m . Mail Log No. 222693 Matthew K. Segers Office 202,872.3484 An Company Assistant General Counsel 202.331.6767 pepcoholdings.com EP9628 [email protected] 701 Ninth Street NW Washington, DC 20068-0001

October 31, 2018

Terry J. Romine Executive Secretary Public Service Commission of William Donald Schaefer Tower 6 St. Paul Street, 16'*' Floor Baltimore, MD 21202-6808

Re: PC44

Dear Ms. Romine:

Enclosed for filing are an original and seventeen (17) copies (five three-holed punched) of Potomac Electric Power Company's (Pepco) and & Light Company's(Delmarva Power)(collectively "the Companies") proposed tariffs to implement the rates for the Residential Time-of-Use Pilot Program (R-TOU-P). The proposed Rate Schedule "R-TOU-P" for Pepco and Delmarva Power is consistent with the Final Report filed in this proceeding by the Rate Design Work Group Co-Leaders on February 9, 2018 (ML#218934), as well as the associated Maryland Public Service Commission letter orders issued in this proceeding on May 7, 2018 and June 12, 2018. The Companies request that these rates he accepted by the Commission with an effective date of April 1, 2019.

The Residential Time-of-Use Pilot Program will run for two years and will have on-peak and off-peak rates for both electric distribution delivery and electric supply or Standard Offer Service (SOS) charges. The SOS charges will be set in a future filing following the SOS auctions. Customers will have the option to remain on the pilot rates and time periods for a full year following the end of the pilot. Any customer that does not make the decision to switch to a new retail supply option or SOS by April 1, 2022 will be placed on SOS by default unless the Commission allows the continuation of the pilot rates.

Please contact me if you have any further questions.

Sincerely,

Matthew K. Segers

Enclosure

cc: All Parties of Record P.S.C. Md. No. 12-Electric Delmarva Power & Light Company Original Leaf No. 46a

MONTHLY CHARGES AND RATES

SUMMER WINTER Billing Months Billing Months SERVICE CLASSIFICATION June Through September October Through May

RESIDENTIAL TIME OF USE PILOT PROGRAM "R-TOU-F' Delivery Service Charges:

Customer Charge $ 8.30/Month $ 8.30/Month Distribution Rates: On-Peak Rate $ 0.198059/kWh S 0.198059/kWh Off-Peak Rate $ 0.024884/kWh $ 0.024884/kWh Administrative Credit Refer to the "AC" Rider Refer to the "AC" Rider Universal Service Program Rate Refer to the "USP" Rider Refer to the "USP" Rider Franchise Tax $0.000620/kWh $0.000620/kWh Environmental Surcharge $0.000145/kWh $0.000145/kWh Bill Stabilization Adjustment Refer to the "BSA" Rider Refer to the "BSA" Rider Empower Md. Charge Refer to the "E-MD" Rider Refer to the "E-MD" Rider RGGI Rate Credit Rider Refer to the "RRC" Rider Refer to the "RRC" Rider Demand Resource Surcharge Refer to the "DRS" Rider Refer to the "DRS" Rider Grid Resiliency Charge Refer to the "GRC" Rider Refer to the "GRC" Rider

Standard Offer Service Phase In Credit / Refer to Rider SOS PIC/DCA Deferred Cost Adjustment

Supply Service Charges with Transmission and Ancillary Services: Transmission Rate $0.0I0980/kWh $0.0I0980/kWh Standard Offer Service for Residential Customers: 06/01/2018-09/30/2018 10/01/2018-05/31/2019 Supply Capacity, Energy and Ancillary Rates: On-Peak Rate $ x.xxxxxx/kWh $ x.xxxxxx/kWh Off-Peak Rate $ x.xxxxxx/kWh $ x.xxxxxx/kWh

Procurement Cost Adjustment Refer to the "SOS" Rider Refer to the "SOS" Rider

Total Supply Service price is the sum of Standard Offer Service, Transmission, Ancillary and the Procurement Cost Adjustment.

Note: The above Delivery Service charges apply to those Customers who have an Electricity Supplier, other than the Company, as their energy provider. The above Delivery and Standard Offer Service with Transmission and Ancillary Service charges apply to those who have the Company as their energy provider.

In addition, to the charges and rates stated above, Maryland Sales Tax shall apply to all applicable services, rendered hereunder, imless the Customer is exempt from such tax. For applicability of the SOS Phase-In Credit / Deferred Cost Adjustment, refer to the Rider SOS PIC/DCA.

Filed October 31, 2018 Effective Usage on and after April 1, 2019

Proposed Delmarva Power &p LightT • I- Company P.S.C.Original Md. No. Leaf 12 - No.Electric 60a

SERVICE CLASSIFICATION "R-TOU-P"

RESIDENTIAL TIME-OF-USE PILOT PROGRAM RATE

A. Availability This rate is available to existing Residential Standard Offer Service customers, who have been selected by Delmarva Power and who affirmatively elect to participate in the pilot program or those who voluntarily decided to opt-in to the rate. ^ ' The following customers are prohibited from being enrolled to this rate: customers with less than 12 months of interval data at their cu^ent premise, and customers who have a medical certification on file with the Company. In addition, the following customers are excluded from being enrolled to this rate for operational reasons: customers without activated advanced metering mirastructure (AMI) capable of registering interval usage; customers currently engaged in aggregate net energy metering under the Aggregate Net Energy Metering "Rider ANEM"; or the community solar pilot program under Community Solar Pilot Program Schedule "CS" and the Communitv Net Energy Metering Pilot Program "Rider CNM".

B. Pilot Term The rate will be effective with the customers' first bill cycle falling on or after April 1 2019 and remain for three years, or until the customer decides to opt-out of the rate, at which time they will be pla9ed on Residential Service Schedule "R". Customers who choose to opt-out of the pilot program prior to the completion of the two years, shall not be allowed to return to the pilot rate.

C. Monthly Rate The monthly charges and rates under this Service Classification are shown on Tariff Leaf No 46a.

D. Standard Offer Service Customers in this Pilot Service Classification who has not exercised their right to purchase its electric supply service from an Electricity Supplier shall be provided Standard Offer Service in accordance with the provisions of Rider SOS, subject to the Company's enrollment rules and tariff provisions. E. Billing Months and Rating Periods • Summer (June 1 through September 30) On Peak hours will be between the hours of 2:00 pm and 7:00 pm, excluding weekends and holidays. • Winter (October 1 through May 31) On Peak hours will be between the hours of 6:00 am and 9:00 am, excluding weekends and holidays. Holidays include New Year's Day, Rev. Martin Luther King's Birthday, Presidents' Day Memorial Day, Independence Day, Labor Day, Columbus Day, Veterans' Day, Thanksgiving Day and Christmas Day, as designated by the Federal Government.

Filed October 31, 2018 Effective Usage on and after April 1,2019

Proposed Delmarva ^Power & p LightT • u Company P.S.C.Original Md. No. Leaf 12 - No.Electric 60b

F. Minimum Bills The minimum monthly bill shall be the Customer Charge.

G. Public Service Company Franchise Tax In addition to the charges provided for in this Service Classification, the Maryland Public Service Company Franchise Tax shall apply to all sales rendered hereunder before the application of the Maryland Sales Tax, unless the Customer is exempt from such tax.

I. Rules and Regulations The Rules and Regulations set forth in this Tariff shall govern the provision of service under this Service Classification.

Filed October 31,2018 Effective Usage on and after April 1,2019

Proposed Electric-P.S.C. Md. No. 1 MD - R -TOU - P Original Page No. 24

RESIDENTIAL TIME-OF-USE PILOT PROGRAM

SCHEDULE "R-TOU-P"

AVAILABILITY Available to existing Residential Standard Offer Service customers, who have been selected by the Company and who affirmatively elect to participate in the pilot program, or those who voluntarily decided to opt-in to the rate. The following customers are prohibited from being enrolled to this rate: customers with less than 12 months of interval data at their current premise, and customers who have a medical certification on file with the Company. In addition, the following customers are excluded from being enrolled to this rate for operational reasons: customers without activated advanced metering infrastructure(AMI) capable of registering interval usage; customers currently engaged in aggregate net energy metering under the Aggregate Net Energy Metering "Rider ANEM"; or participants in the community solar pilot program under Community Solar Pilot Program Schedule "CS" and the Community Net Energy Metering Pilot Program Rider "CNM". The rate will be effective with the customer's first bill cycle falling on or after April 1, 2019 and remain for three years, or until the customer decides to opt-out of the rate, at which time they will be placed on Residential Service Schedule "R". Customers who choose to opt-out of the pilot program prior to the completion of the two years shall not be allowed to return to the pilot rate.

CHARACTER OF SERVICE The service supplied under this schedule normally will be alternating current, sixty hertz single phase three wire 120/240 volts, or three wire, 120/208 volts.

MONTHLY RATE Summer Winter Distribution Service Charge Customer Charge $ 7.80 per month $ 7.80 per month Kilowatt-hour Charge On-Peak $0.14839 per kwhr $0.14839 per kwhr Off-Peak $0.02274 per kwhr $0.02274 per kwhr

Generation and Transmission Service Charges — Customers who do not receive service from an alternative Electric Supplier as defined in the Company's General Terms and Conditions in this Pilot Service Classification will receive Generation and Transmission Services from the Company under the provisions of Rider "SOS"- Standard Offer Service.

BILLING MONTHS Summer - Billing months of June through September. Winter - Billing months of October through May.

Date of Issue: October 31, 2018 Date Effective: Usage on and after April 1, 2019 Electric-P.S.C. Md. No. 1 MD - R "TOU - P Original Page No. 24.1

RATING PERIODS Summer - On Peak hours will be between the hours of 2:00 pm and 7:00 pm, excluding weekends and holidays. Winter - On Peak hours will be between the hours of 6:00 am and 9:00 am, excluding weekends and holidays.

Holidays For the purpose of this tariff, holidays will be New Year's Day, Rev. Martin Luther King's Birthday, Presidents' Day, Memorial Day, Independence Day, Labor Day, Columbus Day, Veterans' Day Thanksgiving Day and Christmas Day, as designated by the Federal Government.

METER READING The hourly readings of the AMI System smart meter will be aggregated in to the On-Peak and Off-Peak periods designated by the Company, to the nearest multiple of the meter constant, and bills rendered accordingly.

GROSS RECEIPTS TAX A surcharge of 2.0408% is applied to the transmission and distribution components of the customer's bill to recover the amount attributable to the Gross Receipts Tax.

GENERAL TERMS AND CONDITIONS This schedule is subject in all respects to the Company's "General Terms and Conditions for Furnishing Electric Service" and the Company's "Electric Service Rules and Regulations."

APPLICABLE RIDERS Standard Offer Service - Residential Administrative Credit Universal Service Charge Recovery Delivery Tax Surcharge Montgomery County Surcharge Maryland Environmental Surcharge Optional Meter Equipment Related Services Bill Stabilization Adjustment Empower MD Charge Residential Direct Load Control RGGI Rate Credit Demand Resource Surcharge Dynamic Pricing - Peak Energy Savings Credit Grid Resiliency Charge

Date of Issue: October 31, 2018 Date Effective: Usage on and after April 1, 2019