (106) (102) Amortization of prior service cost 1 1 Amortization of net loss 2 2 4 4 Regulatory adjustment (deferred) 4 2 8 4 Total non-service benefit (23) (18) (46) (37) Total expense recognized $ 10 $ 12 $ 20 $ 23

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Investments (Trust Value) Jun. 30, Dec. 31, (Details) - USD ($) 2021 2020 $ in Millions Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value $ 4,886 $ 4,833 SCE Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Amortized Cost 2,611 2,494 Fair Value 4,886 4,833 SCE | Municipal bonds Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Amortized Cost 896 1,013 SCE | U.S. government and agency securities Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Amortized Cost 942 740 SCE | Corporate bonds Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Amortized Cost 442 460 SCE | Short-term investments and receivables/payables Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Amortized Cost 331 281 SCE | Fair Value, Measurements, Recurring Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value 4,960 5,039 SCE | Fair Value, Measurements, Recurring | Stocks Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value 1,905 1,908 SCE | Fair Value, Measurements, Recurring | Municipal bonds Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value 1,070 1,218 SCE | Fair Value, Measurements, Recurring | U.S. government and agency securities Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value 1,048 864 SCE | Fair Value, Measurements, Recurring | Corporate bonds

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value 518 550 SCE | Fair Value, Measurements, Recurring | Short-term investments and receivables/ payables Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value 345 293 Repurchase agreements payable $ 52 $ 138

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Investments (Trust Info) (Details) - SCE - USD ($) Jun. 30, 2021Dec. 31, 2020 $ in Millions Investment Holdings [Line Items] Unrealized holding gains, net of losses $ 2,000 $ 2,100 Deferred income taxes related to unrealized gains 491 515 Nuclear decommissioning trusts, net of deferred tax $ 4,400 $ 4,300

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Investments (Trust gain loss) 3 Months Ended 6 Months Ended (Details) - SCE - USD ($) Jun. 30, 2021Jun. 30, 2020Jun. 30, 2021Jun. 30, 2020 $ in Millions Investment Holdings [Line Items] Gross realized gains $ 140 $ 75 $ 251 $ 114 Gross realized losses (4) (1) (16) (3) Net unrealized gains (losses) for equity securities $ 16 $ 271 $ 34 $ (105)

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Investments (Other) (Details) 3 Months Ended6 Months Ended - Edison International - Jun. 30, 2021 Jun. 30, 2021 Proterra USD ($) USD ($) $ in Millions Investment Holdings [Line Items] Unrealized gain (loss), pre-tax $ 12 $ 12 Unrealized gain (loss), net tax 9 Long-term investments $ 21 $ 21

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Regulatory Assets and Liabilities (Assets) (Details) - Jun. 30, 2021Dec. 31, 2020 USD ($) $ in Millions Regulatory Assets [Line Items] Current regulatory assets $ 1,795 $ 1,314 Regulatory assets: Non-current 7,810 7,120 SCE Regulatory Assets [Line Items] Current regulatory assets 1,795 1,314 Regulatory assets: Non-current 7,810 7,120 Total regulatory assets 9,605 8,434 SCE | Regulatory balancing and memorandum accounts-asset Regulatory Assets [Line Items] Current regulatory assets 1,606 1,127 Regulatory assets: Non-current 2,096 1,794 SCE | Power contracts Regulatory Assets [Line Items] Current regulatory assets 166 165 Regulatory assets: Non-current 195 239 SCE | Other regulatory assets or liabilities Regulatory Assets [Line Items] Current regulatory assets 23 22 Regulatory assets: Non-current 132 106 SCE | Deferred income taxes, net of liabilities Regulatory Assets [Line Items] Regulatory assets: Non-current 4,570 4,475 SCE | Pension and other postretirement benefits Regulatory Assets [Line Items] Regulatory assets: Non-current 4 12 SCE | Unamortized investments, net of accumulated amortization Regulatory Assets [Line Items] Regulatory assets: Non-current 110 114 SCE | Unamortized loss on reacquired debt Regulatory Assets [Line Items] Regulatory assets: Non-current 127 133 SCE | Environmental remediation Regulatory Assets [Line Items] Regulatory assets: Non-current 247 $ 247 SCE | Recoverable assets Regulatory Assets [Line Items] Regulatory assets: Non-current $ 329

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Regulatory Assets and Liabilities (Liabilities) Jun. 30, 2021Dec. 31, 2020 (Details) - USD ($) $ in Millions Regulatory Liabilities [Line Items] Current regulatory liabilities $ 492 $ 569 Long-term regulatory liabilities 8,960 8,589 SCE Regulatory Liabilities [Line Items] Current regulatory liabilities 492 569 Long-term regulatory liabilities 8,960 8,589 Total regulatory liabilities 9,452 9,158 SCE | Revenue subject to refund-liability Regulatory Liabilities [Line Items] Current regulatory liabilities 378 471 Long-term regulatory liabilities 1,274 1,062 SCE | Energy derivatives Regulatory Liabilities [Line Items] Current regulatory liabilities 103 87 SCE | Other regulatory assets or liabilities Regulatory Liabilities [Line Items] Current regulatory liabilities 11 11 Long-term regulatory liabilities 44 48 SCE | Costs of removal Regulatory Liabilities [Line Items] Long-term regulatory liabilities 2,735 2,595 SCE | Re-measurement of deferred taxes Regulatory Liabilities [Line Items] Long-term regulatory liabilities 2,229 2,283 SCE | Recoveries in excess of ARO liabilities Regulatory Liabilities [Line Items] Long-term regulatory liabilities 2,002 1,930 SCE | Other postretirement benefits Regulatory Liabilities [Line Items] Long-term regulatory liabilities $ 676 $ 671

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Regulatory Assets and Liabilities (Balancing Jul. 31, Jun. 30, Dec. 31, Accounts) (Details) - SCE - 2021 2021 2020 USD ($) $ in Millions Regulatory balancing and memorandum accounts-asset | Significant components Regulatory Assets and Liabilities Net regulatory assets (liabilities) $ 2,050 $ 1,388 Regulatory balancing and memorandum accounts-asset | Portfolio allocation balancing account Regulatory Assets and Liabilities Net regulatory assets (liabilities) 543 497 Regulatory balancing and memorandum accounts-asset | Base revenue requirement balancing account Regulatory Assets and Liabilities Net regulatory assets (liabilities) 665 622 Regulatory balancing and memorandum accounts-asset | FERC balancing account Regulatory Assets and Liabilities Net regulatory assets (liabilities) 32 12 Regulatory balancing and memorandum accounts-asset | Wildfire and drought restoration accounts Regulatory Assets and Liabilities Net regulatory assets (liabilities) 396 361 Costs not yet approved $ 8 Regulatory balancing and memorandum accounts-asset | Wildfire-related memorandum accounts Regulatory Assets and Liabilities Net regulatory assets (liabilities) 1,404 1,104 Regulatory balancing and memorandum accounts-asset | COVID 19-related memorandum accounts Regulatory Assets and Liabilities Net regulatory assets (liabilities) 78 176 Regulatory balancing and memorandum accounts-asset | Customer service re- platform memorandum account Regulatory Assets and Liabilities Net regulatory assets (liabilities) 61 30 Regulatory balancing and memorandum accounts-asset | Residential uncollectibles balancing account Regulatory Assets and Liabilities Net regulatory assets (liabilities) 157 Regulatory balancing and memorandum accounts-asset | Other Regulatory Assets and Liabilities Net regulatory assets (liabilities) 83

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Revenue subject to refund-liability | Energy resource recovery account Regulatory Assets and Liabilities Net regulatory assets (liabilities) (95) (89) Revenue subject to refund-liability | New system generation balancing account Regulatory Assets and Liabilities Net regulatory assets (liabilities) (28) (10) Revenue subject to refund-liability | Public purpose programs and energy efficiency programs Regulatory Assets and Liabilities Net regulatory assets (liabilities) (1,137) (1,130) Revenue subject to refund-liability | Greenhouse gas auction revenue and low carbon fuel standard revenue Regulatory Assets and Liabilities Net regulatory assets (liabilities) $ (109) (125) Revenue subject to refund-liability | Other Regulatory Assets and Liabilities Net regulatory assets (liabilities) $ (60)

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document 6 Months 1 Months Ended Ended Commitments and Sep. 30, Oct. 31, Nov. 30, Dec. 04, Contingencies (Wildfires and 2020 Jan. 31, 2019 Jun. 30, Dec. 31, 2018 2017 Mudslides) (Details) USD ($) 2018 a 2021 2020 a a $ in Millions a individual individual USD ($) USD ($) individual item item item item item individual individual 2019/2020 Wildfires Loss Contingencies [Line Items] Charge for wildfire-related claims | $ $ 118 Expected insurance recoveries | $ 75 2017/2018 Wildfire/Mudslide Events Loss Contingencies [Line Items] Expected revenue from FERC 94 customers | $ Charge for wildfire-related claims | $ 1,531 $ 4,383 Aggregate settlement payments | $ $ 4,700 SCE Loss Contingencies [Line Items] High fire risk service area, percent 27.00% SCE | Saddle Ridge Fire Loss Contingencies [Line Items] Acres burned | a 9,000 Structures destroyed 19 Structures damaged 88 Fatalities | individual 1 Number of injured firefighters | 8 individual SCE | Bobcat fire Loss Contingencies [Line Items] Acres burned | a 116,000 Number of injured firefighters | 6 individual Estimated fire suppression costs | $ $ 80 SCE | Bobcat fire | Homes Loss Contingencies [Line Items] Structures destroyed 87 Structures damaged 28 SCE | Bobcat fire | Commercial property Loss Contingencies [Line Items] Structures destroyed 1

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document SCE | Bobcat fire | Minor structures Loss Contingencies [Line Items] Structures destroyed 83 Structures damaged 19 SCE | 2017/2018 Wildfire/Mudslide Events Loss Contingencies [Line Items] Expected revenue from FERC $ 94 customers | $ Expected insurance recoveries | $ $ 708 SCE | December 2017 - Thomas and Koenigstein Wildfires Loss Contingencies [Line Items] Acres burned | a 280,000 Structures destroyed 1,343 Fatalities | individual 2 SCE | November 2018 - Woolsey Wildfires Loss Contingencies [Line Items] Acres burned | a 100,000 Structures destroyed 1,643 Structures damaged 364 Fatalities | individual 3 Additional fatalities | individual 2 SCE | Montecito Mudslides Loss Contingencies [Line Items] Structures destroyed 135 Structures damaged 324 Fatalities | individual 21 Additional fatalities presumed | 2 individual

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document 2 3 6 12 1 Months Months Months Months Months Ended Ended Ended Ended Ended Commitments and Oct. Contingencies (Wildfires Jan. 31, Jul. 22, Jun. 30, Jan. litigation) (Details) 31, 2020 Apr. 30, Dec. 31, Dec. 31, 2021 2021 31, $ in Millions 2021 USD 2021 2019 2020 lawsuit USD ($) 2019 $ / ($) USD ($) USD ($) USD ($) plaintiff plaintiff claim claim $ / claim San Onofre OII Loss Contingencies [Line Items] Number of pending lawsuits | claim 2 2019/2020 Wildfires Loss Contingencies [Line Items] Charge for wildfire-related claims $ 118 2017/2018 Wildfire/Mudslide Events Loss Contingencies [Line Items] Payments 2,852 Charge for wildfire-related claims 1,531 $ 4,383 2017/2018 Wildfire/Mudslide Events | Settled Litigation Loss Contingencies [Line Items] Charge for wildfire-related claims 141,000 2017/2018 Wildfire/Mudslide Events | Pending Litigation Loss Contingencies [Line Items] Charge for wildfire-related claims $ 1,400 Thomas and Koenigstein Fires and Montecito Mudslides Loss Contingencies [Line Items] Number of pending lawsuits | lawsuit 44 Thomas and Koenigstein Fires, Class Action Loss Contingencies [Line Items] Number of pending lawsuits | lawsuit 4 SCE | 2017/2018 Wildfire/Mudslide Events | Local Public Entity Settlements Loss Contingencies [Line Items] Payments $ 360 SCE | 2017/2018 Wildfire/Mudslide Events | TKM Subrogation Settlement Loss Contingencies [Line Items] Payments $ 1,200

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Payment agreement for each dollar of 0.555 claim | $ / claim SCE | 2017/2018 Wildfire/Mudslide Events | Individual Plaintiff Settlements Loss Contingencies [Line Items] Number of plaintiffs | plaintiff 3,000 Payments $ 750 $ 300 SCE | Thomas and Koenigstein Fires and Montecito Mudslides Loss Contingencies [Line Items] Number of pending lawsuits | lawsuit 70 SCE | December 2017 - Thomas and Koenigstein Wildfires Loss Contingencies [Line Items] Number of pending lawsuits | lawsuit 278 Number of plaintiffs | plaintiff 3,000 SCE | November 2018 - Woolsey Wildfires Loss Contingencies [Line Items] Number of pending lawsuits | lawsuit 334 Number of plaintiffs | lawsuit 6,000 SCE | November 2018 - Woolsey Wildfires | Woolsey Subrogation Settlement Loss Contingencies [Line Items] Payments $ 2,200 Payment agreement for each dollar of 0.67 claim | $ / claim SCE | Woolsey Fire, Class Action Loss Contingencies [Line Items] Number of pending lawsuits | lawsuit 2

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Commitments and 6 Months Ended12 Months Ended Contingencies (Wildfire loss accrual) (Details) - USD ($) Jun. 30, 2021 Dec. 31, 2020 $ in Millions 2017/2018 Wildfire/Mudslide Events Loss Contingency Accrual [Roll Forward] Beginning balance $ 4,383 Amounts paid (2,852) Ending balance 1,531 $ 4,383 2017/2018 Wildfire/Mudslide Events | Other current liabilities Loss Contingency Accrual [Roll Forward] Beginning balance 2,231 Ending balance 141 2,231 2017/2018 Wildfire/Mudslide Events | Other long-term liabilities Loss Contingency Accrual [Roll Forward] Beginning balance 2,281 Fixed payments to be made under settlement agreements 1,519 Ending balance 2,281 November 2018 - Woolsey Wildfires Loss Contingency Accrual [Roll Forward] Litigation settlement 2,212 November 2018 - Woolsey Wildfires | Other long-term liabilities Loss Contingency Accrual [Roll Forward] Beginning balance 2,152 Ending balance 1,390 2,152 Other Wildfire Related Claims Loss Contingency Accrual [Roll Forward] Litigation settlement 19 Other Wildfire Related Claims | Other long-term liabilities Loss Contingency Accrual [Roll Forward] Beginning balance 129 Ending balance $ 129 $ 129

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Commitments and 6 Months Ended Contingencies (Wildfire Insurance Recovery) Jun. 30, 2021 (Details) - SCE USD ($) $ in Millions Loss Contingencies [Line Items] Wildfire insurance coverage $ 1,000 Self insurance 50 2017/2018 Wildfire/Mudslide Events Loss Contingencies [Line Items] Wildfire insurance coverage 1,000 Self insurance 10 Movement in Loss Contingency Receivable, Increase (Decrease) [Roll Forward] Balance beginning 708 Insurance recoveries (708) November 2018 - Woolsey Wildfires Loss Contingencies [Line Items] Wildfire insurance coverage 1,000 Self insurance $ 10

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Commitments and 6 Months 12 Months 1 Months Ended Contingencies (Wildfire Ended Ended Insurance Coverage) Jul. 01, Jul. 31, Dec. 31, Sep. 30, Jul. 31, Jun. 30, Dec. 31, (Details) - USD ($) 2021 2021 2020 2020 2019 2021 2020 $ in Millions SCE Loss Contingencies [Line Items] Requested increase (decrease) in $ 214 $ 505 revenue requirement Wildfire insurance coverage $ 1,000 Co-insurance 75 Self insurance 50 Coverage net 875 Approved regulatory increase $ 505 (decrease) in revenue Regulatory assets 8,434 9,605 $ 8,434 Revenue recovery period 2 years SCE | Forecast Loss Contingencies [Line Items] Wildfire insurance expense $ 425 SCE | Wildfire insurance costs Loss Contingencies [Line Items] Requested increase (decrease) in 204 $ 478 revenue requirement Wildfire insurance expense $ 460 2017/2018 Wildfire/Mudslide Events Loss Contingencies [Line Items] Expected revenue from FERC 94 customers 2017/2018 Wildfire/Mudslide Events | SCE Loss Contingencies [Line Items] Expected insurance recoveries $ 708 708 Insurance settlements and recoveries 708 Requested increase (decrease) in $ 60 revenue requirement Potential impairment 189 Expected FERC cumulative recoveries 233 Expected revenue from FERC 94 customers Wildfire insurance coverage 1,000 Self insurance 10 2017/2018 Wildfire/Mudslide Events | SCE | Aggregate

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Loss Contingencies [Line Items] Increase in accrued estimated losses to 6,200 reflect best estimate Litigation settlement 4,800 Insurance settlements and recoveries 2,000 November 2018 - Woolsey Wildfires Loss Contingencies [Line Items] Litigation settlement $ 2,212 November 2018 - Woolsey Wildfires | SCE Loss Contingencies [Line Items] Wildfire insurance coverage 1,000 Self insurance $ 10

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document 6 12 Commitments and 1 Months Ended Months Months Contingencies (Wildfire Ended Ended Legislation) (Details) - USD Jan. Jun. Nov. Jul. Mar. Feb. Jul. ($) Sep. 30, Jun. 30, Dec. 31, 01, 30, 30, 31, 31, 28, 31, $ in Millions 2019 2021 2020 2021 2021 2020 2019 2021 2021 2020 SCE, SDG&A and PG&E | Wildfire Insurance Fund Other Commitments [Line Items] Total annual commitment $ 3,000.0 Insurance fund contribution 10 years amortization period Aggregate annual contributions $ 600.0 $ 600.0 Revenue collected to support bond $ issuance 10,500.0 SCE and SDG&E | Wildfire Insurance Fund Other Commitments [Line Items] Initial Wildfire Insurance Fund 2,700.0 contributions SCE Other Commitments [Line Items] Revenue recovery period 2 years Capital expenditures excluded 518.0 1,600.0 AB 1054 excluded capital 1,600.0 expenditures spent Requested irrevocable order to $ 1,000.0 finance 340.0 SCE | Recovery Bonds Other Commitments [Line Items] Debt $ $ 338.0 338.0 SCE | Wildfire Insurance Fund Other Commitments [Line Items] Initial Wildfire Insurance Fund $ $ 2,400.0 contributions 2,600.0 2,600.0 Insurance fund contribution 15 10 years amortization period years

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Amount to be collected from $ ratepayers 6,100.0 Revenue recovery period 15 years Expected annual contribution $ 95.0 Maximum aggregate requirement to reimburse the insurance fund 0.20% percent Minimum weighted-average equity component authorization (as a 52.00% percent) Initial liability cap $ 3,200.0 SDG&E | Wildfire Insurance Fund Other Commitments [Line Items] Amount to be collected from $ ratepayers 1,300.0 PG&E | Wildfire Insurance Fund Other Commitments [Line Items] Initial Wildfire Insurance Fund $ contributions 4,800.0 Amount to be collected from $ ratepayers 6,100.0

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Commitments and 6 Months Ended Contingencies Jun. 30, 2021 (Environmental Jun. 30, 2020 USD ($) Remediation) (Details) - SCE USD ($) site $ in Millions Jointly Owned Utility Plant Interests [Line Items] Recorded estimated minimum liability $ 259 Environmental remediation regulatory assets 247 Expected recovery from incentive mechanism $ 40 Expected recovery from incentive mechanism (percent) 90.00% Recovery through customer rates $ 207 Recovery through customer rates (percent) 100.00% Environmental remediation expense $ 5 $ 3 Clean up (period) 30 years Expected remediation costs, low end of range $ 8 Expected remediation costs, high end of range $ 22 Material sites Jointly Owned Utility Plant Interests [Line Items] Identified remediation sites (number) | site 26 Minimum estimated liability $ 1 Recorded estimated minimum liability 256 Cost may exceed liability 113 Material sites | San Onofre Jointly Owned Utility Plant Interests [Line Items] Recorded estimated minimum liability $ 171 Immaterial sites Jointly Owned Utility Plant Interests [Line Items] Identified remediation sites (number) | site 14 Recorded estimated minimum liability $ 3 Cost may exceed liability $ 9

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Commitments and 6 Months Ended Contingencies (Nuclear Jun. 30, 2021 Insurance) (Details) USD ($) $ in Millions SCE Loss Contingencies [Line Items] Litigation settlement $ 69 SCE | Insurance Claims Loss Contingencies [Line Items] Limit on retroactive premium adjustments assessment, per year 30 SCE | Insurance Claims | Palo Verde (nuclear) Loss Contingencies [Line Items] Minimum federal requirement of nuclear property insurance 1,100 Federal loss limit, bodily injury and property damage from nuclear incident 13,500 Maximum per incident 65 Maximum per incident annual 10 Maximum per incident, prior events 255 Maximum per incident, prior events, annually 38 SCE | Insurance Claims | San Onofre Loss Contingencies [Line Items] Minimum federal requirement of nuclear property insurance 50 Federal loss limit, bodily injury and property damage from nuclear incident 560 SCE and other owners of San Onofre and Palo Verde Loss Contingencies [Line Items] Litigation settlement $ 88

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Commitments and 36 Months 1 Months Ended 24 Months Ended Contingencies (Upstream Ended Lighting Program) (Details) Mar. 31, Jan. 31, Dec. 31, Dec. 31, - SCE - USD ($) Dec. 31, 2019 2021 2021 2019 2018 $ in Millions Upstream Lighting Program Loss Contingencies [Line Items] Incentives paid to manufacturers $ 91.0 Requested manufacturer incentives $ 92.0 refund Fines 140.0 Remedy offered $ 21.0 Upstream Lighting Program, ESPI Loss Contingencies [Line Items] Incentives received $ 1.3 $ 3.5 CPUC requested award refund $ 33.0

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Equity (Quarter) (Details) - 1 Months 3 Months 6 Months USD ($) Ended Ended Ended $ / shares in Units, $ in Mar. 31, May 31, Jun. 30, 2021 Jun. 30, 2021 Millions 2021 2019 Class of Stock [Line Items] Equity contribution $ 575 Series A Preferred Stock, 5.375% Class of Stock [Line Items] Stock issued (in shares) 1,250,000 Proceeds received, net of offering costs $ 1,200 Preferred Stock, dividend rate, (as a percent) 5.375% Liquidation value (in dollars per share) $ 1,000 Dividend reset period 5 years Margin rate for dividend rate reset (as a percent) 4.698% Redemption amount (in dollars per share) $ 1,000 Redemption amount following change in criteria (in $ 1,020 dollars per share) SCE Class of Stock [Line Items] Capital contributions $ 325 $ 1,200 At-the-market Program (ATM) Class of Stock [Line Items] Stock issued (in shares) 0 0 Aggregate sale price $ 1,500 Aggregate sales price remaining $ 1,300 $ 1,300 401(K) Class of Stock [Line Items] Stock issued (in shares) 153,600 413,300 Proceeds received, net of offering costs $ 9 $ 24 Stock compensation awards Class of Stock [Line Items] Stock issued (in shares) 28,609 212,594 Proceeds received, net of offering costs $ 1 $ 5 In lieu of dividend payment Class of Stock [Line Items] Stock issued (in shares) 73,061 147,915 Proceeds received, net of offering costs $ 4 $ 8

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Accumulated Other 3 Months Ended 6 Months Ended Comprehensive Loss Jun. 30, Jun. 30, Jun. 30, Jun. 30, (Details) - USD ($) 2021 2020 2021 2020 $ in Millions AOCI Attributable to Parent, Net of Tax [Roll Forward] Beginning balance $ 17,223 $ 15,544 $ 15,949 $ 15,496 Pension and PBOP - net loss: Other comprehensive income, net of tax 2 2 4 4 Ending balance 17,313 16,446 17,313 16,446 Accumulated Other Comprehensive Loss AOCI Attributable to Parent, Net of Tax [Roll Forward] Beginning balance (67) (67) (69) (69) Pension and PBOP - net loss: Ending balance (65) (65) (65) (65) Accumulated Defined Benefit Plans Adjustment Pension and PBOP - net loss: Reclassified from accumulated other comprehensive loss 2 2 4 4 Other comprehensive income, net of tax 2 2 4 4 SCE AOCI Attributable to Parent, Net of Tax [Roll Forward] Beginning balance 19,522 18,046 18,650 17,827 Pension and PBOP - net loss: Other comprehensive income, net of tax 1 1 3 3 Ending balance 19,887 18,781 19,887 18,781 SCE | Accumulated Other Comprehensive Loss AOCI Attributable to Parent, Net of Tax [Roll Forward] Beginning balance (39) (37) (41) (39) Pension and PBOP - net loss: Ending balance (38) (36) (38) (36) SCE | Accumulated Defined Benefit Plans Adjustment Pension and PBOP - net loss: Reclassified from accumulated other comprehensive loss 1 1 3 3 Other comprehensive income, net of tax $ 1 $ 1 $ 3 $ 3

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Other Income (Details) - 3 Months Ended 6 Months Ended USD ($) Jun. 30, Jun. 30, Jun. 30, Jun. 30, $ in Millions 2021 2020 2021 2020 Other Income And Expense [Line Items] Total other income and (expenses) $ 76 $ 81 $ 148 $ 133 SCE Other Income And Expense [Line Items] Equity allowance for funds used during construction 25 30 60 51 Increase in cash surrender value of life insurance policies and life 15 23 25 33 insurance benefits Interest income 1 7 1 16 Net periodic benefit income - non-service components 33 27 66 55 Civic, political and related activities and donations (8) (4) (12) (15) Other expense (2) (1) (4) (6) Total other income and (expenses) 64 82 136 134 Edison International Other Income And Expense [Line Items] Net periodic benefit income - non-service components $ (1) Other expense $ (1) Other income 12 12 Edison International | Proterra Other Income And Expense [Line Items] Unrealized gain (loss), pre-tax $ 12 $ 12

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Supplemental Cash Flows 6 Months Ended Information (Details) - USD ($) Jun. 30, 2021Jun. 30, 2020 $ in Millions Cash payments (receipts): Interest, net of amounts capitalized $ 408 $ 369 Income taxes, net (87) Common Stock Non-cash financing and investing activities: Dividends declared but not paid 252 241 Preferred and preference stock Non-cash financing and investing activities: Dividends declared but not paid 12 SCE Cash payments (receipts): Interest, net of amounts capitalized 345 312 Income taxes, net (87) Non-cash financing and investing activities: Accrued capital expenditures 478 450 SCE | Common Stock Non-cash financing and investing activities: Dividends declared but not paid $ 0 0 SCE | Preferred and preference stock Non-cash financing and investing activities: Dividends declared but not paid $ 12

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Related-Party Transactions 3 Months Ended 6 Months Ended (Details) - SCE - USD ($) Jun. 30, Jun. 30, Jun. 30, Jun. 30, Dec. 31, $ in Millions 2021 2020 2021 2020 2020 Related Party Transaction [Line Items] Current insurance receivable due from affiliates $ 0 $ 0 $ 268 Wildfire liability insurance | Wholly-owned subsidiary Related Party Transaction [Line Items] Wildfire-related insurance premiums 160 $ 176 160 $ 176 Current insurance receivable due from affiliates 0 0 268 Prepaid Insurance $ 56 Wildfire insurance expense $ 44 $ 50 $ 87 $ 100

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