MUSCAT ELECTRICITY DISTRIBUTION COMPANY S.A.O.C

Distribution Capability Statement

[2018 – 2020]

MUSCAT ELECTRICITY DISTRIBUTION COMPANY S.A.O.C

Preface

This Distribution Capability Statement is provided by the Muscat Electricity Distribution Company (hereafter MEDC) according to Distribution and Supply Licence Condition number 32 and in accordance to the Distribution Planning code 4.4.

This Statement describes the Distribution System capability over the next three years 2018 -2020. The Statement provides up-to-date Distribution System data to provide customers with the information needed to identify those parts of the system which offer the most suitable opportunities for future connections to the MEDC system and where constraints currently exist, or will exist.

This year we have taken the decision to further provide detailed system data in spreadsheet format. The spreadsheet supplements this capability statement and is available to customers and other relevant stakeholders. We hope this provides our customers and other stakeholders with a transparent and usable platform to assess possible points of connection within the MEDC licenced area and to assess the opportunities it provides.

The board of MEDC has determined this three-year plan to clarify and highlight MEDC’s key priorities over the coming years. The plan will form the basis for the company’s further investments and serve to confirm MEDC’s contributions to the Omani electricity sector.

Eng. Abdullah Bin Said Al Badri

MEDC CEO

MUSCAT ELECTRICITY DISTRIBUTION COMPANY S.A.O.C

CONTENTS

4.8. CONTINUOUS IMPROVEMENT AREAS 18 LIST OF TABLES 2 Bulk Load Details and Modelling 18 33/11.5kV Transformers Tap Changer LIST OF FIGURES 2 Modelling 18 11kV System Modelling 19 1. INTRODUCTION 1 Improved and Updated Motoric Short Circuit 1.1. PURPOSE OF THE STATEMENT 1 Contribution 19 1.2. STRUCTURE OF THIS CAPABILITY STATEMENT 1 Technical Losses Calculation using Power System Models 19 2. PLANNING PHILOSOPHIES AND PRACTICES Maximum and Minimum Scenario Modelling 19 2 2.1. OBLIGATIONS OF THE DISTRIBUTION LICENCE 2 5. CHALLENGES AND OPPORTUNITIES 2.2. REQUIREMENTS OF THE DISTRIBUTION CODE 2 WITHIN THE SYSTEM 20 2.3. DISTRIBUTION SYSTEM SECURITY STANDARDS 2 5.1. NEW CONNECTION APPLICATIONS 20 2.4. SYSTEM VOLTAGES AND CONFIGURATION 3 5.2. SYSTEM CONSTRAINTS AND OPPORTUNITIES 20 2.5. FREQUENCY DEVIATIONS 4 2.6. VOLTAGE WAVEFORM QUALITY 4 6. THE INVESTMENT PLAN 23 2.7. VOLTAGE FLUCTUATIONS 4 6.1. SYSTEM DEVELOPMENT PROJECTS DURING THE 2.8. AUTO-RECLOSING AND SINGLE PHASE PROTECTION PERIOD 2018– 2020 23 OPERATION 4 Zone 1 – (The Eastern Zone) 26 2.9. DESIGN FAULT LEVELS 4 Zone 2 - (The Central Zone) 28 2.10. STANDARD EQUIPMENT SIZES 5 Zone 3 - (The Western Zone) 30 Conductors 5 Transformers 5 Appendix A: Distribution System Capability Switchgear 5 Statement 32 Capacitors 5 Appendix B: DSSS Non Compliances 33 2.11. TECHNICAL STANDARDS 6 2.12. SPECIFICATION OF APPARATUS AND PLANT 6 Appendix C: System Studies Results 35 2.13. EARTHING 6 2.14. VOLTAGE REGULATION AND CONTROL 6 2.15. PROTECTION 6

3. PLANNING DRIVERS 8

3.1. BACKGROUND 8 3.2. ZONE 1 – (THE EASTERN ZONE) 8 3.3. ZONE 2 - (THE CENTRAL ZONE) 8 3.4. ZONE 3 - (THE WESTERN ZONE) 8

4. MEDC DISTRIBUTION SYSTEM 10

4.1. EXISTING DISTRIBUTION SYSTEM 10 4.2. AREA BASED SYSTEM HISTORICAL GROWTH 10 4.3. SYSTEM DEMAND AND LOAD DURATION 11

4.4. SYSTEM DEMAND FORECAST 12 Best Practice Distribution Load Forecasting 12 System Demand Growth 13 4.5. GRID SUPPLY POINTS 13 4.6. DISTRIBUTION SYSTEM ANALYSIS 17

Load Flow Analysis 17 Short Circuit Analysis 17 4.7. TECHNICAL LOSSES 18

MUSCAT ELECTRICITY DISTRIBUTION COMPANY S.A.O.C

LIST OF TABLES LIST OF FIGURES

Table 1 DSSS Classifications and Defined Restoration Times . 3 Figure 1 MEDC Distribution System ...... 9

Table 2 System Nominal Voltages and Tolerance ...... 4 Figure 2 Hourly Demand – Summer Maximum Day Profile 2010 -2017 ...... 11 Table 3 Short Circuit Rating of Switchgear ...... 5 Figure 3 2017 Load Duration Curve ...... 12 Table 4 Standard 33kV conductor Sizes and Ratings ...... 5 Figure 4 System Historical and Forecast Maximum Demand Table 5 Standard 11kV conductor Sizes and Ratings ...... 5 (2006-2020) ...... 14 Table 6 Standard Switchgear Ratings ...... 5 Figure 5 33kV Existing System (2017) ...... 15 Table 7 Summary of Installed and Firm Capacity of MEDC Figure 6 33kV Expected System Development (2018 to 2020) Distribution System – 2017 [up to July 2017] ...... 10 ...... 16 Table 8 Area Wise Compound Annual Growth Rate [CAGR] of MEDC Distribution System ...... 10

Table 9 System Maximum and Minimum Demand in 2017 . 11

Table 10 The CAGR System Load Growth% from 2010 to 2017 ...... 13

Table 11 MEDC System Maximum Demand in MW [Historical and Forecast] ...... 14

Table 12 MEDC System Technical Losses ...... 18

Table 13 New 11kV and LV Customer Applications ...... 20

Table 14 2020 Projected Capacity Constraints in MVA ...... 22

Table 15 Status of the Primary Substations at a glance [2018- 2020] ...... 23

Table 16 Summary of Sponsored Projects ...... 23

Table 17 Summary of Planned Projects in MEDC Distribution System to meet Summer 2018 Maximum Demand ...... 24

Table 18 Summary of Planned Projects in MEDC Distribution System to meet Summer 2019 Maximum Demand ...... 25

Table 19 Summary of Planned Projects in MEDC Distribution System to meet Summer 2020 Maximum Demand ...... 26

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MUSCAT ELECTRICITY DISTRIBUTION COMPANY S.A.O.C

1. INTRODUCTION

1.1. Purpose of the Statement Electricity Transmission Company (OETC), has This Capability Statement is intended to provide an been fully assessed in the development of MEDC’s understanding of MEDC’s 33kV and 11kV Distribution development plans. Where appropriate 33kV load System and to present MEDC’s development plans for transfers from one 132/33kV grid station (GSS) to the 33kV and 11kV Distribution System for the years another have been considered and where this option is 2018-2020. This Statement includes electrical data for not feasible applications for additional 132/33kV GSS the station loads, overhead lines, cable circuits, capacity have been submitted to OETC, resulting in transformers, switchgear and capacitors used in the OETC plans to construct and build additional 132/33kV preparation of Distribution System models for the GSS capacity within the MEDC licence area. power system studies and form the MEDC Distribution 1.2. Structure of this Capability Statement System. The results of the load flow and short circuit Chapter 2 and Chapter 3 provide relevant information studies are presented thereby providing an assessment associated with MEDC’s licence obligations, planning of the capability of the Distribution System. assumptions and technical standards. Chapter 4 The schedule of committed and planned system provides an overview of the Distribution System, development projects on the 33kV Distribution System together with details of the demand profile, projected is presented in Chapter 6. Implementation of these demand forecast, system constraints and a summary of system development projects is necessary to meet the technical analysis of the Distribution System. future forecast demand growth, maintain or improve Chapter 5 summarises the current levels of connection the capability in the Distribution System to meet the activity within the MEDC system and provides an system growth and to address the issues of actual or overview of the opportunities new customers may forecast non-compliance with the Distribution System have whilst identifying the challenges that MEDC face Security Standards (DSSS). Implementation of these currently along with measures to address them. projects will increase the number of 33/11kV primary substations(PSS) providing enhanced opportunities for Chapter 6 provides detail of the development projects new and increased customer connections. proposed over the three-year period 2018 to 2020.

The impact of MEDC’s forecast demand growth and Appendices detail the results of the required Distribution System development projects on the distribution system analysis studies. Transmission System, which is owned and operated by

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2. PLANNING PHILOSOP HIES AND PRACTICES

MEDC recognise that it is fundamental to provide Licence Condition 32 also describes the further sufficient guidance to enable relevant stakeholders and information that needs to be included within the current and potential customers to understand the Capability Statement relating to: quality of supply that they may receive from the • Information on the status of the Distribution Distribution System and to enable any person seeking a System, its capacity and envisaged future needs. connection to the system to be able to understand the • Advising potential customers on parts of the system Distribution System at the intended point of connection. that are best suited to new connections. This Capability Statement briefly identifies relevant • Information on the potential system constraints to conditions of the Sector Law and the associated Planning development. Codes and Security Standards that all regulated entities, • Provide an overview of current system must adhere to. It further outlines the key technical developments. standards to which our Distribution System is designed • Assessment of technical losses. and constructed. The full requirements of Licence Condition 32 are found Royal Decree 78/2004 promulgating The Law for the in Appendix A of this document. Regulation and Privatisation of the Electricity and The intent of this Capability Statement is to provide the Related Water Sector. Article 90 places an obligation on information as stated above in a form that is relevant Distribution Companies to undertake to finance, and useful to the Authority and other stakeholders. operate, maintain, develop and expand the Distribution System in a safe manner, economic and efficient manner 2.2. Requirements of the Distribution Code and in accordance with the relevant performance and The Distribution Code covers all material technical security standards. aspects relating to connections to, and the operation and use of, the Distribution System. The Distribution 2.1. Obligations of the Distribution Licence Code is structured into a number of specific sections. Condition 4 of our Distribution Licence as entitled ‘Implementation of and Compliance with the The Distribution Planning Code (DPC) 2 states that its Distribution Code’ and requires MEDC to become and objectives include for ‘the exchange of information and remain a party to and comply with the provisions of the interaction between Licensed Distributors and Distribution Code. It also requires MEDC to co-operate Distribution System Users concerning any proposed with other Licensed System operators in the development of Distribution System User Systems that maintenance and development of the Distribution Code. are to be connected to the Distribution System’.

Distribution Licence Condition 32 is titled ‘Distribution DPC 4.4 relates to the obligations of MEDC under its System Capability Statement’ and requires MEDC to: Distribution Licence to produce, on an annual basis, the Distribution System Capability Statement relating to the ‘On an annual basis, prepare a statement in a three succeeding years. form approved by the Authority, showing in respect of each of the three succeeding 2.3. Distribution System Security Standards financial years, circuit capacity, forecast power As part of maintaining an adequate electricity supply to flows and loading on each part of its its consumers; MEDC is obliged under its distribution Distribution System and fault levels for each licence to transmission node.’ ‘plan and develop its Distribution System in accordance with the approved Distribution

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MUSCAT ELECTRICITY DISTRIBUTION COMPANY S.A.O.C

System Security Standards’1 and to ‘operate MEDC 33kV system and 33/11kV primary substations fall and maintain a safe, efficient and economic into DSSS classes B to D with the majority being in Distribution System in accordance with the Class C. Security Standards’2. Primary substations in Class B have a maximum demand Table 1 provides a summary of the DSSS classifications. between 2MW and 6MW. Following a first outage the affected load must be re-supplied within 3 hours. This Table 1 DSSS Classifications and Defined Restoration may be achieved by repair and restoration of the faulted Times circuit, manual switching at the 33/11kV primary Demand substation with two or more transformers to re-supply Class First Outage Second Outage Group customers from an alternative transformer or manual Less than 2 switching of the 11kV network feeders to re-supply A Repair Time No Requirement MW customers from an alternative 33/11kV primary

2MW to substation. B 3 Hours* No Requirement 6MW Substations in Class C have a maximum demand Restoration time 6MW to Within 15 between 6MW and 20MW. Following a first outage the C of planned 20MW minutes outage affected load must be re-supplied within 15 minutes. Restoration time 20MW to This is achieved by the system configuration and D Immediately of planned 100MW outage operational control, operating with parallel circuits and Greater remotely operating the circuit breakers from MEDC Immediately, 2/3 E than Immediately of demand** Distribution Control Centre via SCADA. 100MW

*For 11kV networks in remote areas this restoration time may The majority of MEDC 33/11kV primary substations have be extended by the time it reasonably takes for a repair crew to 2 x 20 MVA transformers with an N-1 firm capacity of reach the area with the outage as long as the total restoration 20MVA. These substations fall into the DSSS Class C time will not exceed 6 hours classification.

**Planned Outages area assumed to be restricted to non- 33/11kV primary substations in Class D have a maximum summer periods when due to lower ambient temperatures demand between 20MW and 100MW. Following a first demand is reduced and equipment ratings enhanced outage, the affected load must be re-supplied The DSSS places an obligation on MEDC to restore supply immediately. Immediate restoration means allowing an following a circuit or transformer outage within adequate time for an interruption followed by maximum time limits determined by the total demand restoration through an automated transfer switching within a Demand Group as highlighted in Table 1 scheme with restoration effected within 60 seconds.

A first outage is a fault or planned outage occurring at 33/11kV primary substations with 3 x 16MVA or 3 x any time of the year including the period of maximum 20MVA transformers fall into the Class D classification. demand. A second outage is a fault outage occurring 2.4. System voltages and configuration when an integral part of the system under consideration Distribution Connection Conditions Code (DCC) 4.1 is not available due to planned maintenance. states the following:

2 Licence Condition 31 (4a) and (4b) 1 Licence Condition 31 (4a)

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MUSCAT ELECTRICITY DISTRIBUTION COMPANY S.A.O.C

The voltage on the 33kV, 11kV and LV sides of Voltage (LV) the maximum total levels of harmonic Distribution transformers at connection sites with distortion from all sources is required to not exceed a Distribution System Users shall normally be controlled total harmonic distortion of 2.5%. within the limits of ± 6.0% of the nominal voltage. The maximum negative phase sequence component of The voltage at customer’s terminals shall not vary from the phase voltage on the Distribution System should the system nominal voltage +/- allowed tolerances as remain below 1.0% unless abnormal conditions prevail. shown in Table 2 A maximum value of 2.0% is permitted for phase Table 2 System Nominal Voltages and Tolerance unbalance.

Tolerance 2.7. Voltage Fluctuations Voltage Level +6% -6% Distribution Connection Conditions Code (DCC) 4.4

33kV 34.98kV 31.02kV states the following:

11kV 11.66kV 10.34kV Voltage fluctuations arising from disturbing or 415V 439.90V 390.10V fluctuating loads connected at a Connection Point to the 240V 254.40V 225.60V Distribution System shall not exceed 1.0% of the voltage

2.5. Frequency Deviations level for step changes that may occur repetitively. Any large voltage excursions other than step changes may be Distribution Connection Conditions Code (DCC) 4.2 allowed up to a level of 3.0% provided that this does not states the following: constitute a risk to the Distribution System or to any During normal operating conditions, the nominal System User. Frequency of the Transmission and Distribution Systems 2.8. Auto-reclosing and Single Phase Protection is 50.00 Hz and normally will be controlled by OETC Operation between 49.95 Hz and 50.05 Hz. During exceptional Distribution Connection Conditions Code (DCC) 4.5 steady state conditions, frequency deviations will not states the following: exceed 49.90 Hz to 50.10 Hz unless disturbed circumstances prevail. Under disturbed conditions, Users should be aware that MEDC may use auto- System Frequency could rise transiently to 51.50 Hz or reclosing or automated sequential switching features on fall to 48.00 Hz. the Distribution System. MEDC will on request provide details of the auto-reclosing or sequential switching 2.6. Voltage Waveform Quality features in order that the User may take this into Distribution Connection Conditions Code (DCC) 4.3 account in the design of the User System and protection states the following: arrangements. All apparatus and plant connected to the Distribution Distribution System Users should be aware that the System and that part of the Distribution System at each protection arrangements on some Distribution Systems connection point, must be capable of withstanding the may cause disconnection of one phase or two phases distortions of the voltage waveform in respect of only of a three-phase supply for certain types of fault. harmonic content and phase unbalance. 2.9. Design Fault Levels The maximum total levels of harmonic distortion on the The maximum short circuit withstand levels for the 33kV Distribution System at 33kV and 11kV, from all sources and 11kV distribution system are stated in OES 11- under both normal, planned outage and fault outage General Specifications for Electrical Materials and conditions is required to not exceed a total harmonic Equipment and is shown in Table 3. distortion of 2.0%, with no individual harmonic greater than 1.5% unless abnormal conditions prevail. At Low

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MUSCAT ELECTRICITY DISTRIBUTION COMPANY S.A.O.C

Table 3 Short Circuit Rating of Switchgear The continuous ampere ratings shown in Table 4 and Table 5 are based on typical manufacturers data and de- Voltage Level Rated Short Circuit Capacity rated for the standard installation conditions mentioned 33 kV 25kA (1429 MVA) for 3 sec in OES 1-33kV and 11kV Overhead Lines and OES 2-33kV 11 kV 18.4kA (350 MVA) for 3 sec & Pilot,11kV & LT underground cable. These ratings 11kV (New) 25kA (476 MVA) for 3 sec ensure safe working on our Distribution System given **Note that MEDC has adopted the standard for new 11kV the high temperatures experienced during the summer primary equipment to be 25kA for 3 seconds. maximum demand period.

The 33kV system is earthed via a 12.5 ohm neutral Transformers earthing resistor connected to the neutral point of each Standard 33/11.5kV transformer sizes are specified in grid transformer, thereby limiting the maximum OES 6-33/11kV Transformers as being 1, 3, 6, 10MVA prospective 33kV earth fault current to 1,500 A per ONAN and 20MVA ONAF, although other sizes such as transformer. The 11kV system is solidly earthed. 16MVA do still exist on the system. The overload 2.10. Standard Equipment Sizes capability above the transformer name-plate rating has Conductors been confirmed through modelling3 and supported by a The standard 33kV feeder conductors used by MEDC as limited number of measurements. MEDC has specified in OES 1-33kV and 11kV Overhead Lines and standardized on 20MVA transformers in the urban OES 2-33kV & Pilot,11kV & LT underground cable areas. installations are shown in Table 4. Switchgear

Table 4 Standard 33kV conductor Sizes and Ratings 33kV and 11kV switchgear ratings are specified within OES 14-11kV Indoor Switchgear and OES 15-33kV Conductor Rated De-rated Conductor Size Type Capacity Capacity Indoor Switchgear as shown in Table 6. 33kV 300 sq.mm Cu 435A 387A Cable XLPE (25MVA) (22MVA) Table 6 Standard Switchgear Ratings 33kV 200 sq.mm ACSR 420A (24MVA) Overhead (Panther) Voltage Description Ratings *33kV 150 sq.mm ACSR 351A(20MVA) Overhead (Wolf) 33kV Feeder 600 A *33kV 100 sq.mm ACSR 271A(15.4MVA) Overhead (Dog) 33kV Bus Section 1200 A

* Existing overhead conductor present on system; new lines will typically be 11kV TX Incomer 1200 A constructed of 200sq mm ACSR. 11kV Bus Section 1200 A The standard 11kV conductors utilised by MEDC are 11kV Feeder 400 A shown in Table 5. Capacitors Table 5 Standard 11kV conductor Sizes and Ratings All new 20 MVA primary substations are designed with a Conductor Rated De-rated Conductor Size single 5 MVAr capacitor bank connected to each 11kV Type Capacity Capacity 431A 349A busbar section. 11kV Cable 240 sq.mm XLPE (8.2MVA) (6.7MVA) 374A 303A 11kV Cable 185 sq.mm XLPE The capacitor banks are as specified in OES 13-11.5kV (7.1MVA) (5.8MVA) 11kV 150 sq.mm ACSR 5MVAr Capacitor Banks and consist of 5 x 1MVAr units 351A(6.7MVA) Overhead (Wolf) with one set of capacitor banks connected to each bus 11kV 100 sq.mm ACSR 271A(5.2MVA) Overhead (Dog) section. The aim of the capacitors is to ensure that

3 Based on IEC 60076-7 calculations

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MUSCAT ELECTRICITY DISTRIBUTION COMPANY S.A.O.C

MEDC maintains power factor and voltage to be within Apparatus and plant must be operated within the prescribed limits to start with the 11kV busbars. thermal rating conditions contained in the appropriate standards, specifications, and other relevant 2.11. Technical standards publications, taking into account its intended use. Upon In order that MEDC can operate a safe and efficient request MEDC will provide this information4 electricity distribution system all apparatus and plant associated with the connection to the Distribution 2.13. Earthing System are required to comply with the following MEDC will provide advice on the method of earthing of standards, as applicable (in the following order of the Distribution System, for example, whether it is precedence): connected solidly to earth or through impedance. The specification of associated apparatus and plant of the (a) Health and Safety Rules connected customer equipment must meet the voltages (b) Oman Electrical Standards (OES), which are such that will be imposed on the apparatus and plant as a national standards as may be approved by and amended result of the method of earthing. The method of by the AER as necessary earthing must comply with the requirements of Oman (c) Grid Code Electrical Standards.

(d) Distribution Code Users should take precautions to limit the occurrence and effects of circulating currents in respect of the (e) The standards and recommendations of the neutral points connected with Earth where there is more International Standards Organisation and the than one earthed neutral point. International Electro Technical Commission (IEC); and 2.14. Voltage regulation and control (f) national standards and codes, which are accepted Any extension or Connection to the Distribution System internationally. should be designed so as to not adversely affect the 2.12. Specification of Apparatus and Plant voltage control employed by MEDC on the Distribution The specifications of all connected plant are required to System. MEDC will make information on the voltage allow the safe operation of the Distribution System regulation and control arrangements available if within MEDC’s operational procedures. Details of this requested by the User. can be obtained by contacting MEDC directly. 2.15. Protection Apparatus and Plant must be suitable to use at the MEDC’s system and the system of any User must operating frequency and within the intended operating incorporate protective devices to ensure that apparatus voltage range. This associated equipment should also be and plant with electrical faults are disconnected from suitable to operate to the maximum design short-circuit the system promptly and that the effects of faults on one rating of the Distribution System to which it is connected system do not impose unreasonable risks to other having due regard to fault carrying capabilities including systems. making and breaking duties. As necessary MEDC will To ensure satisfactory operation of the Distribution provide additional details of the system at the point at System, protection systems, operating times, which a specific connection is to be made. discrimination and sensitivity at the ownership boundary must be agreed between MEDC and the User

4 Please contact the customer services team via MEDC website who will direct your enquiry to the relevant dept.

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MUSCAT ELECTRICITY DISTRIBUTION COMPANY S.A.O.C

during the process of application for Connection and may be reviewed from time to time by MEDC with the agreement of the User.

Back-up protection by operation of other circuit breakers or apparatus and plant having a similar function must normally be provided to safeguard the system against a circuit breaker, or apparatus and plant having a similar function, failing to operate correctly to interrupt the fault current on a high voltage system. During the process of application for Connection, MEDC will advise the User if back-up protection is not required.

Users must not use protection or associated equipment to limit the fault current infeed to the Distribution System unless expressly permitted by MEDC to avoid protection operation malfunctioning loading to system assets exceeding short-circuit ratings.

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MUSCAT ELECTRICITY DISTRIBUTION COMPANY S.A.O.C

3. PLANNING DRIVERS

3.1. Background 3.3. Zone 2 - (The Central Zone) MEDC’s electricity Distribution System serves around The Zone 2 region covers the commercial and residential 351,683 customers (as of July’2017) over an areas of Bousher, Al Khuwair, Al Ansab, Azaibah and approximate area of 3,900 sq.km and is divided into Qurum. three geographic zones. Figure 1 represents an overview The number of customers served in the Zone 2 region is of the MEDC Distribution System within the Muscat 102,219 which is approximately 29% of the total Governorate. The characteristics of the Distribution customer population. System in each region differ because of two main parameters: This is largely an established area, which has seen high load growth in previous years and recently the growth 1. The load density and has slowed. Mall of Oman and Convention Centre are 2. The majority type of feeder circuits (i.e. overhead the largest commercial projects in Zone 2 region. or underground). 3.4. Zone 3 - (The Western Zone) The maximum demand recorded for 2017 on the MEDC The Zone 3 Region includes the Muscat International system was 2,348.6 MW (2472 MVA on 31st May 2017 at Airport, Rusail Industrial Area, , Mawalleh, Al Khoud 03:00 PM). and Mabelah areas. The total existing number of 33/11kV primary The number of customers served in the Zone 3 region is substations connected to the System is 170 with a Total 134,204 which is approximately 38% of the total Installed Capacity of 6,119.5 MVA and a firm capacity of customer population. 3,384.5 MVA. The tables identifying each PSS capacity and current demand can be found in the appendices and Rusail industrial area is earmarked for some significant in the spreadsheet that supplements this Capability development projects within this planning horizon and Statement. new areas have been established for new industrial factories in addition to the Knowledge Oasis Muscat 3.2. Zone 1 – (The Eastern Zone) (KOM). There are two major industrial customers The Zone 1 region includes the capital city of Muscat, connected to the 132kV system (Modern Steel and and an extensive rural network, which covers Muscat Steel companies). the wilayats of Amerat and Quriyat. Mabelah area is one of the largest commercial and The number of customers served in the Zone 1 region is residential areas located within the Zone 3 region. Palm 115,260 which is approximately 33% of the total Mall and Boulevard Mall are the major expected customer population. commercial projects in Zone 3 region. These Amerat has seen the highest demand growth within the developments will be in the commercial and residential Zone 1 region with a significant demand growth forecast areas. for the current planning horizon. Mawalleh, Al Khoud and Seeb areas are witnessing Muscat Municipality initiated Muttrah Master Plan to steady demand growth compared with other areas demolish old buildings leading to conversion to new within Zone 3 region. multi-storied buildings in Muscat/Muttrah area by 2030 without any additional major load being forecast.

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MUSCAT ELECTRICITY DISTRIBUTION COMPANY S.A.O.C

Figure 1 MEDC Distribution System

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MUSCAT ELECTRICITY DISTRIBUTION COMPANY S.A.O.C

4. MEDC DISTRIBUTION SYST EM

MEDC is authorized to undertake all regulated activities Figure 5 (later in this section) illustrates the existing of electricity distribution and supply business below MEDC system (2017) 132kV in Muscat area extending across the whole area of Muscat including Seeb, Bousher, Muscat, Muttrah, 4.2. Area Based System Historical Growth Amerat and Quriyat Wilayats. Table 8 provides a summary of the historic demand growth providing the context for demand growth seen in The Distribution System has three nominal voltages; i.e. MEDC system. Over the previous 7 years, MEDC has seen 33kV, 11kV and 415V. significant growth in specific areas6. The Compound Most customers connect at LV (415 Volt) and there are Annual Growth Rate % [CAGR] for the year 2010-2017 has bulk customers connected at 11kV and 33kV. been used to inform our demand forecast going forward to 2020. 4.1. Existing Distribution System The existing Distribution System consists of the following Table 8 Area Wise Compound Annual Growth Rate [CAGR] of [as of July’2017]: MEDC Distribution System • 1000.8 circuit-km of 33kV overhead line; CAGR (%) • 1125 circuit-km of 11kV overhead line; Area 2010 2010 2015 • 1229.2 circuit-km of 33kV underground cable; To To To 2017 2014 2017 • 3207.3 circuit-km of 11kV underground cable; Airport 12.0% 13.2% 2.9% • 28 grid supply points; Amerat 10.5% 9.4% 5.2% • 170 x 33/11.5kV primary substations; Al Ansab 6.6% 8.6% 1.7% • 10,783 x11/0.433kV Distribution Transformers. Azaibah 8.0% 10.1% 1.1% Table 7 provides a summary of the installed and firm Bousher 14.7% 18.7% 7.4% capacity in each zone. Ghubrah South 0.7% -0.6% -2.2% Al Hail 3.3% 3.2% 1.4% Table 7 Summary of Installed and Firm Capacity of MEDC Al Khoud 11.2% 10.6% 0.1% Distribution System – 2017 [up to July 2017] Al Khuwair 6.5% 5.4% 0.3% Max. Installed Firm Out of Mabelah 10.7% 7.8% 4.9% Load Zone Capacity Capacity Firm*5 2017*5 Mawalleh 8.3% 8.8% 2.7% (MVA) (MVA) (MVA) (MVA) Misfah7 - - 10.7%

1 1746 917 19 695.2 MSQ 4.8% 8.2% -1.9% Muscat 0.0% 0.5% -2.1% 2 2059 1170 31.5 917.3 Mutrah -0.6% -0.5% 1.2% 3 2314.5 1297.5 110.2 1107.5 Quriyat Group 9.5% 17.8% 7.7% Qurum 5.8% 7.2% 3.9% Total 6119.5 3384.5 160.7 2720 Rusail 7.0% 3.4% 6.7%

Ruwi 1.9% 3.9% -4.3%

5 Out of firm and Max.Load - based on summation of individual 6 The areas are defined on geographical and electrical primary substations loads occurring at different times. The figure connectivity basis as ratified by the zonal teams. reflects the audited value of DNS. 7 The CAGR% used for Misfah was based on an area with similar load characteristics as area created post 2014.

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MUSCAT ELECTRICITY DISTRIBUTION COMPANY S.A.O.C

CAGR (%) Ramadan. This results in a lack of predictability as to the precise date of future system peaks. For this reason, Area 2010 2010 2015 To To To associated demand transfers are operationally planned 2017 2014 2017 to have occurred before May each year to ensure MEDC Sarooj 1.7% 5.3% -6.5% are in the best position possible to meet regulatory Seeb 8.6% 10.2% 2.6% requirements and ensure quality and security of supply to Wadi Adai -0.5% 0.1% -2.0% consumers. 0.8% 7.4% -6.1% Figure 2 below indicates that from the last 7 years of data 4.3. System Demand and Load Duration [2010 -2017], the load profile on the day of system The Maximum and Minimum Demand for the MEDC maximum demand is generally consistent. This would Distribution System in 2017 is illustrated in Table 9. suggest no unforeseen event has occurred during this period that may have influenced the demand profile Table 9 System Maximum and Minimum Demand in 2017 (with the exception of an abnormal drop @ 19:00hrs in System Load Load Date & Time 2013 which we believe to be erroneous in nature). During Demand (MW) (MVA) 31st May 2017 the past 7 years maximum demand has been seen to Maximum 2348.6 2472 @03:00 PM grown erratically between 2010 and 2014. 05th February 2017 Minimum 463 487 @04:00 AM The maximum demand data is supplemented with the MEDC notes that the date of system maximum demand associated load duration curve shown in Figure 3. Figure has fluctuated throughout the years. System maximum 3 illustrates that over a period of 7 months [Jan-July demand has fallen generally between the second half of 2017], MEDC System Demand has essentially remained May and June except for the year 2015 which could be above 2000 MW for around 11% of the time. The attributed to a high ambient temperature. There does associated distribution and utilisation of MEDC’s not appear to be a direct correlation between maximum distribution assets are seen to be generally in line with demand and the ambient temperature or the timing of common distribution utility practice.

Figure 2 Hourly Demand – Summer Maximum Day Profile 2010 - 2017

System Maximum Day Profile [2010-2017] 2500.0

2200.0

1900.0

MW 1600.0

1300.0

1000.0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Hours

31-May-17 12-Jun-16 05-Jul-15 26-Jun-14 16-Jun-13 20-Jun-12 22-May-11 01-Jun-10

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MUSCAT ELECTRICITY DISTRIBUTION COMPANY S.A.O.C

Figure 3 2017 Load Duration Curve

4.4. System Demand Forecast • Accurate and unbiased actual demand data – careful Accurate and realistic load demand forecasting is critical management of data and forecasting model for the effective operation of the Distribution System and construction based on sound theoretical grounds is the principal driver for capital expenditure. Realistic that closely fits the sample data. assumptions must be made for inherent uncertainties in • Transparency and repeatability – as evidenced by forecasting and the underlying macro-economic factors, good documentation, including documentation of such as the sustained low oil price. the use of judgment, which ensures consistency and minimises subjectivity in forecasts. Load growth can vary from year-to-year and is not uniform across the whole system. It is not unusual to find MEDC also considers the following elements to be parts of the system growing at significantly higher rates relevant to maximum demand forecasting: than for the system as a whole, while other parts of the • Independent forecasts – spatial (bottom up) system can experience periods of low growth or demand forecasts should be validated by independent reduction. system level (top down) forecasts and both spatial MEDC high voltage distribution system operates at 33kV and system level forecasts should be prepared and 11kV, both voltages being standard IEC voltages. The independently of each other. The impact of 33kV system is normally operated with duplicated radial macroeconomic and demographic trends is better while the 11kV system is operated as a radial able to be identified and forecast in system level configuration, normally with interconnection through data, whereas spatial forecasts are needed to normally open points except in the more remote areas. capture underlying characteristics of specific areas The system covers both urban and rural areas and the within the system. Generally, the spatial forecasts characteristics depend on the load density. should be constrained (or reconciled) to system level forecasts; Best Practice Distribution Load Forecasting • Adjusting for temporary transfers – spatial data is MEDC considers the following features are necessary to adjusted for historical spot loads arising from peak produce an accurate demand forecast in line with best load sharing and maintenance, before historical practice: trends are determined;

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MUSCAT ELECTRICITY DISTRIBUTION COMPANY S.A.O.C

• Adjusting for discrete block loads – large new considered saturated with little room for property developments, such as shopping centres and expansion. housing developments, are incorporated into the Significant demand growth is expected in the South of forecasts, taking account of the probability that each Zone 1 and Zone 3, largely due to new developments development might not proceed. Only block loads associated with urban sprawl towards the edge of the exceeding a certain size threshold are included in urban growth zone. As a result of this urban sprawl, we the forecasts, to avoid potential double counting, as expect to see continued strong growth in the Amerat and historical demands incorporate block loads and Mabelah areas. general demand growth. 4.5. Grid Supply Points System Demand Growth By 2020, it is forecasted that there will be 38 grid supply Historical data indicates that the demand rate of growth points within the MEDC licenced area. There are 10 new across MEDCs distribution system has slowed in recent and/or upgraded grid supply points currently in the years. This may be attributed to the sustained low price construction phase. The investment drivers for grid and general macro-economic factors. Over the 2010 to supply points is to relieve existing overloaded (above the 2017 period the CAGR % system-wide load growth was as firm) grid supply points and to provide new 33kV shown in the Table 10. connection points to accommodate new primary Table 10 The CAGR System Load Growth% from 2010 to 2017 substations. MEDC provides annually a demand forecast for five years to OETC. 2010-2017 CAGR system System Maximum Demand load growth % The existing system (2017) and expected system Non-Grid connected customers 5.7% development for the primary substations is updated in Grid connected customers 6.0% Figure 5 and Figure 6[expansion for the next 3 years] Table 11 and Figure 4 shows the historical trend in system maximum demand with the forecast maximum demand over the period 2018 to 2020.

Despite the general slowing in demand growth at the system level, there are areas within the system where maximum demand is forecast to grow well beyond the system average level, while other parts of the system are forecast to experience no load growth or a small reduction in maximum demand. This particularly applies to and Muttrah where the geography of the area (city area predominantly domestic property) can be

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MUSCAT ELECTRICITY DISTRIBUTION COMPANY S.A.O.C

Table 11 MEDC System Maximum Demand in MW [Historical and Forecast]

Actual Demand[MW] Forecast Demand[MW]

System Maximum 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 Demand Excluding Grid Connected 1146 1246 1342 1525 1567 1618 1763 1738 2014 2154 2254 2305 2436 2575 2722 Customers (MW)

Yearly 0.0% 8.7% 7.7% 13.6% 2.8% 3.3% 9.0% 1.4% 15.9% 7.0% 4.6% 2.3% 5.7% 5.7% 5.7% Growth

Including Grid Connected 1146 1246 1342 1525 1567 1618 1763 1738 2014 2184 2304 2349 2580 2728 2892 Customers (MW)

Yearly 0.0% 8.7% 7.7% 13.6% 2.8% 3.3% 9.0% 1.4% 15.9% 8.4% 5.5% 2.0% 9.8% 5.7% 6.0% Growth

Figure 4 System Historical and Forecast Maximum Demand (2006-2020)

3100

2700

2300

1900 MW 1500

1100

700

300 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 Year

Excluding Grid Connected Customers Including Grid Connected Customers

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Figure 5 33kV Existing Distribution System (2017)

Muscat Electricity Distribution Company - 33kV Distribution System (2017) Sea of Oman

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Manomah (P067) Barka (2x20MVA) 125 Mobela STP Main (P140) (2x20MVA) Street Lights (200kVA) Street Lights (200kVA) Street Lights (200kVA) Mobella South-8 Mobella South03 1 (2x20MVA) (P157) 1 (3x20MVA)

Palace Mobella -2 Communication (P033) Sea of Oman (1MVA) Mebelah Shabiya (A’Salam) RGO Camp (P060) (P034) (2x20MVA) 250 (A & B) ff o (1x5MVA)

1 Old Mabelah (P059) 4 (2x20MVA) H- P Mabelah-C th u o (P064) S 2) lla 6 (2x20MVA) e 0 ff b (P o o A) M ff V Off Mobela-A o 0M 1 x2 3 (P063) ( Wadi Al (2x20MVA) Al Khoud Shabiya 1 Arash (P046) (P115) (2x20MVA) (2x20MVA) Wadi Bahayis RGO) Al Khoud PH-7 (P098) Ghubrah North Seeb Grid (2x20MVA) Mobella South (P154) (P023) (P061) (GP08) 1 (3x20MVA) (2x20MVA) Wadi Al Lawami (3x20MVA) (2x20MVA) Off Diplomatic City (P117) (P022) Azaibah North-2 Sultan School (2x20MVA) (3x20MVA) (P012) (P029) Ghubrah North-2 (2x20MVA) Al Hail South-2 (2x20MVA) 125 Sur Al Hadid (P153) (P149) Mobelah Grid (3x20MVA) (P116) ff 250 (3x20MVA) (GP04) Al Khoud PH-6 o (2x20MVA) New Al Khoud (2x20MVA) Mobella -1 (P049) Mobella South PH-7 (2x20MVA) (P047) Hail North-1 (2x20MVA) (P141) (P027) PDO Sea of Oman Al Hail South-1 (2x20MVA) Ghubrah GPS (2x20MVA) Seeb (P030) (P144) Mawaleh-C ff (P166) (4x20MVA) o (2x20MVA) Muttrah Store Botanic Garden (P072) (2x16MVA) Mabelah Phase 5 (3x20MVA) City Center A & B (P085) (P016) Mabelah Industrial (P190) (P073) Al Hail North-2 125 Darsait (2x20MVA) (2x20MVA) (P191) Mawalleh (1x6 MVA) Mawalleh-B (2x20MVA) (P028) North Ghoubrah (P018) 4 (1x6 MVA) (2x20MVA) (P071) South (2x20MVA) 100 11kV Waive Load Jabrooh (3x20MVA) (P041) (3x20MVA) Mawalleh-A A & B Mawalleh North (P070) (P069) (2x20MVA) Rusail-B 250 (2x20MVA) (P101) Azaibah j (2x10MVA) Azaibah North-3 South1-A la (P013) Airport Height-1 Falaj Fa Sea Port (3x20MVA) (P014) Royal Flight (P001) (2x20MVA) Azaibah North-1 (P178) (P086) (P100) (2x20MVA) Azaibah (P011) 125 (2x6MVA) Mawaleh Airport Height-2 (2x16MVA) (2x20MVA) South 1-B 1 (2x20MVA) South Grid (P002) (2x20MVA) (P147) (GP05) (3x20MVA) Al Khoud PH-3 (2x20MVA) Airport Height-3 (P048) (P003) MOD (2x20MVA) 125 (2x20MVA) Khuwair South (P143) MOD Technical College Tilal Al Khuwair Ruwi Office (P052) (1x6MVA) (P081) Airport Height-4 (P055) (P108) (3x20MVA) (2x20MVA) (2x20MVA) (P004) (3x20MVA) Bousher Grid SQU-1 SQU-3 (2x20MVA) (GP02) (P122) (P160) Private Factory Ghala-1 (2x20MVA) Bait Al Falaj (3x16MVA) (3x20 MVA) Al Khuwair 17/1 (P106) SQU-2 Airport Height-5 Airport (P015) (P050) (P142) (2x20MVA) CBD Primary (3x20MVA) (2x20MVA) (P123) (P151) (2x20MVA) (2x16MVA) (P173) 1 Rusail Industrial-1 (2x20MVA) Heights Oman Exhibition 250 (P165) (3x16MVA) (P103) Rusail Industrial-2 (3x20MVA) (2x16MVA) (P104) (2x20MVA) 1 Boshar-1 Rusail Industrial-3 Al Ansab STP (P009) (P099) Rusail (P104) (2x20MVA) A&B (2x20MVA) Muttrah 125 (2x20MVA) 250 2 outh0 (A&B) h S ) aiba MVA Az (3x20 l a Ghala 250 it sp o ) H 4 ) Al Ansab-2 l 2 A Rusail Housing ya 0 V (A & B) P M (P008) o 0 R ( 2 (P056) x 6) (2x20MVA) (3 2 Qurum-1 0 (2x20MVA) P Water ( (P093) -1 Old Airport th Qurum-2 Information City Department 2 u (2x16MVA) Waljah h0 o A) (P107) (P102) Rusail Industrial-4 MOD Al Ansab t S V (P094) (P037) u h (2x20MVA) (P130) So a 0M (2x16MVA) (2x20MVA) (1x1MVA) (P158) (P167) ) r x2 h A b 3 (2x20MVA) ra V u ( (3x20 MVA) (2x10 MVA) b M h b 1 u 0 G Lulai nsa h x2 Qasr Al Alam Al A G (3 Al Jifnain 07) (P095) (P090) (P0 ) (P042) MVA (2x20MVA) Orpic (2x20 (2x20MVA) (1x6MVA) M.B.D South (P192) Ghala 02 Holiday Inn (P075) 2x6 MVA (P156) (2x20MVA) ff (P051) Rabiat Al qurum o (3x20 MVA) Misfah (3x20MVA) (P096) W.K (P119) 125 1 (2x20MVA) (2x6MVA) Cement Cement Factory Khuwair North MSQ-1 Sarooj-Shati Al A&B Housing off ROP Qurum 125 3 (P079) (P054) (P083) MSQ 02 (2x31.5 MVA) (3x20 MVA) (P111) Ruwi Valley (P088) (2x20MVA) (2x20MVA) (P110) (P155) Majlis Oman (2x5MVA) off (2x20MVA) (2x20MVA) (P174) (P066) 1 Intercontinental (3x20 MVA) (2x20MVA) Khuwair 25 250 (2x20MVA) (P053) (P109) Qurum Wadi Al Kabir Height (2x20MVA) (2x20MVA) Barr Al Jissa off (P128) Ruwi Markit Al Misfah OCP-1 (P044) Al Misfah Al Khuwair School (2x20MVA) (P076) (2x20MVA) (P078) (P080) (P146) (2x20MVA) (1x0.5MVA) (3x20MVA) (3x20MVA) Almona Wadi Al Kabir Workshop Al Misfah OCP-2 (P084) 250+ Royal Office Wattaya (P126) Saraya Bandar (P176) (2x6MVA) (2x20MVA) 125 (P097) Khoula Hospital (P131) (P145) (2x20MVA) (2 x1MVA) (2x20MVA) (P132) alam (3x20MVA) Ali Al Shihani Wadi Al Kabir Housing ts Al S MSQ (3x20MVA) High 135) Digital TV Studio (P127) Yitti ur (P (P125) VA) Kho VA) (1x5MVA) 2x6M Al (1+6M Al Awabi (P039) (2x20MVA) (1x6MVA) ( VA) kit A & B Bustan Palace (200K Yan (P139) Information City-2 1 3) (P017) (P089) (P13 (3x6MVA) MSQ Grid (P038) tti VA) (2x16MVA) (1x6MVA) Yi ) (1+6M (GP06) (2x20MVA) 34 P1 A) 1 (2x20MVA) ( V 3M 1 iran (2x Kha Al Hamriya ff 5) o (P04 (P035) VA) (2x20MVA) (2x3M Legend 125 Wadi Adai 1 (P175) Hussan Yiti 125 (2x20MVA) 132/33kV Grid Station with Firm Capacity(MVA) (P169) Al Nahdah W. Adai (2x6MVA) Amerat-1 Jabal Seiffah Amerat Heights (P006) (2x20MVA) (P005) 125 (P159) 125 New 132/33kV Grid Station with Firm Capacity(MVA) (P152) (3x20MVA , 2019) (2x16MVA) 1 (3x20MVA) (3x20MVA) 1 ahaj n l Al M O ff A 36) o di (P1 VA) 1 a h Yitti 125 Upgrading 132/33kV Grid Station with Firm Capacity(MVA) (2x6M W ay M 9) 1 2 ) Post Office f p. P1 VA f 1 em ( M o j-2 T ) x3 (P150) aha MVA (1 Al M (1x6 (3x20MVA) ff 100 132/11kV Grid Station with Firm Capacity(MVA) 1 o (1x6MVA) Amerat-2 250 33/11kV Primary Station (2018) Sayh Dhabiy Sayh Dhabiy02 Amerat (2x20MVA) (P118) Shifted 33/11kV Primary Station (2x16MVA) Quryat off A &B off (P091) (2x20MVA) Upgrading 33/11kV Primary Station o ff Al Atkiya ff off o 1 (P182) New 33/11kV Primary Station Madinat Nahdah (1x6 MVA) (P065) 1 (2x20MVA) Shihbari (P092) ff Private 33/11kV Primary Station r o aji (2x20MVA) H 1) 03 ) (P VA Private Shifted 33/11kV Primary Station 1 6M ff Tunis Heim (2x o (P137) Dhaghmar (1x3MVA) off ff Private Upgrading 33/11kV Primary Station o (P021) (3x6MVA) 1 New Privet 33/11kV Primary Station

off ABS ( existing Off Point) t 125 125 loo ah ) t J 40 ) Jahloot a 0 VA 33kV RMU/ C.B ( proposed Off Point) (P M y x6 r ya (2 u GTO Si ) 20 ) ht Q (1x0.2MVA) 1 VA t Lig (P M tree Direct Connected Transformer x3 S 0) (2 (P02 ) Royal Camp Debah MVA (0.2 (P170) Al Masarat (P114) Hail Ghaf (P068) Sawaqim-2 (1x6MVA) (P036) (1x6MVA) 132 kV Line ff (2x10MVA) Sawaqim-1 (P113) o (2x6MVA) 1 (P112) Note: 1 (2x6MVA) (1x6MVA) New 132 kV Line For 3x20 MVA primary substations, all connection lines are Al GTO Dibab Al Mazara di (1x0.2MVA) Prepared by Planning Department Arqi a en either two circuits or three circuits except where indicated (P074) W ye Wadi Arabian (P019) rb 4) (2x6MVA) 33 kV Line (P121) ff A 2 A) (1x6MVA) This diagram only for planning purpose o (2x6MVA) P1 V (1x3MVA) 1 ( 6M on single lines as one or more circuits. (1x New 33kV Lines

MEDC Distribution Capability Statement (2018-2020) – V2.2 15

MUSCAT ELECTRICITY DISTRIBUTION COMPANY S.A.O.C

Figure 6 33kV Expected Distirbution System Development (2018 to 2020)

Muscat Electricity Distribution Company - 33kV Distribution System (2018-2020) Sea of Oman

N

Barka 125 Main Mobela STP (P140) (2x10MVA) Street Light (200kVA) Street Light (200kVA) Street Light (200kVA) Mobella South (P061) Mobella South-8 1 (3x20MVA) (P157) 1 (3x20MVA) 2020 Palace Mobella South09 Communication (P184) Mobella -2 (P033) (3x20MVA) Manomah 20 Sea of Oman 20 (P067) (1MVA) Mebelah Shabiya (A’Salam) (P060) (2x20 MVA) 0 2 0 (3x20MVA) 2 (A & B) 2020 250 ff o 2 RGO Halban Camp 0 1 Palm Mall (P034) 8 0 (P168) 20 19 2 20 (1x5MVA) 20 0 2 (3x20MVA) 1 0 Old Mabelah 2 1 9 2020 (P059) -4 (2x20MVA) H P Mobella South Ph06 Mabelah-C th u (P185) (P064) o ) S 2 (3x20 MVA) 6 la 0 f (3x20MVA) el P f b ( o 0 o ) 202 A M f V f M Halban Off Mobela-A o 0 1 x2 Al Khoud New Seeb 05(Boulevard) (P063) (3 250 (P187) (P186) Wadi Al (3x20MVA) Al Khoud Shabiya (2020) 1 (3x20 MVA) (3x20MVA) Arash (P046) (P115) (2x20MVA) (2x20MVA) 2 0 1 Wadi Bahayis 9 20 RGO) 20 9 1 0 2 (P098) Al Khoud PH-7 9 Ghubrah North 1 Seeb Grid 1 0 (2x20MVA) (P154) (GP08) 2 Wadi Al Lawami (P023) 1 (3x20MVA) (2x20MVA) (3x20MVA) Off 2018 (P117) Diplomatic City (3x20MVA) (P022) Azaibah North-2 Sultan School (3x20MVA) Al Hail South-2 (P012) (P029) Ghubrah North-2 2019 (2x20MVA) (2x20MVA) 20 (P153) 20 125 Sur Al Hadid (P149) Mobelah Grid (3x20MVA) (3x20MVA) (P116) 250 (GP04) Al Khoud PH-6 (2x20MVA) (3x20MVA) New Al Khoud Hail North-1 (P049) (P027) (2x20MVA) (P047) Mobella -1 (2x20MVA) (2x20MVA) ff Mobella South PH-7 o PDO Sea of Oman Al Hail South-1 Ghubrah GPS (P141) Mawaleh-C Seeb (P030) (P144) (3x20MVA) (P072) (P166) (4x20MVA) (2x20MVA) (2x16MVA) Muttrah Store Botanic Garden (3x20MVA) 8 1

8 A & B 0 Mawalleh (P085) 1 Mabelah Phase 5

Hail North-2 2 (P016) 0 City Center 2 250 (2x20MVA) Mabelah Industrial (P190) (P028) North Grid Darsait (2x20MVA) (P073) (2019) (P191) (2x20MVA) (GP01) (1x6 MVA) Mawalleh-B Mawalleh (2x20MVA) Mawalih Ghoubrah (P018) 4 (1x6 MVA) 2018 (3x20MVA) (2x20MVA) ROP Dog (P071) 125 2018 Jabrooh Kennel (3x20MVA) South A & B North (P041) (2x6MVA) (3x20MVA) Mawalleh-A Mawalleh North 201 (P070) 2020 8 (P069) (2x20MVA) Rusail-B (2x20MVA) j 0 250 (P101) 2 a 0 018 l 3 2 2 (2x10MVA) Azaibah North-3 Azaibah South1-A Fa Mawalleh (P013) Airport Height-1 (P014) Falaj l Sea Port (3x20MVA) A South05 Royal Flight (P001) (2x20MVA) Azaibah North-1 (P178) (P086) (3x20MVA) (P100) (2x20MVA) (P011) (2x16MVA) 125 (2x6MVA) Mawaleh Airport Height-2 Azaibah South 1-B (2x20MVA) 1 (3x20MVA) 1 South Grid (P002) (P147) (2x20MVA) (GP05) (3x20MVA) Al Khoud PH-3 (2x20MVA) Airport Height-3 Khoudh 9 (P048) 1 (P003) 0 MOD 250 (2x20MVA) 250 2 (2x20MVA) 9 1 0 Khuwair South (P143) Ruwi Office (2020) MOD Technical College (2019) 2 (1x6MVA) (P081) Airport Height-4 Tilal Al Khuwair (P052) (P108) (3x20MVA) (2x20MVA) (2x20MVA) (P004) (P055) Bousher Grid 9 1 SQU-1 (2x20MVA) 0 (3x20MVA) o 2 (GP02) f Private Factory (P122) Airport f Ghala-1 (2x20MVA) Bait Al Falaj (3x16MVA) Al Khuwair 17/1 (P106) SQU-2 SQU-3 Airport Height-5 (P015) (P050) (P142) (2x20MVA) CBD Primary (3x20MVA) (2x20MVA) (P123) (P160) (P151) Heights (2x20MVA) (2x16MVA) Azaiba South New (P173) 2 1 (3x20MVA) (2x20MVA) Oman Exhibition 2020 Rusail 0 Rusail Industrial-1 250 2 0 (P189) (3x16MVA) (P103) (P165) Rusail Industrial-2 (A & B) (3x20MVA) (2x16MVA) 2 (3x20MVA) 0 (A&B) (P104) 1 ROP Al Khoud (2x20MVA) 8 1 Boshar-1 (P161) Riyam 20 Rusail Industrial-3 ROP Al Ansab STP 3 (2x20MVA) 18 (P104) Hospital (P009) A&B (P099) Rusail08 (2x20MVA) (2x20MVA) (2x20MVA) (3x20MVA) Muttrah 125 (KOM) 2018 250 2019 (P164) (3x20MVA) Ghala 250 al it (2019) sp f o ) of H ) (A & B) Al Ansab-2 l 4 A Rusail Housing a 2 V y 0 M (P008) o (P 0 R 2 ) (P056) x 6 (2x20MVA) (3 2 Qurum-1 b 0 (2x20MVA) nsa P Water Al A ( (P093) OD ) 1 M MVA - Old Airport Department (2x10 th Qurum-2 (2x16MVA) Information City u ) (P107) Waljah 1 1 o A (P102) ab S V (P094) (P037) ns M (2x20MVA) (P130) Al A f h 0 (1x1MVA) of ra 2 (2x20MVA) (2x20MVA) Rusail Industrial-4 07) b x (2x20MVA) (P0 VA) u (3 x20M h (P158) (2 G Lulai Qasr Al Alam (3x20MVA) Al Jifnain (P095) 2 0 (P090) 019 1 (P042) 9 2 (2x20MVA) 9 01 (2x20MVA) (1x6MVA) 2 M.B.D South Holiday Inn (P075) 9 Misfah 01 (2x20MVA) ff Orpic 2 9 (P051) o 01 Rabiat Al qurum 2 (3x20MVA) Sidab (P192) 2019 (P096) la W.K (P119) 125 2x6 MVA Ghala-2 1 1 (2x20MVA) a 250 (2x6MVA) (P156) h s G t 2019 A&B Cement Cement Factory (3x20MVA) h 19 Khuwair North MSQ-1 Sarooj-Shati Al MSQ-2 ig 20 off ROP 125 Housing (P079) 2 Qurum (P155) 3 e ) 01 (P054) (P083) (P088) (2x31.5MVA) (2x20MVA) H B 9 (3x20MVA) (2x20MVA) (P111) (P110) (3x20MVA) Ruwi Valley Majlis Oman (2x5MVA) off & (2x20MVA) (2x20MVA) (P174) 9 (P066) 1 (A Bousher-2 Intercontinental 201 (2x20MVA) Mall of Oman Khuwair 25 250 (2x20MVA) (P163) 2 (3x20MVA) (P053) 0 (P109) Sarooj04 Qurum (3x20MVA) 1 9 Wadi Al Kabir Height Barr Al Jissa (2x20MVA) (2x20MVA) (P181) off (P128) Ruwi Markit Al Misfah OCP-1 (3x20MVA) (P044) Al Misfah Al Khuwair School (2x20MVA) (P076) (2x20MVA) (P078) (P080) (P146) (2x20MVA) (1x0.5MVA) (3x20MVA) (3x20MVA) Al Muna Wadi Al Kabir Workshop Al Misfah OCP-2 (P084) 250 Wattaya (P126) Saraya Bandar (P176) (2x20MVA) Royal Office (2x6MVA) (2018) Khoula Hospital (P131) (P145) (2x20MVA) Yiti (2 x1MVA) (P097) (P132) alam (3x20MVA) (2x20MVA) Ali Shihani Wadi Al Kabir Housing ts Al S MSQ (3x20MVA) High 135) (P127) Yitti ur (P (P125) VA) Kho VA) Digital TV Studio 2x6M Al 1x6 M Al Awabi (2x20MVA) (1x6MVA) ( VA) ( kit 9 Qantab 00K Yan 1 A & B (P039) Bustan Palace (2 0 1 ) (P139) 2 (1x5MVA) 133 Information City-2 (P017) (P089) (P ) (3x20 MVA) i MVA MSQ Grid (2x16MVA) tt 1x3 (P038) (1x6MVA) Yi ) 1x1 + (GP06) (2x20MVA) 34 ( P1 ) 1 (2x20MVA) ( VA 3M 1 Al Hamriya (2x off (P035) (2x20MVA) Legend 125 Wadi Adai 1 an Amerat04 (P175) Khair Hussan Yiti 5) 125 (P180) (2x20MVA) (P04 132/33kV Grid Station with Firm Capacity(MVA) 18 VA) (3x20MVA) 20 (P169) x3M Al Nahdah W. Adai (2x6MVA) (2 Amerat-1 Amerat Heights (P006) (3x20MVA) (P005) 125 New 132/33kV Grid Station with Firm Capacity(MVA) 1 Jabal Seiffah 125 (P152) (2x16MVA) (3x20MVA) 1 (P159) (3x20MVA) 9 1 ahaj n 0 l M f l 2 A O f A 136) o di (P VA) 1 a Yitti 125 Upgrading 132/33kV Grid Station with Firm Capacity(MVA) (2x6M W yh Ma ) 9 9 1 1 12 ) Post Office 2 0 ff p. P VA 0 2 1 em ( M 1 o -2 T ) x3 (P150) 9 ahaj MVA (1 Al M (1x6 (3x20MVA) ff 100 132/11kV Grid Station with Firm Capacity(MVA) 1 o Amerat-2 (P177) 2019 (1x6MVA) 250 2018 Amerat-3 (P179) 33/11kV Primary Station (2019) Seih Dhabi (3x20MVA) Sayh Dhabiy02 Amerat (2x20MVA) (P118) Shifted 33/11kV Primary Station (2x16MVA) Quryat off A &B off (P091) (2x20MVA) Upgrading 33/11kV Primary Station o ff ff off Al Atkiya o 1 (P182) Dhaghmar IWP Madinat Nahdah New 33/11kV Primary Station (1x6 MVA) (132/11kV) (P065) 1 (2x20MVA) Shihbari ff (P092) o 100 Existing Private 33/11kV Primary Station jir (2x20MVA) Ha (2017) 1) 18 03 A) 20 (P MV Private Shifted 33/11kV Primary Station 1 x6 ff Tunis Heim (2 o 18 ) (P137) 20 A MV Dhaghmar 1 (1x3MVA) off 20 ff Private Upgrading 33/11kV Primary Station (2x o (P021) (3x6MVA) 2018 1 New Private 33/11kV Primary Station

off ABS ( existing Off Point) 2018 125 ot 125 t hlo Ja 0) 2018 a 04 A) Jahloot iy 33kV RMU/ C.B ( proposed Off Point) (P MV r x6 u ya (2 ROP Saleel GTO Si ) (2x6MVA) Q 0 ) t (1x0.2MVA) 12 A Ligh (P MV treet Direct Connected Transformer x3 S ) (2 (P020 18 A) Royal Camp 20 Debah MV (1x3 (P170) Al Masarat (P114) Hail Ghaf (P068) Sawaqim-2 (1x6MVA) (P036) (1x3MVA) 132 kV Line ff (2x10MVA) Sawaqim-1 (P113) o (2x6MVA) 1 (P112) (1x6MVA) Note: 1 (2x6MVA) New 132 kV Line For 3x20 MVA primary substations, all connection lines are GTO Dhabab Prepared by Planning Department Al Mazara (1x0.2MVA) Wadi Al Arbyeen either two circuits or three circuits except where indicated Arqi (P074) (P019) (P124) (2x6MVA) 33 kV Line (P121) ff (1x6MVA) This diagram only for planning purpose o (2x6MVA) on single lines as one or more circuits. (1x3MVA) 1

New 33kV Lines

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4.6. Distribution System Analysis Short Circuit Analysis MEDC perform associated system studies to ensure the MEDC carries out short circuit studies to establish the distribution system is safe, efficient and provides the capability of equipment to withstand three phase required security of supply to its connected customers. maximum prospective fault current levels.

Load Flow Analysis The principal source of fault currents is the generation The planning tool adopted for system modelling and system connected to the transmission system with the studies is PSS®SINCAL. The models are built by fault current contribution to the MEDC Distribution representing the 33kV system on an electrical System via the 132/33kV Grid Station transformers. The connectivity basis. The system created in the power source contribution in the power system models have system model contains network topologies and system been updated to reflect the fault level infeeds at 33kV details in terms of nameplate transformer impedances, as provided by the OETC’s 2017 Capability Statement conductor types and lengths and loads. The models are which covers up the transmission system updated to reflect modifications and additions to the developments up to 2021. system including the addition of recently The system configurations prepared for short circuit commissioned Grid Stations and Primary Substations. studies in each year are based on the current standard The load demands are modelled as lumped loads operational arrangements: connected to the main 11kV bus bars. The recorded • maximum demands per primary of 2017 have been For all the 2x20MVA PSS, the 33kV bus section circuit breakers are normally open. used to update the model files. • For all the 2x20MVA PSS, the 11kV bus section Load flow analysis has been undertaken to determine circuit breakers are normally closed wherever the active and reactive power flows in the system. This total loading is within the firm capacity of the provides component loadings for transformers and respective primary substation. For loadings above circuits along with the voltage profile at the system the firm capacity, the 11kV bus section circuit buses/nodes under normal circuit operation. The load breakers are normally open. flow simulations have been carried out for existing and • For all 3x20MVA PSS, both 33kV bus section circuit future 3 years system maximum loadings (2018 to breakers are normally open. 2020). • For all 3x20MVA PSSs, one 11kV bus section The power factor of the lumped load connected to the breaker is considered closed and one as open, 11kV bus bars on each primary substation is taken as when the load is within the firm capacity. Both per the actual recorded by the SCADA system for 93 11kV bus section breakers are considered open in primary substations. The power factor for the case of station loading beyond the firm capacity. remaining 77 substations, where only the feeder The design short circuit withstand and breaking ratings Ampere values were available, is considered as 0.92 of the 11kV switchgear components at new and based on a calculated weighted average power factor upgraded primary substations have been revised to from the 93 primary substations from 1st May to 25 kA for 3 sec to comply with system requirements, 31st July. whereas for the older existing 11kV switchgear, the The results are summarised in tabular form in rated value is 18.4kA for 3 sec. Appendix C and available in a downloadable excel file Currently, in the absence of accurate fault level that supplements this Capability Statement. contribution data on low voltage (LV) side, a worst case allowance is made for LV motor fault contribution majorly due to the nature of the air conditioning load

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MUSCAT ELECTRICITY DISTRIBUTION COMPANY S.A.O.C

prevalent across the MEDC’s distribution system. A (33kV, 11kV and LV) and then summate the total losses motoric to static load type ratio of 80/20 (in to obtain a percentage technical loss for each primary percentage) is considered using the system maximum substation. and minimum demands figures. An allowance of 100 The percentage technical losses are then apportioned Amp fault infeed per 1MVA of connected air according to the proportion of total system energy conditioning load is allowed to ensure adequate supplied by each substation. A summation of all headroom for short circuit withstand capability. apportioned technical losses is then presented as the The maximum prospective fault current values are system % technical losses. The summated technical shown in the tables in Appendix C. losses for the Distribution System are calculated to be 4.73%. The calculation of maximum prospective fault current is compared against the rated withstand for primary The breakdown of technical losses by voltage is as equipment. shown in Table 12 below.

The maximum prospective fault current [initial Table 12 MEDC System Technical Losses symmetrical] is calculated as high as the rated capacity System Component Loss Value of the primary equipment (switchgear) at the following 33kV primary substations. 33kV Circuits 0.31 % Primary Transformers 0.45 % 1 Bousher Grid - GP02 11kV Circuits 0.49 % 2 Mabelah Grid - GP04 Distribution Transformers 2.37 % except at Seeb Grid where it exceeds by 3.2% on the LV network 1.11% switchgear rating. Total 4.73%

For all the above PSS, operational restrictions are in 4.8. Continuous Improvement Areas place to manage the fault levels. MEDC has identified and is working on a number of continuous improvement areas as listed below as more All the above primary substations are in close electrical accurate data starts becoming available: vicinity of their respective grid stations. The breaking fault currents on these stations are however within the Bulk Load Details and Modelling limits of 25kA. Currently, we are in process of collating the details of

The fault current levels at all other primary substations existing 33kV and 11kV bulk customers to incorporate are within their rated breaking capacities. as appropriate, the details of their power systems in our models for impact assessment. For new 4.7. Technical Losses applications, this will be used for performing point of The technical losses in the MEDC distribution system is connection studies. a factor of the configuration of the system, type and 33/11.5kV Transformers Tap Changer specification of equipment and the % loading on Modelling equipment. Technical losses are attributed to copper The data on accurate operational status of on-load tap and iron losses in the 33kV feeders and 33/11kV changer installed on primary substation transformers primary transformers, 11kV feeders and distribution will be included in power system models. This will transformers and the LV distribution system. In line enable MEDC to improve the accuracy in calculations with standard international practice for utilities where for all system studies. the system is not fully modelled we calculate the losses for specific network elements (transformers, overhead lines and cables) across the different voltage levels

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MUSCAT ELECTRICITY DISTRIBUTION COMPANY S.A.O.C

11kV System Modelling

MEDC intends to enhance its power system models to include 11kV system upto the main LV bus bar. This will enable us to improve our existing studies (like short circuit analysis and carry out additional system studies on PSS®SINCAL like technical losses).

Improved and Updated Motoric Short Circuit Contribution

We aim to assess the motor fault contribution onto

MEDC’s system at LV due to the connection of typical larger scale centralised commercial air-con units by obtaining typical details of such systems from our larger commercial customers and preparing sample grid connection impact studies. Furthermore, the assessment studies for MV motor fault contribution from larger industrial customers in relevant parts of the system will be undertaken to improve the understanding of the actual short circuit contribution.

Technical Losses Calculation using Power System Models

It is our intention to modify the losses calculation approach in the future by directly utilising the PSS®SINCAL model to calculate the system losses. This will require the development of PSS®SINCAL models for the 11kV system as well as that already established for the 33kV system.

Maximum and Minimum Scenario Modelling

Currently, MEDC performs system analysis for maximum demand conditions only. It is planned to carry out minimum demand scenario studies in future

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MUSCAT ELECTRICITY DISTRIBUTION COMPANY S.A.O.C

5. CHALLENGES AND 5.1. New Connection Applications MEDC are responsible for the connection of customers for OPPORTUNITIES WITHIN all levels of demand that our system supplies. We are also THE SYSTEM the initial point of connection request for customers seeking a 33kV or 132kV connection at an OETC grid supply point. In 2017, we have received 13 bulk connection MEDC recognise that the nature of electricity generation requests with a total of 119MW connected demand. 11kV and use is changing. We envisage that recent policy and lower voltages connection applications are identified in initiatives will result in an increase in photovoltaic (PV) Table 13. generation on our distribution system. Unlike other utilities in different regions, Oman has not seen significant Table 13 New 11kV and LV Customer Applications uptake in electric vehicle charging thus, the associated No. of S.No. Category demand characteristics for electric vehicles (EV) are not Applications considered to be a contributing factor to our system 1 Residential 7815 planning in the short to medium planning horizon. 2 Commercial 960 However, this will be closely monitored to check the 3 Industrial 84 penetration rate of EV and PV in general. 4 Government 159 5 Tourism 21 With the introduction of domestic PV generation, we do 6 Agriculture 37 foresee challenges in the way we will plan and operate our Total 9076 system. Whilst PV may have the impact of reducing transmission and distribution congestion, we do envisage that power quality, reverse power flow and operating No. of Connections Applications Received in 2017 within voltage limits may become a challenge if PV uptake is significant. Agriculture Commercial MEDC are responsible for ensuring power quality according Residential to the regulations under which we operate. However, with the addition of intermittent, consumer-owned and non- Government dispatchable PV units, current standard procedures for Industrial guaranteeing power quality might not be as effective as Tourism they are without PV.

Overvoltage is one of the main reasons for limiting the Whilst MEDC has received a considerable number of load capacity (active power) of non-dispatchable PV, that can be related requests, we have received very few requests for connected to a low voltage Distribution System. During distributed generation connections energisation. We high PV generation and low load periods, there is a envisage that as PV uptake increases we will begin to possibility of reverse power flow and consequently voltage receive enquiries in the coming year. rise, in the HV & LV feeder. We envisage that this will be most prominent during the winter period. For this reason, 5.2. System Constraints and Opportunities MEDC believe that if uptake is significant it will impact Load related system constraints fall into one of two investment decision making for reinforcement and asset categories: replacement. Consideration of tap range, optimum • Current constraints that can be considered DSSS dispatch of capacitor banks and conductor sizing may be obligations. necessary should PV penetration become high. • Load related constraints based on current load growth forecasts.

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MUSCAT ELECTRICITY DISTRIBUTION COMPANY S.A.O.C

MEDC will seek to address such constraints as part of its investment plan. Demand Not Secured (DNS) non compliances are identified and documented within Appendix B of this Capability Statement.

Table 14 provides a list of projected capacity constraints at the end of the planning horizon in 2020. If the value is identified as negative, MEDC envisage there will be a deficit in spare capacity at that specific substation, thus it is less advantageous for a customer to consider a new connection in that area. Likewise, if there is spare capacity (positive), then this substation may be considered more advantageous as a point for new customer connection.

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MUSCAT ELECTRICITY DISTRIBUTION COMPANY S.A.O.C

Table 14 2020 Projected Capacity Constraints in MVA

Area Name Forecast Load (MVA) Firm Capacity (MVA) Spare Capacity Available [MVA]

Airport 105.4 120 14.6

Amerat 189.5 252 62.5

Ansab 81.4 80 -1.4

Azaiba 290.2 320 29.8

Bousher 85.1 80 -5.1

Ghubrah South 50.0 80 30.0

Hail 128.6 140 11.4

Khoud 112.1 120 7.9

Khuwair 207.0 240 33.0

Mabelah 312.6 360 47.4

Mawaleh 194.0 190 -4.0

Misfah 39.6 40 0.4

MSQ 62.3 80 17.7

Muscat 35.7 40 4.3

Mutrah 92.8 128 35.2

Quriyat Group 51.0 40 -11.0

Qurum 77.1 112 34.9

Rusail 154.6 176 21.4

Ruwi 106.8 120 13.2

Sarooj 92.2 120 27.8

Seeb 178.0 180 2.0

WadiAdai 71.7 100 28.3

Wadi Kabir 69.4 100 30.6

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MUSCAT ELECTRICITY DISTRIBUTION COMPANY S.A.O.C

6. THE INVESTMENT PLAN

6.1. System Development Projects during the period 2018– 2020 Table 15 provides and overview of the status of primary substation projects by zone in the period 2018 to 2020.

Table 16 summarise the list of sponsored projects that are planned to be connected in the period 2018 to 2020.

Tables 17 to 19 summarise the projects planned for completion in the years 2018, 2019 and 2020 respectively.

A summary description of each of the planned projects is provided by operating zone in Sections 6.2 to 6.4.

Table 15 Status of the Primary Substations at a glance [2018- 2020]

Project Stage Zone1 Zone2 Zone3

Under Construction 2 - 3

Tendering - 2 1

Design 2 5 4

Planning 2 1 5

TOTAL 6 8 13

Table 16 Summary of Sponsored Projects

Zone Project Description Expected Compl.Date Status Details Purpose

1 New Al Saleel ROP[P162] Primary Substation Q2’2018 Under Construction 2 x 6 MVA TX Government

2 New Mall of Oman [P171] Primary Substation Q2’2019 Design Stage 3 x 20 MVA TX Commercial

2 New ROP Hospital [P172] Primary Substation Q2’2019 Design Stage 3 x 20 MVA TX Government

3 New ROP Al Khoud [P161] Primary Substation Q2’2018 Under Construction 2 x 20 MVA TX Government

3 New ROP Dog Kennel [P183] Primary Substation Q2’2018 Under Construction 2 x 6 MVA TX Government

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MUSCAT ELECTRICITY DISTRIBUTION COMPANY S.A.O.C

Table 17 Summary of Planned Projects in MEDC Distribution System to meet Summer 2018 Maximum Demand

Zone Project Description Expected Compl.Date Status Details Purpose

Upgrading Al Hajir (P031) Primary Under To relieve the load of adjacent PSS.& 1 Q1’2018 2 x 20 MVA TX Substation Construction accommodate new loads

New Amerat 3 [P179] Primary Under To relieve the load of adjacent PSS& 2 Q1’2018 3 x 20 MVA TX Substation Construction accommodate new loads

New Rusail08(KOM) [P164] Primary Under To relieve the load of adjacent PSS.& 3 Q2’2018 3 x 20 MVA TX Substation Construction accommodate new loads

New Mawaleh South 05 [P148] Primary Under To relieve the load of adjacent PSS.& 3 Q2’2018 3 x 20 MVA TX Substation Construction accommodate new loads

Upgrading Wadi Al Lawami [P117] Under To relieve the load of adjacent PSS.& 3 Q2’2018 3 x 20 MVA TX Primary Substation Construction accommodate new loads

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Table 18 Summary of Planned Projects in MEDC Distribution System to meet Summer 2019 Maximum Demand

Zone Project Description Expected Compl.Date Status Details Purpose

Upgrading Post Office [P150] Consultancy To relieve the load of adjacent PSS.& 1 Q2’2019 3 x 20 MVA TX Primary Substation Stage accommodate new loads

Upgrading Amerat Heights [P152] Consultancy To relieve the load of adjacent PSS.& 1 Q2’2019 3 x 20 MVA TX Primary Substation Stage accommodate new loads

Upgrading Al Nahdah (P006) Primary To relieve the load of adjacent PSS.& 1 Q2’2019 Planning Stage 3 x 20 MVA TX Substation accommodate new loads

New Amerat 4 [P180] Primary To relieve the load of adjacent PSS.& 1 Q2’2019 Planning Stage 3 x 20 MVA TX Substation accommodate new loads

New Bousher 2 [P163] Primary Tender To relieve the load of adjacent PSS.& 2 Q4’2018 3 x 20 MVA TX Substation Awarded accommodate new loads To relieve the load of adjacent PSS.& Upgrading Al Khuwair North[P054] Tender 2 Q4’2018 3 x 20 MVA TX accommodate new loads & to replace the Primary substation Awarded assets Upgrading Ghala 1[PP015] Primary Consultancy To relieve the load of adjacent PSS.& 2 Q2’2019 3 x 20 MVA TX Substation Stage accommodate new loads Upgrading Azaibah North1 [P011] Consultancy To relieve the load of adjacent PSS.& 2 Q2’2019 3 x 20 MVA TX Primary Substation Stage accommodate new loads Upgrading Al Awabi [P139] Primary Consultancy To relieve the load of adjacent PSS.& 2 Q2’2019 3 x 20 MVA TX Substation Stage accommodate new loads Upgrading Qurum-2(P094) Primary 2 Q2’2019 -- 2 x 20 MVA TX To replace the transformers. Substation PIAD Prepared New Sarooj-4(P181) Primary To relieve the load of adjacent PSS.& 2 Q2’2019 Land 3 x 20 MVA TX Substation accommodate new loads Finalization To relieve the load of adjacent PSS.& Upgrading Mabelah Shabiya [P060] Tender 3 Q2’2019 3 x 20 MVA TX accommodate new loads & to replace the Primary Substation Awarded assets Upgrading Mabelah C [P064] Primary To relieve the load of adjacent PSS.& 3 Q2’2019 Design Stage 3 x 20 MVA TX Substation accommodate new loads Upgrading Mabelah South PH-7 To relieve the load of adjacent PSS.& 3 Q2’2019 Design Stage 3 x 20 MVA TX [P141] Primary Substation accommodate new loads Upgrading Mabelah A Primary [P063] To relieve the load of adjacent PSS.& 3 Q2’2019 Design Stage 3 x 20 MVA TX Substation accommodate new loads New Seeb5 [P186] Primary To relieve the load of adjacent PSS.& 3 Q2’2019 Design Stage 3 x 20 MVA TX Substation accommodate new loads Upgrading Sur Al Hadid [P116] To relieve the load of adjacent PSS.& 3 Q2’2019 Planning Stage 3 x 20 MVA TX Primary Substation accommodate new loads New Al Khoud [P187] Primary To relieve the load of adjacent PSS.& 3 Q2’2019 Planning Stage 3 x 20 MVA TX Substation accommodate new loads

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Table 19 Summary of Planned Projects in MEDC Distribution System to meet Summer 2020 Maximum Demand

Zone Project Description Expected Compl.Date Status Details Purpose

New Azaibah South [P189] Primary Planning To relieve the load of adjacent PSS.& 2 Q2’2020 3 x 20 MVA TX Substation Stage accommodate new loads

Upgrading Mabelah South [P061] Planning To relieve the load of adjacent PSS.& 3 Q2’2020 3 x 20 MVA TX Primary Substation Stage accommodate new loads & to replace the assets

New Mabelah South 9 [P184] Planning To relieve the load of adjacent PSS.& 3 Q2’2020 3 x 20 MVA TX Primary Substation Stage accommodate new loads

New Mabelah South PH 6[P185] Planning To relieve the load of adjacent PSS.& 3 Q2’2020 3 x 20 MVA TX Primary Substation Stage accommodate new loads

Zone 1 – (The Eastern Zone)

The Zone 1 region includes the capital city of Muscat, Project 1: Upgrading Al Hajir (P031) Primary Substation Muttrah and an extensive rural network, which covers the with 2 x 20 MVA Configuration wilayats of Amerat and Quriyat. The number of customers MEDC plan to upgrade Al Hajir primary substation, located served in the Zone 1 region is 115,260 which is in the Hajir Area to accommodate the connection of new approximately 33 % of the total customer population. loads in that area. Currently, this area is supplied via small The following primary projects are projected in the period outdoor primary substations which are loaded above or 2018 to 2020. near to their firm capacity. The expected completion date of the project is Q1’2018 and the 33kV connection point is from Jahloot GSS.

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Project 2: New Amerat-3 (P179) Primary Substation with security of supply is maintained. The expected completion 3 x 20 MVA Configuration date of the project is Q2’2019 and the 33kV connection point is from Amerat Grid. Amerat 3 primary substation is proposed in the Amerat Area to provide additional capacity to accommodate the Project 5: New Amerat-4 (P180) Primary Substation with new load in that area and to ensure security of supply in the 3 x 20 MVA Configuration Amerat area is maintained. The expected completion date Amerat-4 primary substation is proposed in the Amerat of the project is Q1’2018 and the 33kV connection point is Area to facilitate 11kV transfers from heavily loaded from Amerat Grid. primary substations as well as providing additional capacity Project 3: Upgrading Post Office (P150) Primary for new loads whilst ensuring security of supply is Substation with 3 x 20 MVA Configuration maintained. The expected completion date of the project is Q2’2019 and the 33kV connection point is from Amerat B Upgrading Post Office primary substation in the Amerat Grid. Area to provide additional capacity to ensure security of supply is maintained. The expected completion date of the Project 6: Upgrading Al Nahdah (P006) Primary Substation project is Q2’2019 and the 33kV connection point is from with 2 x 20 MVA Configuration Amerat Grid. Upgrading of Al Nahdah primary substation in the Amerat Project 4: Upgrading Amerat Heights (P152) Primary Area is required to accommodate the high load growth in Substation with 3 x 20 MVA Configuration that area and to ensure security of supply is maintained. The expected completion date of the project is Q2’2019 Upgrading of Amerat Heights primary substation in the and the 33kV connection point is from Amerat Grid. Amerat Area to provide additional capacity to ensure

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Zone 2 - (The Central Zone)

The Zone 2 region covers the commercial and residential Project 2: Upgrading Al Khuwair North (P054) Primary areas of Bousher, Al Khuwair, Al Ansab, Azaibah and Substation with 3 x 20 MVA Configuration Qurum. This is largely an established area, which has seen MEDC plan to upgrade Al Khuwair North primary substation high load growth in previous years. The Mall of Oman and in the Al Khuwair Area to provide additional capacity in the Seeb Exhibition were the largest commercial projects in area ensuring security of supply is maintained. The Zone 2 region. expected completion date of the project is Q4’2018 and the The number of customers served in the Zone 2 region is 33kV connection point is from MSQ A GSS. 102,219 which is approximately 29 % of the total customer Project 3: Upgrading Azaibah North-1 (P011) Primary population Substation with 3 x 20 MVA Configuration The following primary projects are projected in the period Upgrading Azaibah North-1 primary substation; located in 2018 to 2020. the Azaiba Area will facilitate the connection of new loads Project 1: New Bousher 2 (P163) Primary Substation with whilst ensuring security of supply is maintained. The 3 x 20 MVA Configuration expected completion date of the project is Q2’2019 and the 33kV connection point is from Ghubrah GSS. Bousher-2 primary substation is proposed in the Bousher Area to facilitate 11kV transfers from heavily loaded Project 4: Upgrading Al Awabi (P139) Primary Substation primary substations as well as providing additional capacity with 3 x 20 MVA Configuration for new loads whilst ensuring security of supply is Upgrading of Al Awabi primary substation is proposed in maintained. The expected completion date of the project is Awabi Area to facilitate the transfer of 11kV loads from Q4’2018 and the 33kV connection point is from Bousher A nearby heavily loaded primary substations to ensure GSS. security of supply is maintained whilst also addressing the voltage regulation issues in the area. The expected

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completion date of the project is Q2’2019 and the 33kV maintained. The expected completion date of the project is connection point is from Misfah GSS. Q2’2019 and the 33kV connection point is from MSQ A GSS.

Project 5: Qurum-2 (P094) Primary Substation – Upgrading Project 7: Upgrading Ghala 1 (P015) Primary Substation of 2x16 MVA with 2 x 20 MVA Configuration with 3 x 20 MVA Configuration

Upgrading of Qurum-2 primary substation is proposed in Upgrading of Ghala 1 primary substation in the Ghala area the Qurum area to replace the existing 16 MVA is based on a bulk load customer request. The expected transformers with 20 MVA transformers to ensure security completion date of the project is Q2’2019 and the 33kV of supply is maintained. The expected completion date of connection point is from Ghala GSS. the project is Q2’2019. Project 8: New Azaibah South (P189) Primary Substation Project 6: New Sarooj-4 (P181) Primary Substation with with 3 x 20 MVA Configuration

3 x 20 MVA Configuration The new Azaibah South primary substation is proposed in The new Sarooj-4 primary substation is proposed in the the Azaibah area to provide spare capacity in that area Sarooj Area to facilitate the connection of new loads and ensuring security of supply is maintained. The expected the transfer of 11kV loads from nearby heavily loaded completion date of the project is Q2’2020 and the 33kV primary substations to ensure security of supply is connection point is from the new Bousher GSS.

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Zone 3 - (The Western Zone)

The Zone 3 Region includes the Muscat International expected completion date of the project is Q2’2018 and the Airport, Rusail Industrial Area, Seeb, Mawalleh, Al Khoud 33kV connection point is from Mawaleh South GSS. and Mabelah areas. The number of customers served in Project 3: Upgrading Wadi Al Lawami (P117) Primary the Zone 3 region is 134,204 which is approximately 38 % Substation with 3 x 20 MVA Configuration of the total customer population. Upgrading of Wadi Al Lawami primary substation in the The following primary projects are projected in the period Seeb Area to facilitate the connection of new loads and the 2018 to 2020. transfer of 11kV loads from nearby heavily loaded primary Project 1: New Rusail-8 (KOM) (P182) Primary Substation substations to ensure security of supply is maintained. The with 3 x 20 MVA Configuration expected completion date of the project is Q2’2018 and the 33kV connection point is from Seeb Main GSS. Rusail-8 primary substation is proposed in the Rusail Area to address the bulk load request of KOM. The new primary Project 4: Upgrading Mabelah Shabiya (P060) Primary substation will also provide additional capacity fo11kV Substation with 3 x 20 MVA Configuration transfer capacity to enable load to be transferred from MEDC propose to Upgrade Mabelah Shabiya primary nearby primary substations ensuring security of supply is substation in the Mabelah area by replacing the existing maintained. The expected completion date of the project is assets, ensuring security of supply is maintained by Q2’2018 and the 33kV connection point is from Rusail GSS. providing additional capacity to facilitate 11kV load Project 2: New Mawaleh South-5 (P148) Primary transfers from other nearby primary substations. The Substation with 3 x 20 MVA Configuration expected completion date of the project is Q2’2019 and the

Mawaleh South-5 primary substation is proposed in 33kV connection point is from Mabelah-2(A’Salam) GSS. Mawalleh Area to facilitate the connection of new loads and the transfer of 11kV loads from nearby primary substations to ensure security of supply is maintained. The

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Project 5: Upgrading Mabelah C (P064) Primary Substation Upgrading of Sur Al Hadid primary substation in the Seeb with 3 x 20 MVA Configuration area is proposed to accommodate new loads and facilitate 11kV load transfers in that area whilst ensuring security of Upgrading of Mabelah-C primary substation in the Mabelah supply is maintained. The expected completion date of the area is proposed to accommodate new loads and facilitate project is Q2’2019 and the 33kV connection point is from 11kV load transfers in that area whilst ensuring security of Mabelah GSS. supply is maintained. The expected completion date of the project is Q2’2019 and the 33kV connection point is from Project 10: New Al Khoud (P187) Primary Substation with Mabelah-2 (A’Salam) GSS. 3 x 20 MVA Configuration

Project 6: Upgrading Mabelah South PH-7 (P141) Primary The new Al Khoud primary substation in the Al Khoud area Substation with 3 x 20 MVA Configuration is proposed to accommodate new loads and facilitate 11kV load transfers in that area whilst ensuring security of supply Upgrading of Mabelah South PH-7 primary substation in is maintained. The expected completion date of the project the Mabelah area is proposed to accommodate new loads is Q2’2019 and the 33kV connection point is from Seeb GSS. and facilitate 11kV load transfers in that area whilst ensuring security of supply is maintained. The expected Project 11: New Mabelah South-9 (P184) Primary completion date of the project is Q2’2019 and the 33kV Substation with 3 x 20 MVA Configuration connection point is from Mabelah GSS. The new Mabelah South-9 primary substation in the Halban

Project 7: Upgrading Mabelah A (P063) Primary area is proposed to accommodate new loads and facilitate 11kV load transfers in that area whilst ensuring security of Substation with 3 x 20 MVA Configuration supply is maintained. The expected completion date of the Upgrading of Mabelah-A primary substation in the Mabelah project is Q2’2020 and the 33kV connection point is from area is proposed to accommodate new loads and facilitate Mabelah 2(A’Salam) GSS. 11kV load transfers in that area whilst ensuring security of Project 12: New Mabelah South PH 6 (P185) Primary supply is maintained. The expected completion date of the Substation with 3 x 20 MVA Configuration project is Q2’2019 and the 33kV connection point is from Mabelah GSS. The new Mabelah South PH 6 primary substation in the Mabelah area is proposed to accommodate new loads and Project 8: New Seeb5 (P186) Primary Substation with facilitate 11kV load transfers in that area whilst ensuring 3 x 20 MVA Configuration security of supply is maintained. The expected completion The New Seeb primary substation in the Seeb area is date of the project is Q2’2020 and the 33kV connection proposed to accommodate new loads and facilitate 11kV point is from Halban GSS. load transfers in that area whilst ensuring security of supply Project 13: Upgrading Mabelah South (P061) Primary is maintained. The expected completion date of the project Substation with 3 x 20 MVA Configuration is Q2’2019 and the 33kV connection point is from Seeb Main GSS. Upgrading of Mabelah South primary substation in the

Project 9: Upgrading Sur Al Hadid (P116) Primary Mabelah area to upgrade the existing assets and improve the security of supply in the area. The expected completion Substation with 3 x 20 MVA Configuration date of the project is Q2’2020 and the 33kV connection point is from Mabelah(A’Salam) GSS.

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APPENDIX A: DISTRIBU TION SYSTEM CAPABILI TY STATEMENT

Distribution Licence Condition 32: Distribution System Capability Statement

1. The Licensee shall, within 12 months of the grant of this Licence, and thereafter, on an annual basis, prepare a statement, in a form approved by the Authority, showing, in respect of each of the three succeeding financial years, circuit capacity, forecast power flows and loading on each part of its Distribution System and fault levels for each transmission node, together with: a. Information on the status of distribution circuit capacity and the anticipated future requirements of such capacity, including (i) applications for new connections and (ii) applications to Connect Generation capacity to its Systems; b. A commentary prepared by the Licensee indicating the Licensee's views as to those parts of its Distribution System most suited to new Connections and Distribution of further quantities of electricity, including the prospective for Connection of Systems operated by the Rural Areas Electricity Company SAOC; c. Information on what constraints are foreseen on the Licensee's Distribution System and where; d. Information relating to progress of ongoing investment in its Distribution System; e. Such further information as shall be reasonably necessary to enable any Person seeking to Connect to or use the Licensee's Distribution System to identify and evaluate the opportunities for so doing; f. An assessment of technical losses from the Licensee's Distribution System; and g. Such other matters as shall be specified in directions issued by the Authority from time to time for the purposes of this Condition, provided that the Authority may, upon application of the Licensee, relieve the Licensee from the obligation to prepare any such statement in respect of any period and any part or parts of its Distribution System specified in directions issued to the Licensee by the Authority from time to time for the purposes of this Condition. 2. The Licensee shall include in every statement prepared in accordance with paragraph 1 above the information required by that paragraph except that the Licensee may with the prior consent of the Authority omit from any such statement any details as to the capacity, flows, loading or other information, disclosure of which would, in the view of the Authority, seriously and prejudicially affect the commercial interests of the Licensee or any third party. 3. The Licensee may periodically revise the information set out in and, with the approval of the Authority, alter the form of the statement prepared in accordance with paragraph 1 and shall, at least once in every year this Licence is in force, revise such statement in order that the information set out in the statement shall continue to be accurate in all material respects. 4. The Licensee shall, when preparing the statement referred to in paragraph 1 of this Condition, ensure that the statement takes due account of information required to be provided to it by Persons bound by the Distribution Code. 5. The Licensee shall send a copy of the statement prepared in accordance with paragraph 1 and of each revision of such statement in accordance with paragraph 3 to the Authority. Each such revision shall require to be approved by the Authority and shall not become effective until approved by the Authority. 6. The Licensee shall, subject to paragraph 6, give or send a copy of the statement prepared in accordance with paragraph 1 or (as the case may be) of the latest revision of such statement in accordance with paragraph 3 approved by the Authority pursuant to such paragraph to any Person who requests a copy of such statement. 7. The Licensee may make a charge for any statement given or sent pursuant to paragraph 4 of an amount reflecting the Licensee's reasonable costs of providing such a statement, which shall not exceed the maximum amount specified in directions issued by the Authority from time to time for the purposes of this Condition

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APPENDIX B : D SSS NON COMPLIANCES

Zone Primary Substation P-No. TX Config Firm(MVA)8 MW MVAr MVA DNS(MVA)

1 Amerat 1 P005 2 x 16 16 22.9 7.6 24.1 8.1

1 Amerat Heights P152 2 x 20 22 21.9 5.6 22.6 0.6

1 Al Nahdah P006 2 x 20 22 27.2 11.7 29.6 7.6

1 Al Mahaj P136 2 x 6 6 8.0 3.4 8.7 2.7

2 Al Ansab 1 P007 2 x 20 22 23.9 7.0 24.9 2.9

2 Al Khuwair 25 P053 2 x 20 22 21.1 7.4 22.4 0.4

2 Qurum 2 P094 2 x 16 16 16.2 5.0 17.0 1.0

2 Airport Height 1 P001 2 x 20 22 23.7 12.7 26.9 4.9

2 Ghala 1 P015 2 x 20 22 22.1 3.6 22.4 0.4

2 Bousher Grid GP02 2 x 20 22 22.1 9.8 24.2 2.2

2 Al Muna P084 2 x 20 22 31.4 13.5 34.2 12.2

2 MSQ Grid GP06 2 x 20 22 27.1 11.6 29.5 7.5

3 Sultan School P029 2 x 20 22 23.4 10.1 25.5 3.5

3 Al Khoud PH-6 P049 2 x 20 22 26.6 8.8 28.0 6.0

3 Mabelah South PH-4 P062 3 x 20 44 45.8 17.1 48.9 4.9

3 New Al Khoud P047 2 x 20 22 20.6 9.1 22.5 0.5

3 Wadi Al Lawami P117 2 x 20 22 25.0 13.8 28.6 6.6

3 Mabelah A P063 2 x 20 22 25.1 6.6 26.0 4.0

3 Al Hail North 2 P028 2 x 20 22 21.5 8.9 23.3 1.3

3 Al Hail South 1 P030 2 x 20 22 24.1 9.7 26.0 4.0

3 Rusail Private Factory P106 2 x 20 22 22.2 9.8 24.3 2.3

3 Old Mabelah P059 2 x 20 22 21.3 8.8 23.0 1.0

3 Mabelah South PH-7 P141 2 x 20 22 24.7 3.8 25.0 3.0

3 Mabelah Grid GP04 2 x 20 22 23.9 8.9 25.5 3.5

3 Mawaleh A P070 3 x 20 44 43.2 16.2 46.1 2.1

3 Al HailNorth 1 P027 2 x 20 22 21.5 9.2 23.4 1.4

3 Mawaleh C P072 2 x 20 22 20.4 9.1 22.3 0.3

3 Mabelah C P064 2 x 20 22 30.0 12.0 32.3 10.3

3 Rusail Industrial 2 P104 2 x 20 22 23.9 10.2 26.0 4.0

3 Rusail Industrial 1 P103 2 x 16 16 21.7 9.3 23.7 7.7 3 Sur Al Hadid P116 2 x 20 22 24.5 7.6 25.7 3.7 3 Wadi Al Aresh P115 2 x 20 22 30.8 13.2 33.5 11.5 3 Mabelah South P061 2 x 20 22 27.8 11.9 30.2 8.2

8 For all 20 MVA primary stations, AER has allowed an additional 10% to the Firm Capacity [i.e.: For 2x20 MVA TX -22MVA Firm and for 3x20 MVA TX -44MVA Firm] for the DNS calculation purposes only and not system planning or development.

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Zone Primary Substation P-No. TX Config Firm(MVA)8 MW MVAr MVA DNS(MVA)

3 Mawaleh South Grid GP05 2 x 20 22 23.7 10.2 25.8 3.8

3 Rusail B P101 2 x 10 10 14.8 6.4 16.1 6.1

3 Mabelah Shabiya P060 2 x 20 22 28.3 12.1 30.8 8.8

3 Al Jifnain P042 1 x 6 - 3.1 1.3 3.3 1.7

Total 160.7

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APPENDIX C : SYSTEM STUDIES RESULTS

MEDC Distribution Capability Statement (2018-2020) – V2.2 35 Muscat Electricity Distribution Company S.A.O.C

Al Falaj Grid Network Results Primary Substations Peak Demand 2017 2018 2019 2020 Primary Substation P.No. MW MVAr MW MVAr MW MVAr MW MVAr Falaj P178 11.9 5.1 11.9 5.1 11.9 5.1 11.9 5.1 Darsait P018 19.5 5.3 19.5 5.3 19.5 5.3 19.5 5.3 Mutrah Store P085 14.2 7.2 14.2 7.2 14.2 7.2 14.2 7.2 Jibrooh P041 27.7 6.7 28.2 6.8 28.8 7.0 29.3 7.1 Seaport P086 3.1 1.3 3.1 1.3 3.1 1.3 3.1 1.3 P.D.O P144 26.1 11.2 26.1 11.2 26.1 11.2 26.1 11.2 Percentage Loading of Primary Substations Firm Capacity(MVA) Load'2017 Load'2018 Load'2019 Load'2020 Primary P.No. N-1 N-1 N-1 N-1 2017 2018 2019 2020 MVA % MVA % MVA % MVA % Spare Spare Spare Spare Falaj P178 16.0 16.0 16.0 16.0 12.9 80.8 3.1 12.9 80.8 3.1 12.9 80.8 3.1 12.9 80.8 3.1 Darsait P018 20.0 20.0 20.0 20.0 20.2 101.0 -0.2 20.2 101.0 -0.2 20.2 101.0 -0.2 20.2 101.0 -0.2 Mutrah Store P085 20.0 20.0 20.0 20.0 15.9 79.5 4.1 15.9 79.5 4.1 15.9 79.5 4.1 15.9 79.5 4.1 Jibrooh P041 40.0 40.0 40.0 40.0 28.5 71.3 11.5 29.0 72.6 11.0 29.6 74.0 10.4 30.2 75.4 9.8 Seaport P086 6.0 6.0 6.0 6.0 3.4 57.0 2.6 3.4 57.0 2.6 3.4 57.0 2.6 3.4 57.0 2.6 P.D.O P144 60.0 60.0 60.0 60.0 28.4 47.3 31.6 28.4 47.3 31.6 28.4 47.3 31.6 28.4 47.3 31.6 Primary Substations Bus Voltages 2017 2018 2019 2020 Primary P.No. 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) Darsait-A P018 99.4 101.6 99.4 101.6 99.3 101.5 99.3 101.5 Darsait-B P018 99.4 101.7 99.4 101.7 99.3 101.6 99.3 101.6 Falaj-A P178 99.4 101.9 99.4 101.9 99.3 101.8 99.3 101.7 Falaj-B P178 99.4 101.9 99.4 101.9 99.3 101.8 99.3 101.7 Jibrooh-A P041 99.1 101.6 99.1 101.5 99.0 100.6 99.0 100.5 Jibrooh-B P041 98.9 101.6 98.8 101.5 98.7 100.6 98.7 100.5 Jibrooh-C P041 98.9 101.3 98.8 101.3 98.7 100.3 98.7 100.2 Mutrah Store-A P085 99.3 101.1 99.2 101.0 99.2 101.0 99.1 100.9 Mutrah Store-B P085 99.3 101.1 99.2 101.0 99.2 101.0 99.1 100.9 PDO-33 P144 99.3 101.6 99.3 101.6 99.2 101.5 99.2 101.5 Primary Substation 3-Phase Fault Current Levels 33kV -Rated SC Capacity(kA) 11kV -Rated SC Capacity(kA) 2017 2018 2019 2020 Primary P.No. 2017 2018 2019 2020 2017 2018 2019 2020 33kV 11kV 33kV 11kV 33kV 11kV 33kV 11kV Falaj-A P178 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 20.4 13.5 20.5 13.6 22.0 13.8 22.1 13.8 Falaj-B P178 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 20.4 13.5 20.5 13.6 22.0 13.8 22.1 13.8 Darsait-A P018 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 19.8 8.2 19.9 8.2 21.3 8.3 21.3 8.3 Darsait-B P018 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 19.8 8.3 19.8 8.3 21.3 8.3 21.3 8.3 Jibrooh-A P041 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 15.2 14.1 15.3 14.2 16.1 11.9 16.1 12.0 Jibrooh-B P041 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 15.3 14.1 15.4 14.2 16.2 11.9 16.2 12.0 Jibrooh-C P041 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 15.3 8.0 15.4 8.0 16.2 6.5 16.2 6.6 Mutrah Store-A P085 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 17.3 14.0 17.3 14.1 18.4 14.3 18.4 14.3 Mutrah Store-B P085 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 17.3 14.0 17.3 14.1 18.4 14.3 18.4 14.3 PDO-A P144 25.0 25.0 25.0 25.0 - - - - 18.4 - 18.4 - 19.6 - 19.7 - PDO-B P144 25.0 25.0 25.0 25.0 - - - - 18.3 - 18.4 - 19.6 - 19.7 - PDO-C P144 25.0 25.0 25.0 25.0 - - - - 18.3 - 18.4 - 19.6 - 19.6 - PDO-D P144 25.0 25.0 25.0 25.0 - - - - 18.3 - 18.4 - 19.6 - 19.6 - Seaport-A P086 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 8.0 4.2 8.1 4.2 8.3 4.2 8.3 4.2 Seaport-B P086 - - - - 18.4 18.4 18.4 18.4 - 4.2 - 4.2 - 4.2 - 4.2

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

33kV Feeder Loads Circuit Rating(MVA) 2017 2018 2019 2020 Primary 2017 2018 2019 2020 MVA %Loading MVA %Loading MVA %Loading MVA %Loading Darsait-A-P018 22.0 22.0 22.0 22.0 10.4 47.2% 10.4 47.2% 10.4 47.2% 10.4 47.2% Darsait-B-P018 22.0 22.0 22.0 22.0 10.3 46.7% 10.3 46.7% 10.3 46.7% 10.3 46.7% Falaj-A-P178 22.0 22.0 22.0 22.0 6.6 30.2% 6.6 30.2% 6.6 30.2% 6.6 30.2% Falaj-B-P178 22.0 22.0 22.0 22.0 6.6 29.9% 6.6 29.9% 6.6 29.9% 6.6 29.9% Jibrooh-A-P041 22.0 22.0 22.0 22.0 9.7 44.3% 9.9 45.1% 10.1 46.1% 10.3 47.0% Jibrooh-B-P041 22.0 22.0 22.0 22.0 19.4 88.0% 19.7 89.7% 20.3 92.4% 20.7 94.3% Mutrah Store-A-P085 22.0 22.0 22.0 22.0 8.2 37.1% 8.2 37.1% 8.2 37.1% 8.2 37.1% Mutrah Store-B-P085 22.0 22.0 22.0 22.0 8.1 36.8% 8.1 36.8% 8.1 36.8% 8.1 36.8% PDO-A-P144 22.0 22.0 22.0 22.0 7.1 32.1% 7.1 32.1% 7.1 32.1% 7.1 32.1% PDO-B-P144 22.0 22.0 22.0 22.0 7.1 32.1% 7.1 32.1% 7.1 32.1% 7.1 32.1% PDO-C-P144 22.0 22.0 22.0 22.0 7.1 32.1% 7.1 32.1% 7.1 32.1% 7.1 32.1% PDO-D-P144 22.0 22.0 22.0 22.0 7.1 32.1% 7.1 32.1% 7.1 32.1% 7.1 32.1% Seaport-A-P086 22.0 22.0 22.0 22.0 3.4 15.4% 3.4 15.4% 3.4 15.4% 3.4 15.4%

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

Muttrah Grid Network Results Primary Substations Peak Demand 2017 2018 2019 2020 Primary Substation P.No. MW MVAr MW MVAr MW MVAr MW MVAr C.B.D P173 20.8 14.0 20.8 14.0 20.8 14.0 20.8 14.0 Ruwi Office P108 15.4 8.9 15.7 5.2 16.0 5.3 16.3 5.4 M.O.D P143 4.7 2.0 4.7 2.0 4.7 2.0 4.7 2.0 Bait Al Falaj P142 17.7 9.3 17.7 5.8 17.7 5.8 17.7 5.8 Riyam P099 16.4 5.8 16.4 5.4 16.4 5.4 16.4 5.4 Percentage Loading of Primary Substations Firm Capacity(MVA) Load'2017 Load'2018 Load'2019 Load'2020 Primary P.No. N-1 N-1 N-1 N-1 2017 2018 2019 2020 MVA % MVA % MVA % MVA % Spare Spare Spare Spare C.B.D P173 32.0 32.0 32.0 32.0 25.1 78.4 6.9 25.1 78.4 6.9 25.1 78.4 6.9 25.1 78.4 6.9 Ruwi Office P108 20.0 20.0 20.0 20.0 17.8 89.0 2.2 16.5 82.6 3.5 16.8 84.2 3.2 17.2 85.8 2.8 M.O.D P143 1TX 1TX 1TX 1TX 5.1 - - 5.1 - - 5.1 - - 5.1 - - Bait Al Falaj P142 40.0 40.0 40.0 40.0 20.0 50.0 20.0 18.6 46.6 21.4 18.6 46.6 21.4 18.6 46.6 21.4 Riyam P099 20.0 20.0 20.0 20.0 17.4 87.0 2.6 17.3 86.4 2.7 17.3 86.4 2.7 17.3 86.4 2.7 Primary Substations Bus Voltages 2017 2018 2019 2020 Primary P.No. 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) Bait Al Falaj-A P142 99.9 102.3 100.5 103.7 100.5 103.7 100.5 103.7 Bait Al Falaj-B P142 100.0 102.3 100.6 103.7 100.6 103.7 100.6 103.7 Bait Al Falaj-C P142 100.0 102.1 100.6 103.6 100.6 103.6 100.6 103.5 C.B.D-A P173 100.1 100.9 100.7 101.5 100.7 101.5 100.7 101.5 C.B.D-B P173 100.1 100.9 100.7 101.5 100.7 101.5 100.7 101.5 C.B.D-C P173 100.1 101.7 100.7 102.3 100.7 102.3 100.7 102.3 M.O.D-A P143 100.1 101.9 100.6 102.5 100.6 102.5 100.6 102.5 Riyam-A P099 98.9 101.1 99.5 101.9 99.5 101.9 99.5 101.9 Riyam-B P099 98.9 101.1 99.5 101.9 99.5 101.9 99.5 101.9 Ruwi Office-A P108 100.0 101.2 100.6 103.1 100.6 103.0 100.6 103.0 Ruwi Office-B P108 100.0 101.2 100.6 103.1 100.6 103.0 100.6 103.0 Primary Substation 3-Phase Fault Current Levels 33kV -Rated SC Capacity(kA) 11kV -Rated SC Capacity(kA) 2017 2018 2019 2020 Primary P.No. 2017 2018 2019 2020 2017 2018 2019 2020 33kV 11kV 33kV 11kV 33kV 11kV 33kV 11kV Bait Al Falaj-A P142 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 16.4 14.0 16.4 13.9 17.4 14.1 17.4 14.1 Bait Al Falaj-B P142 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 17.9 14.0 17.9 13.9 19.1 14.1 19.1 14.1 Bait Al Falaj-C P142 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 17.9 8.0 17.9 7.9 19.1 8.0 19.1 8.0 C.B.D-A P173 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 21.7 14.5 21.7 14.5 23.4 14.8 23.4 14.8 C.B.D-B P173 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 21.7 14.5 21.7 14.5 23.5 14.8 23.5 14.8 C.B.D-C P173 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 21.7 7.9 21.7 7.9 23.4 8.0 23.4 8.0 M.O.D -A P143 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 19.5 5.0 19.5 5.0 20.9 5.0 20.9 5.0 Riyam-A P099 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 7.8 12.3 7.8 12.2 8.0 12.4 8.0 12.4 Riyam-B P099 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 7.8 12.3 7.8 12.2 8.0 12.4 8.0 12.4 Ruwi Office-A P108 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 18.7 14.4 18.7 14.3 19.9 14.5 19.9 14.6 Ruwi Office-B P108 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 18.7 14.4 18.7 14.3 19.9 14.5 19.9 14.6

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

33kV Feeder Loads Circuit Rating(MVA) 2017 2018 2019 2020 Primary 2017 2018 2019 2020 MVA %Loading MVA %Loading MVA %Loading MVA %Loading Bait Al Falaj-A-P142 22.0 22.0 22.0 22.0 6.5 29.7% 6.0 27.5% 6.0 27.5% 6.0 27.5% Bait Al Falaj-B-P142 22.0 22.0 22.0 22.0 6.7 30.3% 6.2 28.0% 6.2 28.0% 6.2 28.0% Bait Al Falaj-C-P142 22.0 22.0 22.0 22.0 7.3 33.4% 6.8 30.8% 6.8 30.8% 6.8 30.8% C.B.D-A-P173 22.0 22.0 22.0 22.0 9.3 42.2% 9.3 42.2% 9.3 42.2% 9.3 42.2% C.B.D-B-P173 22.0 22.0 22.0 22.0 9.3 42.2% 9.3 42.2% 9.3 42.2% 9.3 42.2% C.B.D-C-P173 22.0 22.0 22.0 22.0 7.4 33.6% 7.4 33.6% 7.4 33.6% 7.4 33.6% Riyam-A-P099 15.4 15.4 15.4 15.4 8.9 57.8% 8.8 57.3% 8.8 57.3% 8.8 57.3% Riyam-B-P099 15.4 15.4 15.4 15.4 9.0 58.2% 8.9 57.7% 8.9 57.7% 8.9 57.7% Ruwi Office-A-P108 22.0 22.0 22.0 22.0 9.2 41.9% 8.5 38.4% 8.6 39.2% 8.8 39.9% Ruwi Office-B-P108 22.0 22.0 22.0 22.0 9.2 41.8% 8.4 38.3% 8.6 39.0% 8.8 39.8% M.O.D-A-P143 22.0 22.0 22.0 22.0 5.2 23.7% 5.2 23.6% 5.2 23.6% 5.2 23.6%

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

WadiKabir-A Grid Network Results Primary Substations Peak Demand 2017 2018 2019 2020 Primary Substation P.No. MW MVAr MW MVAr MW MVAr MW MVAr M.B.D. South P075 16.9 4.1 17.0 4.2 17.2 4.2 17.3 4.2 Qasr Al Alam P090 17.6 5.4 17.6 5.4 17.6 5.4 17.6 5.4 Waljah P130 18.9 0.0 19.3 0.0 19.6 0.0 20.0 0.0 Sidab P119 3.2 1.4 3.2 1.4 3.2 1.4 3.2 1.4

Wadi Al Kabir Workshop P126 3.4 1.4 3.4 1.4 3.4 1.4 3.4 1.4

Wadi Al Kabir Housing P127 2.3 1.0 2.3 1.0 2.3 1.0 2.3 1.0 Ali Shihani P125 11.6 6.1 11.7 3.8 11.8 3.9 11.9 3.9 Majlis Oman P066 4.2 0.9 4.2 0.9 4.3 0.9 4.3 0.9 Percentage Loading of Primary Substations Firm Capacity(MVA) Load'2017 Load'2018 Load'2019 Load'2020 Primary P.No. N-1 N-1 N-1 N-1 2017 2018 2019 2020 MVA % MVA % MVA % MVA % Spare Spare Spare Spare M.B.D. South P075 20.0 20.0 20.0 20.0 17.4 87.0 2.6 17.5 87.7 2.5 17.7 88.4 2.3 17.8 89.1 2.2 Qasr Al Alam P090 20.0 20.0 20.0 20.0 18.4 92.0 1.6 18.4 92.0 1.6 18.4 92.1 1.6 18.4 92.1 1.6 Waljah P130 20.0 20.0 20.0 20.0 18.9 94.5 1.1 19.3 96.3 0.7 19.6 98.1 0.4 20.0 100.0 0.0 Sidab P119 6.0 6.0 6.0 6.0 3.4 57.5 2.6 3.4 57.5 2.6 3.4 57.5 2.6 3.4 57.5 2.6 Wadi Al Kabir P126 6.0 6.0 6.0 6.0 3.7 61.0 2.3 3.7 61.0 2.3 3.7 61.0 2.3 3.7 61.0 2.3 Workshop Wadi Al Kabir P127 1TX 1TX 1TX 1TX 2.5 - - 2.5 - - 2.5 - - 2.5 - - Housing Ali Shihani P125 20.0 20.0 20.0 20.0 13.1 65.5 6.9 12.3 61.5 7.7 12.4 62.0 7.6 12.5 62.5 7.5 Majlis Oman P066 20.0 20.0 20.0 20.0 4.3 21.5 15.7 4.3 21.7 15.7 4.4 21.8 15.6 4.4 22.0 15.6 Primary Substations Bus Voltages 2017 2018 2019 2020 Primary P.No. 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) Ali Shihani-A P125 101.9 104.3 102.1 105.2 102.1 105.2 102.0 105.2 Ali Shihani-B P125 101.9 104.3 102.1 105.2 102.1 105.2 102.0 105.2 M.B.D. South-A P075 101.8 104.8 102.0 104.9 102.0 104.9 101.9 104.9 M.B.D. South-B P075 101.8 104.8 102.0 104.9 102.0 104.9 101.9 104.9 Majlis Oman-A P066 101.7 103.0 101.9 103.0 101.9 103.0 101.9 103.0 Majlis Oman-B P066 101.7 103.0 101.9 103.0 101.9 103.0 101.9 103.0 Qasr al Alam-A P090 101.1 103.5 101.2 103.7 101.2 103.7 101.2 103.7 Qasr al Alam-B P090 101.1 103.5 101.2 103.7 101.2 103.7 101.2 103.7 Sidab-A P119 101.5 105.4 101.7 105.5 101.7 105.5 101.7 105.5 Sidab-B P119 101.5 105.4 101.7 105.5 101.7 105.5 101.7 105.5 Wadi Al Kabir P127 101.8 105.1 101.9 105.3 101.9 105.3 101.9 105.2 Housing-A Wadi Al Kabir P126 101.7 105.4 101.9 105.6 101.9 105.6 101.9 105.6 Workshop-A Wadi Al Kabir P126 - 105.4 - 105.6 - 105.5 - 105.5 Workshop-B Walja-A P130 101.8 103.0 101.9 103.0 101.9 103.0 101.9 103.0 Walja-B P130 101.8 103.0 101.9 103.0 101.9 103.0 101.9 103.0

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

Primary Substation 3-Phase Fault Current Levels 33kV -Rated SC Capacity(kA) 11kV -Rated SC Capacity(kA) 2017 2018 2019 2020 Primary P.No. 2017 2018 2019 2020 2017 2018 2019 2020 33kV 11kV 33kV 11kV 33kV 11kV 33kV 11kV Ali Shihani-A P125 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 19.9 14.1 20.0 14.0 21.3 14.2 21.3 14.2 Ali Shihani-B P125 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 19.9 14.1 20.0 14.0 21.3 14.2 21.4 14.2 M.B.D. South-A P075 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 18.1 14.7 18.1 14.7 19.2 14.9 19.2 14.9 M.B.D. South-B P075 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 18.0 14.7 18.1 14.7 19.2 14.9 19.2 14.9 Majlis Oman-A P066 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 7.5 10.9 7.5 10.9 7.7 11.1 7.7 11.1 Majlis Oman-B P066 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 7.5 10.9 7.5 10.9 7.7 11.1 7.7 11.1 Qasr al Alam-A P090 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 9.2 12.9 9.2 12.9 9.5 13.1 9.5 13.1 Qasr al Alam-B P090 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 9.2 12.9 9.2 12.9 9.5 13.1 9.5 13.1 Sidab-A P119 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 9.8 8.0 9.8 8.0 10.1 8.0 10.1 8.0 Sidab-B P119 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 9.8 8.0 9.8 8.0 10.1 8.0 10.1 8.0 Wadi Al Kabir P127 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 15.4 4.6 15.4 4.6 16.2 4.6 16.2 4.6 Housing Wadi Al Kabir P126 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 15.6 4.6 15.6 4.6 16.4 4.6 16.4 4.6 Workshop-A Wadi Al Kabir P126 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 16.5 4.4 15.1 4.4 15.8 4.4 15.8 4.4 Workshop-B Walja-A P130 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 16.5 14.2 15.1 14.3 15.8 14.6 15.8 14.6 Walja-B P130 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 15.9 14.2 15.5 14.3 16.3 14.6 16.3 14.6 33kV Feeder Loads Circuit Rating(MVA) 2017 2018 2019 2020 Primary 2017 2018 2019 2020 MVA %Loading MVA %Loading MVA %Loading MVA %Loading Ali Shihani-F1-P125 22.0 22.0 22.0 22.0 6.6 30.2% 6.2 28.2% 6.2 28.4% 6.3 28.6% Ali Shihani-F2-P125 22.0 22.0 22.0 22.0 6.7 30.4% 6.2 28.3% 6.3 28.6% 6.3 28.8% M.B.D. South-F1-P075 22.0 22.0 22.0 22.0 8.8 40.1% 8.9 40.4% 9.0 40.7% 9.0 41.1% M.B.D. South-F2-P075 22.0 22.0 22.0 22.0 8.9 40.3% 8.9 40.6% 9.0 40.9% 9.1 41.2% Majlis Oman-F1-P066 22.0 22.0 22.0 22.0 2.1 9.7% 2.2 9.8% 2.2 9.9% 2.2 10.0% Majlis Oman-F2-P066 22.0 22.0 22.0 22.0 2.2 9.8% 2.2 9.9% 2.2 10.0% 2.2 10.1% Muscat 01 Fdr-WorkshopP126, 44.2% 44.2% 44.2% 44.2% SidabP119 & WK Housing 22.0 22.0 22.0 22.0 9.7 9.7 9.7 9.7 Qasr al Alam-F1OHL-P090 15.4 15.4 15.4 15.4 11.0 71.2% 11.2 72.6% 11.4 74.1% 11.6 75.6% Qasr al Alam-F2OHL-P090 15.4 15.4 15.4 15.4 10.0 65.1% 10.2 66.4% 10.4 67.7% 10.6 69.1% Walja-F1-P130 22.0 22.0 22.0 22.0 9.4 42.8% 9.4 42.8% 9.4 42.8% 9.4 42.9% Walja-F2-P130 22.0 22.0 22.0 22.0 9.4 42.9% 9.4 42.9% 9.4 42.9% 9.4 42.9%

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

WadiKabir-B Grid Network Results Primary Substations Peak Demand 2017 2018 2019 2020 Primary Substation P.No. MW MVAr MW MVAr MW MVAr MW MVAr Ruwi Valley P174 18.2 7.8 18.3 7.9 18.5 7.9 18.6 8.0 Ruwi Market P076 15.4 7.0 15.7 7.1 16.0 7.2 16.3 7.4 Old Airport P107 17.5 10.5 17.8 10.7 18.2 10.9 18.5 11.1 Wadi Al Kabir Height P128 13.5 4.1 13.6 4.1 13.7 4.1 13.8 4.2 Percentage Loading of Primary Substations Firm Capacity(MVA) Load'2017 Load'2018 Load'2019 Load'2020 Primary P.No. N-1 N-1 N-1 N-1 2017 2018 2019 2020 MVA % MVA % MVA % MVA % Spare Spare Spare Spare Ruwi Valley P174 20.0 20.0 20.0 20.0 19.8 98.9 0.2 19.9 99.6 0.1 20.1 100.4 -0.1 20.2 101.2 -0.2 Ruwi Market P076 20.0 20.0 20.0 20.0 16.9 84.5 3.1 17.2 86.1 2.8 17.6 87.8 2.4 17.9 89.4 2.1 Old Airport P107 20.0 20.0 20.0 20.0 20.4 102.0 -0.4 20.8 103.9 -0.8 21.2 105.9 -1.2 21.6 108.0 -1.6

Wadi Al Kabir Height P128 20.0 20.0 20.0 20.0 14.1 70.5 5.9 14.2 71.1 5.8 14.3 71.6 5.7 14.4 72.2 5.6 Primary Substations Bus Voltages 2017 2018 2019 2020 Primary P.No. 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) Old Airport-A P107 101.1 101.8 101.1 101.6 101.0 101.5 101.0 101.3 Old Airport-B P107 101.2 102.2 101.1 102.1 101.1 102.0 101.0 101.8 Ruwi Market-A P076 101.3 103.3 101.2 103.2 101.2 103.1 101.1 103.0 Ruwi Market-B P076 101.3 103.3 101.2 103.2 101.2 103.1 101.1 103.0 Ruwi Valley-A P174 101.4 103.0 101.4 102.9 101.3 103.5 101.3 103.4 Ruwi Valley-B P174 101.4 103.0 101.4 102.9 101.3 102.2 101.3 102.2 Wadi Al Kabir Height- P128 101.2 104.2 101.1 104.1 101.1 104.0 101.0 103.9 A Wadi Al Kabir Height- P128 101.2 104.2 101.1 104.1 101.1 104.0 101.0 103.9 B Primary Substation 3-Phase Fault Current Levels 33kV -Rated SC Capacity(kA) 11kV -Rated SC Capacity(kA) 2017 2018 2019 2020 Primary P.No. 2017 2018 2019 2020 2017 2018 2019 2020 33kV 11kV 33kV 11kV 33kV 11kV 33kV 11kV Old Airport-A P107 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 16.6 8.2 16.7 8.3 17.6 8.4 17.7 8.4 Old Airport-B P107 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 16.6 8.3 16.7 8.3 17.6 8.4 17.6 8.4 Ruwi Market-A P076 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 17.9 14.5 18.0 14.5 19.1 14.8 19.2 14.8 Ruwi Market-B P076 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 17.9 14.5 18.0 14.5 19.1 14.8 19.1 14.8 Ruwi Valley-A P174 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 20.7 14.7 20.8 14.7 22.3 8.1 22.4 8.1 Ruwi Valley-B P174 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 20.7 14.7 20.8 14.7 22.3 8.5 22.3 8.5 Wadi Al Kabir Height - P128 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 14.3 13.6 14.4 13.6 15.1 13.8 15.1 13.8 A Wadi Al Kabir Height - P128 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 14.3 13.6 14.4 13.6 15.1 13.8 15.1 13.8 B 33kV Feeder Loads Circuit Rating(MVA) 2017 2018 2019 2020 Primary 2017 2018 2019 2020 MVA %Loading MVA %Loading MVA %Loading MVA %Loading Old Airport-F1-P107 22.0 22.0 22.0 22.0 11.0 49.8% 11.2 50.8% 11.4 51.9% 11.6 52.9% Old Airport-F2-P107 22.0 22.0 22.0 22.0 10.0 45.6% 10.2 46.5% 10.4 47.4% 10.6 48.4% Ruwi Market-F1-P076 22.0 22.0 22.0 22.0 8.6 39.2% 8.8 40.0% 9.0 40.8% 9.2 41.6% Ruwi Market-F2-P076 22.0 22.0 22.0 22.0 8.7 39.5% 8.9 40.2% 9.0 41.0% 9.2 41.8% Ruwi Valley-F1-P174 22.0 22.0 22.0 22.0 10.2 46.3% 10.3 46.7% 8.4 38.3% 8.5 38.6% Ruwi Valley-F2-P174 22.0 22.0 22.0 22.0 10.2 46.3% 10.3 46.7% 12.3 56.0% 12.4 56.4% Wadi Al Kabir Height 1-F1- 22.0 22.0 22.0 22.0 7.1 32.0% 7.1 32.3% 7.2 32.6% 7.2 32.8% P128 Wadi Al Kabir Height 1-F2- 22.0 22.0 22.0 22.0 7.1 32.5% 7.2 32.8% 7.3 33.0% 7.3 33.3% P128

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

Wadi Adai Grid Network Results Primary Substations Peak Demand 2017 2018 2019 2020 Primary Substation P.No. MW MVAr MW MVAr MW MVAr MW MVAr Amerat 1 P005 22.9 7.5 18.7 6.1 11.8 3.9 13.0 4.3 Qantab P089 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Al Bustan Palace P017 4.0 1.7 4.0 1.7 4.0 1.7 4.0 1.7 Al Hamryah P035 12.7 6.4 12.7 6.4 12.7 6.4 12.7 6.4 Wadi Adai P175 18.4 7.9 18.4 7.9 18.4 7.9 18.4 7.9 Wattaya P131 14.5 9.3 14.5 9.3 14.5 9.3 14.5 9.3 Khoula Hospital P132 19.2 9.9 19.2 6.3 19.2 6.3 19.2 6.3 Al Mahaj P136 8.0 3.4 3.9 1.7 3.9 1.7 3.9 1.7 Percentage Loading of Primary Substations Firm Capacity(MVA) Load'2017 Load'2018 Load'2019 Load'2020 Primary P.No. N-1 N-1 N-1 N-1 2017 2018 2019 2020 MVA % MVA % MVA % MVA % Spare Spare Spare Spare Amerat 1 P005 16.0 16.0 16.0 16.0 24.1 150.6 -8.1 19.7 122.9 -3.7 12.4 77.7 3.6 13.7 85.8 2.3 Qantab P089 1TX 1TX 1TX 1TX 0.0 - - 0.0 - - 0.0 - - 0.0 - - Al Bustan Palace P017 16.0 16.0 16.0 16.0 4.4 27.4 11.6 4.4 27.4 11.6 4.4 27.4 11.6 4.4 27.4 11.6 Al Hamryah P035 20.0 20.0 20.0 20.0 14.2 71.0 5.8 14.2 71.0 5.8 14.2 71.0 5.8 14.2 71.0 5.8 Wadi Adai P175 20.0 20.0 20.0 20.0 20.1 100.3 -0.1 20.1 100.3 -0.1 20.1 100.3 -0.1 20.1 100.3 -0.1 Wattaya P131 20.0 20.0 20.0 20.0 17.2 86.0 2.8 17.2 86.0 2.8 17.2 86.0 2.8 17.2 86.0 2.8 Khoula Hospital P132 40.0 40.0 40.0 40.0 21.6 54.0 18.4 20.2 50.5 19.8 20.2 50.5 19.8 20.2 50.5 19.8 Al Mahaj P136 6.0 6.0 6.0 6.0 8.7 144.5 -2.7 4.3 71.1 1.7 4.3 71.1 1.7 4.3 71.1 1.7 Primary Substations Bus Voltages 2017 2018 2019 2020 Primary P.No. 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) Al Bustan Palace-A P017 98.2 102.1 99.0 102.9 99.3 103.3 99.2 103.2 Al Bustan Palace-B P017 98.4 102.1 99.2 102.9 99.5 103.3 99.4 103.2 Al Hamryah-A P035 98.3 100.3 99.0 101.1 99.3 101.5 99.3 101.4 Al Hamryah-B P035 98.3 100.3 99.0 101.1 99.4 101.5 99.3 101.4 Al Mahaj-A P136 95.6 97.5 98.1 101.4 98.4 101.8 98.4 101.7 Al Mahaj-B P136 - 97.5 - 101.4 - 101.8 - 101.7 Amerat 1-A P005 97.3 99.4 97.9 99.6 98.8 101.7 98.7 101.3 Amerat 1-B P005 95.9 95.4 97.9 99.6 98.8 101.7 98.7 101.3 Khoula Hospital-A P132 98.4 100.3 99.2 102.0 99.5 102.4 99.5 102.3 Khoula Hospital-B P132 98.4 100.3 99.2 102.0 99.5 102.4 99.5 102.3 Khoula Hospital-C P132 98.4 100.4 99.2 102.1 99.5 102.4 99.5 102.3 Qantab P089 98.3 102.7 99.0 103.5 99.3 103.9 99.3 103.8 Wadi Adai-A P175 98.6 100.0 99.4 100.8 99.7 101.2 99.7 101.1 Wadi Adai-B P175 98.7 100.0 99.4 100.8 99.7 101.2 99.7 101.1 Wattaya-A P131 98.5 99.4 99.2 100.3 99.6 100.6 99.5 100.5 Wattaya-B P131 98.5 99.4 99.2 100.3 99.6 100.6 99.5 100.5

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

Primary Substation 3-Phase Fault Current Levels 33kV -Rated SC Capacity(kA) 11kV -Rated SC Capacity(kA) 2017 2018 2019 2020 Primary P.No. 2017 2018 2019 2020 2017 2018 2019 2020 33kV 11kV 33kV 11kV 33kV 11kV 33kV 11kV Al Bustan Palace-A P017 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 4.9 9.1 4.9 9.1 5.0 9.1 5.0 9.2 Al Bustan Palace-B P017 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 4.9 9.1 4.9 9.1 5.0 9.1 5.0 9.2 Al Hamryah-A P035 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 13.0 13.5 12.9 13.4 13.4 13.6 13.4 13.6 Al Hamryah-B P035 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 13.0 13.5 13.0 13.4 13.5 13.6 13.5 13.6 Al Mahaj-A P136 25.0 25.0 25.0 25.0 16.0 16.0 16.0 16.0 3.8 3.7 3.7 3.4 3.7 3.4 3.7 3.4 Al Mahaj-B P136 - - - - 16.0 16.0 16.0 16.0 - 3.7 - 3.5 - 3.5 - 3.5 Amerat 1-A P005 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 6.6 6.3 7.2 11.9 7.2 11.3 7.3 11.4 Amerat 1-B P005 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 6.8 7.0 7.2 11.9 7.3 11.3 7.3 11.4 Khoula Hospital-A P132 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 15.8 13.8 15.7 13.7 16.4 13.9 16.4 13.9 Khoula Hospital-B P132 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 15.8 13.8 15.7 13.7 16.4 13.9 16.4 13.9 Khoula Hospital-C P132 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 16.4 7.7 16.3 7.7 17.1 7.7 17.1 7.7 Qantab P089 25.0 25.0 25.0 25.0 16.0 16.0 16.0 16.0 4.2 3.4 4.2 3.4 4.2 3.4 4.2 3.4 Wadi Adai-A P175 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 22.2 15.0 22.0 15.0 23.5 15.2 23.6 15.2 Wadi Adai-B P175 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 22.2 15.0 22.0 15.0 23.6 15.2 23.6 15.2 Wattaya-A P131 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 18.3 14.3 18.2 14.3 19.2 14.5 19.2 14.5 Wattaya-B P131 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 18.2 14.3 18.1 14.3 19.1 14.5 19.2 14.5 33kV Feeder Loads Circuit Rating(MVA) 2017 2018 2019 2020 Primary 2017 2018 2019 2020 MVA %Loading MVA %Loading MVA %Loading MVA %Loading Al Bustan Palace-F1-P017 22.0 22.0 22.0 22.0 1.8 8.3% 1.8 8.3% 1.8 8.3% 1.8 8.3% Al Bustan Palace-F2-P017 22.0 22.0 22.0 22.0 2.4 11.1% 2.4 11.1% 2.4 11.1% 2.4 11.1% Al Hamryah-F1-P035 15.4 15.4 15.4 15.4 7.3 47.2% 7.3 47.2% 7.3 47.2% 7.3 47.2% Al Hamryah-F2-P035 15.4 15.4 15.4 15.4 7.3 47.2% 7.3 47.1% 7.3 47.1% 7.3 47.1% Amerat 1-F1-P005 15.4 15.4 15.4 15.4 8.7 56.3% 10.2 66.3% 6.3 41.0% 7.0 45.5% Amerat 1-F2-P005 15.4 15.4 15.4 15.4 16.5 107.3% 10.1 65.3% 6.3 40.6% 6.9 45.0% Interlink Fdr Al Mahaj-F1-P136-OD 22.0 22.0 22.0 22.0 9.0 41.0% 4.2 19.3% 4.2 19.3% 4.2 19.3% Khoula Hospital-F1-P132 22.0 22.0 22.0 22.0 7.4 33.7% 6.9 31.3% 6.9 31.3% 6.9 31.3% Khoula Hospital-F2-P132 22.0 22.0 22.0 22.0 7.4 33.5% 6.8 31.1% 6.8 31.1% 6.8 31.1% Khoula Hospital-F3-P132 22.0 22.0 22.0 22.0 7.3 33.4% 6.8 31.0% 6.8 31.0% 6.8 31.0% Wadi Adai-F1-P175 22.0 22.0 22.0 22.0 10.4 47.1% 10.3 47.0% 10.3 47.0% 10.3 47.0% Wadi Adai-F2-P175 22.0 22.0 22.0 22.0 10.4 47.1% 10.4 47.1% 10.4 47.1% 10.4 47.1% Wattaya-F1-P131 22.0 22.0 22.0 22.0 8.9 40.3% 8.9 40.3% 8.9 40.3% 8.9 40.3% Wattaya-F2-P131 22.0 22.0 22.0 22.0 8.9 40.4% 8.9 40.3% 8.9 40.3% 8.9 40.3%

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

Jahloot Grid Network Results Primary Substations Peak Demand 2017 2018 2019 2020 Primary Substation P.No. MW MVAr MW MVAr MW MVAr MW MVAr Sawaqim 1 P112 4.9 2.1 4.9 2.1 4.9 2.1 4.9 2.1 Sawaqim 2 P113 0.6 0.3 0.6 0.3 0.6 0.3 0.6 0.3 Tunis Heium P137 4.4 1.9 4.4 1.9 4.4 1.9 4.4 1.9 Jahloot P040 3.3 1.4 3.3 1.4 3.3 1.4 3.3 1.4 Siya P120 2.3 1.0 2.3 1.0 2.3 1.0 2.3 1.0 Barr Al Jissah P044 6.8 2.4 6.8 2.2 6.8 2.2 6.8 2.2 Al Masarat P068 3.9 1.7 3.9 1.3 3.9 1.3 3.9 1.3 Al Hajir P031 5.6 2.4 ------Al Hajir (Upgrade) P031 - - 5.6 1.8 5.6 1.8 5.6 1.8 Wadi Al Mayh P129 1.8 0.8 1.8 0.8 1.8 0.8 1.8 0.8 Hussan Yiti P169 0.8 0.3 0.8 0.3 0.8 0.3 0.8 0.3 Debah P114 0.1 0.0 0.1 0.0 0.1 0.0 0.1 0.0 ROP Al Saleel P162 - - 4.3 1.4 4.3 1.4 4.3 1.4 Al Atkiya P182 4.1 1.8 4.1 1.8 4.1 1.8 4.1 1.8 Arqi P121 0.9 0.4 0.9 0.4 0.9 0.4 0.9 0.4 Percentage Loading of Primary Substations Firm Capacity(MVA) Load'2017 Load'2018 Load'2019 Load'2020 Primary P.No. N-1 N-1 N-1 N-1 2017 2018 2019 2020 MVA % MVA % MVA % MVA % Spare Spare Spare Spare Sawaqim 1 P112 6.0 6.0 6.0 6.0 5.4 89.5 0.6 5.4 89.5 0.6 5.4 89.5 0.6 5.4 89.5 0.6 Sawaqim 2 P113 1TX 1TX 1TX 1TX 0.6 - - 0.6 - - 0.6 - - 0.6 - - Tunis Heium P137 1TX 1TX 1TX 1TX 4.8 - - 4.8 - - 4.8 - - 4.8 - - Jahloot P040 6.0 6.0 6.0 6.0 3.5 59.1 2.5 3.5 59.1 2.5 3.5 59.1 2.5 3.5 59.1 2.5 Siya P120 6.0 6.0 6.0 6.0 2.5 41.0 3.5 2.5 41.0 3.5 2.5 41.0 3.5 2.5 41.0 3.5 Barr Al Jissah P044 20.0 20.0 20.0 20.0 7.2 36.0 12.8 7.2 35.8 12.8 7.2 35.8 12.8 7.2 35.8 12.8 Al Masarat P068 10.0 10.0 10.0 10.0 4.3 42.6 5.7 4.1 41.2 5.9 4.1 41.2 5.9 4.1 41.2 5.9 Al Hajir P031 6.0 - - - 6.1 101.3 -0.1 ------Al Hajir (Upgrade) P031 - 20.0 20.0 20.0 - - - 5.9 29.4 14.1 5.9 29.4 14.1 5.9 29.4 14.1 Wadi Al Mayh P129 1TX 1TX 1TX 1TX 2.0 - - 2.0 - - 2.0 - - 2.0 - - Hussan Yiti P169 6.0 6.0 6.0 6.0 0.9 14.6 5.1 0.9 14.6 5.1 0.9 14.6 5.1 0.9 14.6 5.1 Debah P114 1TX 1TX 1TX 1TX 0.1 - - 0.1 - - 0.1 - - 0.1 - - ROP Al Saleel P162 - 6.0 6.0 6.0 - - - 4.5 74.6 1.5 4.5 74.6 1.5 4.5 74.6 1.5 Al Atkiya P182 1TX 1TX 1TX 1TX 4.5 - - 4.5 - - 4.5 - - 4.5 - - Arqi P121 1TX 1TX 1TX 1TX 1.0 - - 1.0 - - 1.0 - - 1.0 - -

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

Primary Substations Bus Voltages 2017 2018 2019 2020 Primary P.No. 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) Al Atkiya-A P182 98.1 100.1 98.6 100.6 98.6 100.6 98.6 100.6 Al Masarat-A P068 100.2 104.0 100.7 104.6 100.7 104.6 100.7 104.6 Al Masarat-B P068 100.2 104.0 100.7 104.6 100.7 104.6 100.7 104.6 Arqi-A P121 98.2 101.8 98.7 102.3 98.7 102.3 98.7 102.3 Bar Al Jissah 1-A P044 97.3 100.8 97.9 101.4 97.9 101.4 97.9 101.4 Bar Al Jissah 1-B P044 97.3 100.8 97.8 101.4 97.8 101.4 97.8 101.4 Debha-A P114 100.2 104.8 100.7 105.3 100.7 105.3 100.7 105.3 Hajir 1-A P031 96.7 99.5 100.7 105.9 99.9 105.9 100.7 105.9 Hajir 1-B P031 96.7 99.5 100.7 105.9 99.9 105.9 100.7 105.9 Hussan Yitti-A P169 97.5 101.7 98.0 102.2 98.0 102.2 98.0 102.2 Hussan Yitti-B P169 97.5 101.7 98.0 102.2 98.0 102.2 98.0 102.2 Jahloot 1-A- P040 99.4 103.0 99.8 103.5 99.8 103.5 99.8 103.5 Jahloot 1-B P040 100.2 103.0 100.7 103.4 100.7 103.4 100.7 103.4 ROP Al Saleel-A P162 100.2 105.1 100.7 101.6 100.7 101.6 100.7 101.6 ROP Al Saleel-B P162 100.5 105.1 98.1 101.6 98.1 101.6 98.1 101.6 Sawaqim 1-A P112 100.5 95.3 98.1 95.7 98.1 95.7 98.1 95.7 Sawaqim 1-B P112 96.7 95.3 97.2 95.7 97.2 95.7 97.2 95.7 Sawaqim 2-A P113 96.7 104.7 97.2 102.3 97.2 102.3 97.2 102.3 Siya 1-A P120 100.5 102.2 98.1 102.7 98.1 102.7 98.1 102.7 Siya 1-B P120 98.4 102.2 98.8 102.7 98.8 102.7 98.8 102.7 Tunis-A P137 99.7 101.6 100.2 102.1 100.2 102.1 100.2 102.1 Wadi Meih 1-A P129 96.3 98.7 99.5 102.1 99.5 102.1 99.5 102.1 Primary Substation 3-Phase Fault Current Levels 33kV -Rated SC Capacity(kA) 11kV -Rated SC Capacity(kA) 2017 2018 2019 2020 Primary P.No. 2017 2018 2019 2020 2017 2018 2019 2020 33kV 11kV 33kV 11kV 33kV 11kV 33kV 11kV Al Atkiya-A P182 21.9 21.9 21.9 21.9 16.0 16.0 16.0 16.0 2.8 3.3 2.8 3.3 2.8 3.3 2.8 3.3 Al Masarat-A P068 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 17.2 10.8 17.3 10.8 17.7 10.9 17.7 10.9 Al Masarat-B P068 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 17.2 10.8 17.4 10.8 17.8 10.9 17.8 10.9 Arqi-A P121 25.0 25.0 25.0 25.0 16.0 16.0 16.0 16.0 2.2 2.0 2.2 2.0 2.2 2.0 2.2 2.0 Bar Al Jissah 1-A P044 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 2.9 6.1 2.9 6.1 2.9 6.1 2.9 6.1 Bar Al Jissah 1-B P044 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 2.8 6.1 2.8 6.1 2.9 6.1 2.9 6.1 Debha-A P114 25.0 25.0 25.0 25.0 16.0 16.0 16.0 16.0 1.4 2.3 1.4 2.3 1.4 2.3 1.4 2.3 Hajir 1-A P031 16.0 25.0 25.0 25.0 16.0 25.0 25.0 25.0 3.2 3.4 12.4 11.6 12.5 11.7 12.5 11.7 Hajir 1-B P031 16.0 25.0 25.0 25.0 16.0 25.0 25.0 25.0 3.2 3.4 12.4 11.6 12.5 11.7 12.5 11.7 Hussan Yitti-A P169 25.0 25.0 25.0 25.0 16.0 16.0 16.0 16.0 3.1 3.1 3.1 3.1 3.1 3.1 3.1 3.1 Hussan Yitti-B P169 25.0 25.0 25.0 25.0 16.0 16.0 16.0 16.0 3.1 3.1 3.1 3.1 3.1 3.1 3.1 3.1 Jahloot 1-A P040 16.0 16.0 16.0 16.0 16.0 16.0 16.0 16.0 7.3 4.2 7.3 4.2 7.4 4.2 7.4 4.2 Jahloot 1-B P040 16.0 16.0 16.0 16.0 16.0 16.0 16.0 16.0 7.3 4.1 7.3 4.1 7.4 4.1 7.4 4.1 ROP Al Saleel-A P162 - 25.0 25.0 25.0 - 25.0 25.0 25.0 1.9 3.4 2.0 3.8 2.1 3.8 2.1 3.8 ROP Al Saleel-B P162 - 25.0 25.0 25.0 - 25.0 25.0 25.0 1.9 3.4 2.0 3.8 2.1 3.8 2.1 3.8 Sawaqim 1-A P112 25.0 25.0 25.0 25.0 16.0 16.0 16.0 16.0 2.2 4.2 2.2 4.3 2.2 4.3 2.2 4.3 Sawaqim 1-B P112 25.0 25.0 25.0 25.0 16.0 16.0 16.0 16.0 2.2 4.2 2.2 4.3 2.2 4.3 2.2 4.3 Sawaqim 2-A P113 25.0 25.0 25.0 25.0 16.0 16.0 16.0 16.0 1.9 2.6 2.0 2.7 2.0 2.7 2.0 2.7 Siya 1-A P120 25.0 25.0 25.0 25.0 16.0 16.0 16.0 16.0 2.9 4.5 2.9 4.5 2.9 4.5 2.9 4.5 Siya 1-B P120 - - - - 16.0 16.0 16.0 16.0 - 4.5 - 4.5 - 4.5 - 4.5 Tunis-A P137 25.0 25.0 25.0 25.0 16.0 16.0 16.0 16.0 8.7 4.5 8.7 4.5 8.8 4.5 8.8 4.5 Wadi Meih 1-A P129 25.0 25.0 25.0 25.0 16.0 16.0 16.0 16.0 2.2 2.1 2.1 2.0 2.1 2.0 2.1 2.0

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

33kV Feeder Loads Circuit Rating(MVA) 2017 2018 2019 2020 Primary 2017 2018 2019 2020 MVA %Loading MVA %Loading MVA %Loading MVA %Loading Al Atkiya-A-P182 22.0 22.0 22.0 22.0 4.6 20.9% 4.6 20.9% 4.6 20.9% 4.6 20.9% Al Masarat-A-P068 22.0 22.0 22.0 22.0 2.2 9.9% 2.1 9.6% 2.1 9.6% 2.1 9.6% Al Masarat-B-P068 22.0 22.0 22.0 22.0 2.1 9.6% 2.0 9.3% 2.0 9.3% 2.0 9.3% Bar Al Jissah 1-A-P044 22.0 22.0 22.0 22.0 4.1 18.8% 4.1 18.7% 4.1 18.7% 4.1 18.7% Bar Al Jissah 1-A-P044 22.0 22.0 22.0 22.0 3.7 16.7% 3.6 16.6% 3.6 16.6% 3.6 16.6% Bar Al Jissah 1-B-P044 22.0 22.0 22.0 22.0 4.0 18.2% 4.0 18.1% 4.0 18.1% 4.0 18.1% Debha-A-P114 22.0 22.0 22.0 22.0 0.1 0.5% 0.1 0.5% 0.1 0.5% 0.1 0.5% Hajir 1-A-P031 15.4 15.4 15.4 15.4 8.5 55.1% 2.0 13.1% 2.0 13.1% 2.0 13.1% Hajir 1-A-P031 - 22.0 22.0 22.0 - - 3.5 16.1% 3.5 16.1% 3.5 16.1% Hajir 1-B-P031 - 22.0 22.0 22.0 - - 3.5 16.1% 3.5 16.1% 3.5 16.1% Mazra Fdr - Jahloot1+Siya+Al 22.0 22.0 22.0 22.0 7.0 31.8% 7.0 31.8% 7.0 31.8% 7.0 31.8% Arqi Sawaqim 1-A-P112 22.0 22.0 22.0 22.0 5.6 25.6% 5.6 25.5% 5.6 25.5% 5.6 25.5% Sawaqim 2--P113 22.0 22.0 22.0 22.0 0.8 3.9% 5.1 23.1% 5.1 23.1% 5.1 23.1% Tunis-A-P137 22.0 22.0 22.0 22.0 4.6 20.8% 4.6 20.7% 4.6 20.7% 4.6 20.7%

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

Yitty Grid Network Results Primary Substations Peak Demand 2017 2018 2019 2020 Primary Substation P.No. MW MVAr MW MVAr MW MVAr MW MVAr Al Khairan P045 1.7 0.7 1.7 0.7 1.7 0.7 1.7 0.7 Yenket P133 0.6 0.3 0.6 0.3 0.6 0.3 0.6 0.3 Saraya Bander P145 8.5 1.9 8.5 1.9 8.5 1.9 8.5 1.9 Jabal Al Sifah P159 3.1 1.1 3.1 1.0 3.1 1.0 3.1 1.0 Yiti P134 2.6 1.1 2.6 1.1 2.6 1.1 2.6 1.1 Al Salam Yiti P135 0.4 0.2 0.4 0.2 0.4 0.2 0.4 0.2 Percentage Loading of Primary Substations Firm Capacity(MVA) Load'2017 Load'2018 Load'2019 Load'2020 Primary P.No. N-1 N-1 N-1 N-1 2017 2018 2019 2020 MVA % MVA % MVA % MVA % Spare Spare Spare Spare Al Khairan P045 3.0 3.0 3.0 3.0 1.8 60.3 1.2 1.8 60.3 1.2 1.8 60.3 1.2 1.8 60.3 1.2 Yenket P133 1.0 1.0 1.0 1.0 0.7 70.5 0.3 0.7 70.5 0.3 0.7 70.5 0.3 0.7 70.5 0.3 Saraya Bander P145 40.0 40.0 40.0 40.0 8.7 21.8 31.3 8.7 21.8 31.3 8.7 21.8 31.3 8.7 21.8 31.3 Jabal Al Sifah P159 40.0 40.0 40.0 40.0 3.3 8.3 36.7 3.3 8.2 36.7 3.3 8.2 36.7 3.3 8.2 36.7 Yiti P134 3.0 3.0 3.0 3.0 2.8 94.0 0.2 2.8 94.0 0.2 2.8 94.0 0.2 2.8 94.0 0.2 Al Salam Yiti P135 1TX 1TX 1TX 1TX 0.5 - - 0.5 - - 0.5 - - 0.5 - - Primary Substations Bus Voltages 2017 2018 2019 2020 Primary P.No. 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) Al Khairan-A P045 99.2 103.1 99.2 103.1 99.2 103.1 99.2 103.1 Al Khairan-B P045 99.2 103.1 99.2 103.1 99.2 103.1 99.2 103.1 Al Salam Yiti-A P135 99.5 103.7 99.5 103.8 99.5 103.8 99.5 103.8 Jabal Al Sifah-A P159 99.2 103.3 99.2 103.5 99.2 103.5 99.2 103.5 Jabal Al Sifah-B P159 99.2 103.3 99.2 103.5 99.2 103.5 99.2 103.5 Jabal Al Sifah-C P159 99.2 103.6 99.2 103.5 99.2 103.5 99.2 103.5 Saraya Bander-A P145 99.4 103.7 99.0 103.0 99.0 103.0 99.0 103.0 Saraya Bander-B P145 99.4 103.7 99.0 103.0 99.0 103.0 99.0 103.0 Saraya Bander-C P145 98.2 101.6 99.0 103.0 99.0 103.0 99.0 103.0 Yanket-A P133 99.4 103.0 99.4 103.1 99.4 103.1 99.4 103.1 Yanket-B P133 - 103.5 - 103.6 - 103.6 - 103.6 Yiti-A P134 99.5 102.5 99.5 102.6 99.5 102.6 99.5 102.6 Yiti-B P134 - 102.5 - 102.6 - 102.6 - 102.6 Primary Substation 3-Phase Fault Current Levels 33kV -Rated SC Capacity(kA) 11kV -Rated SC Capacity(kA) 2017 2018 2019 2020 Primary P.No. 2017 2018 2019 2020 2017 2018 2019 2020 33kV 11kV 33kV 11kV 33kV 11kV 33kV 11kV Al Khairan-A P045 25.0 25.0 25.0 25.0 12.5 12.5 12.5 12.5 5.4 5.1 5.4 5.1 5.4 5.1 5.4 5.1 Al Khairan-B P045 25.0 25.0 25.0 25.0 12.5 12.5 12.5 12.5 5.3 5.1 5.4 5.1 5.4 5.1 5.4 5.1 Al Salam Yiti-A P135 25.0 25.0 25.0 25.0 12.5 12.5 12.5 12.5 6.7 4.0 6.7 4.0 6.8 4.0 6.8 4.0 Jabal Al Sifah-A P159 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 5.5 8.3 5.5 8.2 5.5 8.2 5.5 8.2 Jabal Al Sifah-B P159 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 5.5 8.3 5.5 8.2 5.5 8.2 5.5 8.2 Jabal Al Sifah-C P159 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 5.5 5.6 5.5 5.7 5.5 5.7 5.5 5.7 Saraya Bander-A P145 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 4.8 8.7 4.8 9.0 4.9 9.0 4.9 9.0 Saraya Bander-B P145 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 4.8 8.7 4.8 9.0 4.9 9.0 4.9 9.0 Saraya Bander-C P145 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 4.8 5.3 4.8 5.0 4.9 5.0 4.9 5.0 Yanket-A P133 25.0 25.0 25.0 25.0 12.5 12.5 12.5 12.5 7.5 1.1 7.5 1.1 7.6 1.1 7.6 1.1 Yanket-B P133 - - - - 12.5 12.5 12.5 12.5 - 2.4 - 2.4 - 2.4 - 2.4 Yiti-A P134 25.0 25.0 25.0 25.0 12.5 12.5 12.5 12.5 11.3 2.4 11.3 2.4 11.5 2.4 11.5 2.4 Yiti-B P134 - - - - 12.5 12.5 12.5 12.5 - 2.4 - 2.4 - 2.4 - 2.4

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

33kV Feeder Loads Circuit Rating(MVA) 2017 2018 2019 2020 Primary 2017 2018 2019 2020 MVA %Loading MVA %Loading MVA %Loading MVA %Loading Jabal Al Sifah-A-P159 22.0 22.0 22.0 22.0 1.1 4.9% 1.1 4.9% 1.1 4.9% 1.1 4.9% Jabal Al Sifah-B-P159 22.0 22.0 22.0 22.0 1.1 5.0% 1.1 4.9% 1.1 4.9% 1.1 4.9% Jabal Al Sifah-C-P159 22.0 22.0 22.0 22.0 1.1 5.0% 1.1 4.9% 1.1 4.9% 1.1 4.9% Saraya Bander-A-P145 22.0 22.0 22.0 22.0 1.3 5.9% 2.9 13.2% 2.9 13.2% 2.9 13.2% Saraya Bander-B-P145 22.0 22.0 22.0 22.0 1.3 5.9% 2.9 13.2% 2.9 13.2% 2.9 13.2% Saraya Bander-C-P145 22.0 22.0 22.0 22.0 6.2 28.3% 2.9 13.2% 2.9 13.2% 2.9 13.2% Yenkit--P1-OD 22.0 22.0 22.0 22.0 2.5 11.5% 2.5 11.5% 2.5 11.5% 2.5 11.5% Yiti-A-P134-OD 22.0 22.0 22.0 22.0 3.3 15.0% 3.3 15.0% 3.3 15.0% 3.3 15.0%

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

Quriyat Grid Network Results Primary Substations Peak Demand 2017 2018 2019 2020 Primary Substation P.No. MW MVAr MW MVAr MW MVAr MW MVAr Quriyat P091 19.7 6.7 21.6 7.3 23.6 8.0 25.9 8.8 Al Shahbari P092 17.9 2.7 19.6 2.9 21.5 3.2 23.5 3.5 Dhagmar 1 P021 8.3 3.6 8.3 3.6 8.3 3.6 8.3 3.6 Dhabab P019 3.8 1.6 3.8 1.6 3.8 1.6 3.8 1.6 Hail Al Ghaf P036 4.4 1.9 4.4 1.9 4.4 1.9 4.4 1.9 Al Mazara P074 2.9 1.2 2.9 1.2 2.9 1.2 2.9 1.2 Wadi Al Arbyeen P124 1.2 0.5 1.2 0.5 1.2 0.5 1.2 0.5 Street Light P020 0.6 0.3 0.6 0.3 0.6 0.3 0.6 0.3 RoyalCamp P170 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Percentage Loading of Primary Substations Firm Capacity(MVA) Load'2017 Load'2018 Load'2019 Load'2020 Primary P.No. N-1 N-1 N-1 N-1 2017 2018 2019 2020 MVA % MVA % MVA % MVA % Spare Spare Spare Spare Quriyat P091 20.0 20.0 20.0 20.0 20.8 104.0 -0.8 22.8 113.9 -2.8 24.9 124.7 -4.9 27.3 136.5 -7.3 Al Shahbari P092 20.0 20.0 20.0 20.0 18.1 90.5 1.9 19.8 99.1 0.2 21.7 108.5 -1.7 23.8 118.8 -3.8 Dhagmar 1 P021 12.0 12.0 12.0 12.0 9.0 75.1 3.0 9.0 75.1 3.0 9.0 75.1 3.0 9.0 75.1 3.0 Dhabab P019 6.0 6.0 6.0 6.0 4.2 69.2 1.8 4.2 69.2 1.8 4.2 69.2 1.8 4.2 69.2 1.8 Hail Al Ghaf P036 6.0 6.0 6.0 6.0 4.8 79.7 1.2 4.8 79.7 1.2 4.8 79.7 1.2 4.8 79.7 1.2 Al Mazara P074 6.0 6.0 6.0 6.0 3.2 52.7 2.8 3.2 52.7 2.8 3.2 52.7 2.8 3.2 52.7 2.8 Wadi Al Arbyeen P124 1TX 1TX 1TX 1TX 1.3 - - 1.3 - - 1.3 - - 1.3 - - Street Light P020 1TX 1TX 1TX 1TX 0.7 - - 0.7 - - 0.7 - - 0.7 - - RoyalCamp P170 1TX 1TX 1TX 1TX 0.0 - - 0.0 - - 0.0 - - 0.0 - - Primary Substations Bus Voltages 2017 2018 2019 2020 Primary P.No. 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) Al Mazara 1-A P074 98.2 101.9 98.0 101.7 97.8 101.4 97.6 101.2 Al Mazara 1-B P074 - 101.9 - 101.7 - 101.4 - 101.2 Al Shahbari-A P092 100.9 103.9 100.7 103.6 100.5 103.4 100.2 102.9 Al Shahbari-B P092 100.4 103.9 100.2 103.6 100.0 103.0 99.8 102.6 Dhabab-A P019 98.2 101.5 98.0 101.4 97.9 101.2 97.7 101.0 Dhabab-B P019 - 101.5 - 101.4 - 101.2 - 101.0 Dhagmar-A P021 100.6 103.6 100.5 103.4 100.3 103.3 100.1 103.1 Dhagmar-B P021 - 103.6 - 103.5 - 103.3 - 103.2 Dhagmar-C P021 - 103.6 - 103.4 - 103.3 - 103.1 Hayl Ghaf -A P036 99.4 102.7 99.2 102.5 99.0 102.2 98.7 101.9 Hayl Ghaf -B P036 - 102.6 - 102.4 - 102.2 - 101.9 Quriyat-A P091 101.5 102.7 101.4 102.2 101.2 101.6 101.0 101.0 Quriyat-B P091 101.5 102.6 101.3 102.1 101.2 101.5 101.0 100.9 RoyalCamp P170 100.0 104.6 99.9 104.4 99.8 104.3 99.6 104.1 Street Light P020 100.9 104.9 100.8 104.8 100.6 104.6 100.4 104.4 Wadi Al Arbyeen P124 100.2 104.1 100.1 104.0 99.9 103.8 99.8 103.6

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

Primary Substation 3-Phase Fault Current Levels 33kV -Rated SC Capacity(kA) 11kV -Rated SC Capacity(kA) 2017 2018 2019 2020 Primary P.No. 2017 2018 2019 2020 2017 2018 2019 2020 33kV 11kV 33kV 11kV 33kV 11kV 33kV 11kV Al Mazara 1-A P074 25.0 25.0 25.0 25.0 12.5 12.5 12.5 12.5 2.1 3.7 2.1 3.7 2.1 3.7 2.1 3.7 Al Mazara 1-B P074 25.0 25.0 25.0 25.0 16.0 16.0 16.0 16.0 - 3.7 - 3.7 - 3.7 - 3.7 Al Shahbari-A P092 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 9.8 12.7 9.9 12.8 9.8 7.5 9.9 7.6 Al Shahbari-B P092 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 9.9 12.7 10.0 12.8 9.9 7.3 10.0 7.4 Dhabab-A P019 25.0 25.0 25.0 25.0 16.0 16.0 16.0 16.0 1.9 3.6 1.9 3.6 1.9 3.6 1.9 3.6 Dhabab-B P019 25.0 25.0 25.0 25.0 16.0 16.0 16.0 16.0 - 3.6 - 3.6 - 3.6 - 3.6 Dhagmar-A P021 25.0 25.0 25.0 25.0 12.5 12.5 12.5 12.5 8.6 4.3 8.6 4.3 8.7 4.3 8.7 4.3 Dhagmar-B P021 25.0 25.0 25.0 25.0 12.5 12.5 12.5 12.5 - 4.4 - 4.4 - 4.4 - 4.4 Dhagmar-C P021 25.0 25.0 25.0 25.0 12.5 12.5 12.5 12.5 - 4.2 - 4.2 - 4.2 - 4.2 Hayl Ghaf -A P036 25.0 25.0 25.0 25.0 12.5 12.5 12.5 12.5 5.2 3.9 5.2 3.9 5.2 3.9 5.2 3.9 Hayl Ghaf -B P036 25.0 25.0 25.0 25.0 16.0 16.0 16.0 16.0 - 3.7 - 3.7 - 3.7 - 3.7 Quriyat-A P091 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 15.7 7.4 15.8 7.5 16.2 7.6 16.3 7.7 Quriyat-B P091 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 15.7 7.4 15.8 7.5 16.2 7.6 16.3 7.7 RoyalCamp P170 25.0 25.0 25.0 25.0 16.0 16.0 16.0 16.0 4.4 2.2 4.5 2.2 4.5 2.2 4.5 2.2 Street Light P020 25.0 25.0 25.0 25.0 12.5 12.5 12.5 12.5 10.0 2.7 10.1 2.7 10.2 2.7 10.2 2.7 Wadi Al Arbyeen P124 25.0 25.0 25.0 25.0 12.5 12.5 12.5 12.5 4.8 3.6 4.8 3.6 4.8 3.6 4.9 3.6 33kV Feeder Loads Circuit Rating(MVA) 2017 2018 2019 2020 Primary 2017 2018 2019 2020 MVA %Loading MVA %Loading MVA %Loading MVA %Loading Al Shahbari-A-P092 22.0 22.0 22.0 22.0 9.7 44.0% 10.6 48.2% 11.8 53.5% 12.9 58.7% Al Shahbari-B-P092 22.0 22.0 22.0 22.0 16.5 74.9% 17.4 78.9% 18.2 82.7% 19.2 87.4% Dhagmar 1-F1-P021 22.0 22.0 22.0 22.0 15.2 69.1% 15.2 69.1% 15.2 69.1% 15.2 69.1% Jahloot Feeder-to Hail Ghaf and 22.0 22.0 22.0 22.0 7.9 36.1% 7.9 36.1% 7.9 36.1% 7.9 36.1% Al Mazara Quriyat-A-P091 22.0 22.0 22.0 22.0 10.4 47.3% 11.5 52.1% 12.6 57.3% 13.9 63.2% Quriyat-B-P092 22.0 22.0 22.0 22.0 10.6 48.1% 11.6 52.9% 12.8 58.3% 14.1 64.2%

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

Amerat A Grid Network Results Primary Substations Peak Demand 2017 2018 2019 2020 Primary Substation P.No. MW MVAr MW MVAr MW MVAr MW MVAr Amerat 2 P177 4.2 1.8 4.2 1.8 4.2 1.8 4.2 1.8 Seih Dhabi P118 13.8 6.1 15.2 6.8 - - - - Madinat Al Nahdah* P065 21.0 6.6 23.2 7.2 - - - - Al Nahdah P006 27.2 11.7 30.0 9.9 - - - - Post Office P150 20.5 5.0 22.7 5.5 - - - - Post Office [Upgrade] P150 - - - - 30.6 7.4 33.8 8.2 Amerat Heights P152 21.9 5.6 24.2 6.2 - - - - Amerat Heights P152 - - - - 35.6 9.1 39.3 10.0 [Upgrade] Amerat 3 P179 - - 14.3 4.7 15.8 5.2 17.5 5.7

Percentage Loading of Primary Substations Firm Capacity(MVA) Load'2017 Load'2018 Load'2019 Load'2020 Primary P.No. N-1 N-1 N-1 N-1 2017 2018 2019 2020 MVA % MVA % MVA % MVA % Spare Spare Spare Spare Amerat 2 P177 1TX 1TX 1TX 1TX 4.6 - - 4.6 - - 4.6 - - 4.6 - - Seih Dhabi P118 16.0 16.0 - - 15.1 94.4 0.9 16.7 104.3 -0.7 ------Madinat Al Nahdah* P065 20.0 20.0 - - 22.0 110.0 -2.0 24.3 121.6 -4.3 ------Al Nahdah P006 20.0 20.0 - - 29.6 147.9 -9.6 31.6 158.1 -11.6 ------Post Office P150 20.0 20.0 - - 21.1 105.5 -1.1 23.3 116.6 -3.3 ------Post Office [Upgrade] P150 - - 40.0 40.0 ------31.5 78.6 8.5 34.8 86.9 5.2 Amerat Heights P152 20.0 20.0 - - 22.6 113.0 -2.6 25.0 124.9 -5.0 ------Amerat Heights P152 - - 40.0 40.0 ------36.7 91.8 3.3 40.6 101.4 -0.6 [Upgrade] Amerat 3 P179 - 40.0 40.0 40.0 - - - 15.1 37.7 24.9 16.7 41.6 23.3 18.4 46.0 21.6 Primary Substations Bus Voltages 2017 2018 2019 2020 Primary P.No. 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) Al Nahdah-A P006 97.8 98.2 97.6 98.4 - - - - Al Nahdah-B P006 97.6 97.6 97.4 97.9 - - - - Amerat 2 P177 98.9 100.9 98.7 100.5 100.1 102.0 99.7 101.6 Amerat 3-A P179 - - 99.1 103.7 100.5 105.0 100.0 104.4 Amerat 3-B P179 - - 99.1 103.7 100.5 105.0 100.0 104.4 Amerat 3-C P179 - - 99.1 103.7 100.5 105.0 100.0 104.4 Amerat Heights-A P152 98.8 100.9 98.5 100.4 100.0 102.0 99.5 101.1 Amerat Heights-B P152 98.8 100.9 98.5 100.4 100.0 102.0 99.5 101.1 Amerat Heights-C P152 - - - - 100.0 102.0 99.5 101.1 Madinat Al Nahdah - P065 95.1 98.3 94.4 97.3 - - - - A Madinat Al Nahdah -B P065 99.8 97.0 99.8 96.0 - - - - Post Office-A P150 99.2 101.5 98.9 101.0 100.4 102.9 100.0 102.1 Post Office-B P150 99.2 101.5 98.9 101.0 100.4 102.9 100.0 102.1 Post Office-C P150 - - - - 100.4 102.9 100.0 102.1 Seih Dhabi-A P118 99.4 101.4 99.2 100.9 - - - - Seih Dhabi-B P118 99.4 101.4 99.2 100.9 - - - -

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

Primary Substation 3-Phase Fault Current Levels 33kV -Rated SC Capacity(kA) 11kV -Rated SC Capacity(kA) 2017 2018 2019 2020 Primary P.No. 2017 2018 2019 2020 2017 2018 2019 2020 33kV 11kV 33kV 11kV 33kV 11kV 33kV 11kV Al Nahdah-A P006 25.0 25.0 - - 18.4 18.4 - - 8.8 8.2 9.0 8.3 - - - - Al Nahdah-B P006 25.0 25.0 - - 18.4 18.4 - - 8.8 8.3 9.0 8.4 - - - - Amerat 2 P177 25.0 25.0 25.0 25.0 16.0 16.0 16.0 16.0 8.3 4.3 8.4 4.3 8.5 4.3 8.5 4.3 Amerat 3-A P179 - 25.0 25.0 25.0 - 25.0 25.0 25.0 - - 13.0 7.4 13.5 18.5 13.6 18.7 Amerat 3-B P179 - 25.0 25.0 25.0 - 25.0 25.0 25.0 - - 13.0 7.4 13.5 18.5 13.6 18.7 Amerat 3-C P179 - 25.0 25.0 25.0 - 25.0 25.0 25.0 - - 13.0 7.4 13.5 18.5 13.6 18.7 Amerat Heights-A P152 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 13.1 14.5 13.5 14.8 13.4 8.1 13.5 8.3 Amerat Heights-B P152 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 13.1 14.5 13.5 14.8 13.4 8.2 13.5 8.3 Amerat Heights-C P152 - - 25.0 25.0 - - 25.0 25.0 - - - - 13.4 8.2 13.5 8.3 Madinat Al Nahdah-A P065 25.0 25.0 - - 18.4 18.4 - - 6.4 6.7 6.5 6.9 - - - -

Madinat Al Nahdah-B P065 25.0 25.0 - - 18.4 18.4 - - 2.6 4.4 2.6 4.5 - - - - Post Office-A P150 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 16.7 8.1 17.2 8.3 17.6 14.8 17.7 15.1 Post Office-B P150 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 16.7 8.1 17.2 8.3 17.5 14.8 17.7 15.1 Post Office-C P150 - - 25.0 25.0 - - 25.0 25.0 - - - - 17.5 8.2 17.7 8.3 Seih Dhabi-A P118 25.0 25.0 - - 18.4 18.4 - - 20.7 13.7 21.5 14.0 - - - - Seih Dhabi-B P118 25.0 25.0 - - 18.4 18.4 - - 20.7 13.7 21.5 14.0 - - - - 33kV Feeder Loads Circuit Rating(MVA) 2017 2018 2019 2020 Primary 2017 2018 2019 2020 MVA %Loading MVA %Loading MVA %Loading MVA %Loading Al Nahdah-A 22.0 22.0 - - 14.9 67.8% 15.9 72.3% - - - - Al Nahdah-B 22.0 22.0 - - 16.3 74.1% 17.4 78.9% - - - - Amerat 2 22.0 22.0 22.0 22.0 4.7 21.2% 4.7 21.4% 4.7 21.4% 4.7 21.4% Amerat 3-A - 22.0 22.0 22.0 - - 4.9 22.1% 5.3 24.2% 5.9 26.7% Amerat 3-B - 22.0 22.0 22.0 - - 4.9 22.1% 5.4 24.4% 5.9 26.9% Amerat 3-C - 22.0 22.0 22.0 - - 4.9 22.1% 5.3 24.2% 5.9 26.6% Amerat Heights-A 22.0 22.0 22.0 22.0 11.5 52.1% 12.7 57.9% 12.5 56.7% 13.9 63.0% Amerat Heights-B 22.0 22.0 22.0 22.0 11.5 52.4% 12.8 58.1% 12.5 56.7% 13.9 63.0% Amerat Heights-C - - 22.0 22.0 - - - - 12.5 56.7% 13.9 63.0% Madinat Al Nahdah-A 22.0 22.0 - - 13.5 61.2% 15.0 68.1% - - - - Madinat Al Nahdah-B 22.0 22.0 - - 9.7 44.3% 10.9 49.5% - - - - Post Office-A 22.0 22.0 22.0 22.0 10.8 49.1% 12.0 54.4% 10.6 48.4% 11.8 53.6% Post Office-B 22.0 22.0 22.0 22.0 10.7 48.6% 11.9 53.9% 10.7 48.5% 11.8 53.8% Post Office-C - - 22.0 22.0 - - - - 10.7 48.5% 11.8 53.7% Seih Dhabi-A 22.0 22.0 - - 7.7 35.1% 8.6 38.9% - - - - Seih Dhabi-B 22.0 22.0 - - 7.7 35.1% 8.6 38.9% - - - - * Madinat Al Nahdah – P065 is having split feeder source arrangement with Feeder 1 connected from Amerat A Grid and Feeder 2 connected from Jahloot grid. By 2019, both the incoming feeders will be connected from one source i.e. Amerat B grid.

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

Amerat B Grid Network Results Primary Substations Peak Demand 2017 2018 2019 2020 Primary Substation P.No. MW MVAr MW MVAr MW MVAr MW MVAr Al Nahdah P006 - - - - 33.2 10.9 36.7 12.1 [Upgrading] Seih Dhabi P118 - - - - 11.3 5.0 12.5 5.6 Madinat Al Nahdah P065 - - - - 14.6 4.6 16.1 5.0 Amerat 4 P180 - - - - 11.1 3.6 12.2 4.0 Percentage Loading of Primary Substations Firm Capacity(MVA) Load'2017 Load'2018 Load'2019 Load'2020 Primary P.No. N-1 N-1 N-1 N-1 2017 2018 2019 2020 MVA % MVA % MVA % MVA % Spare Spare Spare Spare Al Nahdah P006 - - 40.0 40.0 ------34.9 87.3 5.1 38.6 96.5 1.4 [Upgrading] Seih Dhabi P118 - - 16.0 16.0 ------12.4 77.5 3.6 13.7 85.6 2.3 Madinat Al Nahdah P065 - - 20.0 20.0 ------15.3 76.4 4.7 16.9 84.5 3.1 Amerat 4 P180 - - 40.0 40.0 ------11.6 29.1 28.4 12.9 32.1 27.1 Primary Substations Bus Voltages 2017 2018 2019 2020 Primary P.No. 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) Al Nahdah-A P006 - - - - 100.0 101.9 99.6 101.2 Al Nahdah-B P006 - - - - 100.0 101.9 99.6 101.2 Al Nahdah-C P006 - - - - 100.0 101.9 99.6 101.2 Seih Dhabi-A P118 - - - - 100.6 103.2 100.2 102.5 Seih Dhabi-B P118 - - - - 100.6 103.2 100.2 102.5 Madinat Al Nahdah - P065 - - - - 99.8 102.1 99.3 101.4 A Madinat Al Nahdah -B P065 - - - - 100.2 103.2 99.8 102.7 Amerat 4-A P180 - - - - 101.0 104.7 100.7 104.3 Amerat 4-B P180 - - - - 101.0 104.7 100.7 104.3 Amerat 4-C P180 - - - - 101.0 104.7 100.7 104.3 Primary Substation 3-Phase Fault Current Levels 33kV -Rated SC Capacity(kA) 11kV -Rated SC Capacity(kA) 2017 2018 2019 2020 Primary P.No. 2017 2018 2019 2020 2017 2018 2019 2020 33kV 11kV 33kV 11kV 33kV 11kV 33kV 11kV Al Nahdah-A P006 - - 25.0 25.0 - - 18.4 18.4 - - - - 9.3 14.4 9.4 14.6 Al Nahdah-B P006 - - 25.0 25.0 - - 18.4 18.4 - - - - 9.3 14.4 9.4 14.6 Al Nahdah-C P006 - - 25.0 25.0 - - 25.0 25.0 - - - - 8.8 7.9 8.8 8.0 Seih Dhabi-A P118 - - 25.0 25.0 - - 18.4 18.4 - - - - 21.9 13.6 22.2 13.8 Seih Dhabi-B P118 - - 25.0 25.0 - - 18.4 18.4 - - - - 21.9 13.6 22.2 13.8 Madinat Al Nahdah-A P065 - - 25.0 25.0 - - 18.4 18.4 - - - - 6.3 6.3 6.4 6.4

Madinat Al Nahdah-B P065 - - 25.0 25.0 - - 18.4 18.4 - - - - 6.3 6.1 6.3 6.2 Amerat 4-A P180 - - 25.0 25.0 - - 25.0 25.0 - - - - 13.2 17.7 13.2 17.8 Amerat 4-B P180 - - 25.0 25.0 - - 25.0 25.0 - - - - 13.2 17.7 13.2 17.8 Amerat 4-C P180 - - 25.0 25.0 - - 25.0 25.0 - - - - 13.2 17.7 13.2 17.8

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

33kV Feeder Loads Circuit Rating(MVA) 2017 2018 2019 2020 Primary 2017 2018 2019 2020 MVA %Loading MVA %Loading MVA %Loading MVA %Loading Al Nahdah-A - - 22.0 22.0 - - - - 12.0 54.7% 13.4 60.8% Al Nahdah-B - - 22.0 22.0 - - - - 12.0 54.5% 13.3 60.5% Al Nahdah-C - - 22.0 22.0 - - - - 12.0 54.6% 13.3 60.7% Seih Dhabi-A - - 22.0 22.0 - - - - 6.3 28.7% 7.0 31.8% Seih Dhabi-B - - 22.0 22.0 - - - - 6.3 28.6% 7.0 31.7% Madinat Al Nahdah-A - - 22.0 22.0 - - - - 9.2 41.6% 10.2 46.2% Madinat Al Nahdah-B - - 22.0 22.0 - - - - 6.5 29.7% 7.2 32.9% Amerat 4-A - - 22.0 22.0 - - - - 3.8 17.2% 4.2 19.1% Amerat 4-B - - 22.0 22.0 - - - - 3.8 17.2% 4.2 19.1% Amerat 4-C - - 22.0 22.0 - - - - 3.8 17.2% 4.2 19.1%

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

Ghubrah Grid Network Results Primary Substations Peak Demand 2017 2018 2019 2020 Primary Substation P.No. MW MVAr MW MVAr MW MVAr MW MVAr Azaibah North 2 P012 18.7 4.8 20.2 5.2 16.4 4.2 17.7 4.5 Azaibah South 1-A P014 15.1 8.8 16.3 5.4 - - - - Ghubrah North 2 P149 27.9 12.1 30.1 9.9 32.5 10.7 35.1 11.6 Ghubrah North 1 P023 35.9 15.4 38.8 12.8 36.5 12.0 39.4 13.0 Diplomatic City P022 24.6 10.5 25.0 8.2 25.4 8.4 25.9 8.5 Ghubrah GPS P166 6.1 2.6 6.1 2.6 6.1 2.6 6.1 2.6 Percentage Loading of Primary Substations Firm Capacity(MVA) Load'2017 Load'2018 Load'2019 Load'2020 Primary P.No. N-1 N-1 N-1 N-1 2017 2018 2019 2020 MVA % MVA % MVA % MVA % Spare Spare Spare Spare Azaibah North 2 P012 20.0 20.0 20.0 20.0 19.3 96.5 0.7 20.8 104.2 -0.8 16.9 84.7 3.1 18.3 91.5 1.7 Azaibah South 1-A P014 20.0 20.0 - - 17.5 87.5 2.5 17.2 85.8 2.8 ------Ghubrah North 2 P149 40.0 40.0 40.0 40.0 30.4 76.0 9.6 31.7 79.3 8.3 34.3 85.6 5.7 37.0 92.5 3.0 Ghubrah North 1 P023 40.0 40.0 40.0 40.0 39.1 97.8 0.9 40.9 102.1 -0.9 38.4 96.1 1.6 41.5 103.8 -1.5 Diplomatic City P022 40.0 40.0 40.0 40.0 26.7 66.8 13.3 26.3 65.8 13.7 26.8 66.9 13.2 27.2 68.1 12.8 Ghubrah GPS P166 16.0 16.0 16.0 16.0 6.7 41.7 9.3 6.7 41.7 9.3 6.7 41.7 9.3 6.7 41.7 9.3 Primary Substations Bus Voltages 2017 2018 2019 2020 Primary P.No. 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) Azaiba North 2-A P012 100.7 103.3 99.8 101.4 100.8 103.7 100.5 103.2 Azaiba North 2-B P012 100.7 103.3 100.2 103.3 100.9 103.7 100.5 103.2 Azaiba South 1A-A P014 99.9 101.1 99.4 101.8 - - - - Azaiba South 1A-B P014 99.8 101.1 99.4 101.8 - - - - Diplomatic City 1-A P022 101.0 103.2 100.3 102.9 101.0 103.7 100.7 103.3 Diplomatic City 1-B P022 100.9 103.2 100.3 102.9 101.0 103.7 100.7 103.3 Diplomatic City 1-C P022 100.9 102.1 100.2 102.0 101.0 102.8 100.7 102.3 Ghubra North 1-A P023 101.0 101.4 100.3 102.2 101.0 102.3 100.7 102.6 Ghubra North 1-B P023 101.0 101.4 100.2 100.1 101.0 102.3 100.6 100.5 Ghubra North 1-C P023 101.0 101.7 100.3 101.4 101.0 102.5 100.7 101.9 Ghubrah GPS-A P166 101.1 104.5 100.4 103.8 101.2 104.6 100.8 104.3 Ghubrah GPS-B P166 101.1 104.5 100.4 103.8 101.2 104.6 100.8 104.3 Ghubrah North 02-A P149 101.1 102.8 100.4 102.4 101.2 103.0 100.9 102.4 Ghubrah North 02-B P149 101.1 102.8 100.4 102.4 101.2 103.0 100.9 102.4 Ghubrah North 02-C P149 100.8 101.5 100.1 101.2 100.8 101.7 100.5 101.0

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

Primary Substation 3-Phase Fault Current Levels 33kV -Rated SC Capacity(kA) 11kV -Rated SC Capacity(kA) 2017 2018 2019 2020 Primary P.No. 2017 2018 2019 2020 2017 2018 2019 2020 33kV 11kV 33kV 11kV 33kV 11kV 33kV 11kV Azaiba North 2-A P012 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 16.4 14.3 16.4 8.2 16.2 14.1 16.3 14.2 Azaiba North 2-B P012 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 16.3 14.3 16.2 7.5 16.2 14.1 16.3 14.2 Azaiba South 1A-A P014 25.0 25.0 - - 25.0 25.0 - - 9.0 12.6 9.0 12.6 - - - - Azaiba South 1A-B P014 25.0 25.0 - - 25.0 25.0 - - 8.6 12.6 8.6 12.6 - - - - Diplomatic City 1-A P022 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 19.5 14.1 19.6 14.1 19.3 14.0 19.4 14.1 Diplomatic City 1-B P022 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 19.5 14.1 19.6 14.1 19.3 14.0 19.4 14.1 Diplomatic City 1-C P022 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 21.1 8.4 21.3 8.4 20.9 8.4 21.0 8.4 Ghubra North 1-A P023 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 22.1 15.4 22.2 8.3 21.9 15.3 22.0 8.3 Ghubra North 1-B P023 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 22.1 15.4 22.3 8.8 21.8 15.3 22.0 8.8 Ghubra North 1-C P023 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 22.1 8.4 22.2 8.4 21.8 8.4 21.9 8.4 Ghubrah GPS-A P166 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 22.7 11.9 22.8 11.9 22.4 11.9 22.5 11.9 Ghubrah GPS-B P166 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 22.7 11.9 22.8 11.9 22.4 11.9 22.5 11.9 Ghubrah North 02-A P149 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 17.2 14.8 17.3 14.9 17.0 14.9 17.1 15.1 Ghubrah North 02-B P149 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 17.2 14.8 17.3 14.9 17.0 14.9 17.1 15.1 Ghubrah North 02-C P149 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 17.1 8.4 17.2 8.5 16.9 8.5 17.0 8.6 33kV Feeder Loads Circuit Rating(MVA) 2017 2018 2019 2020 Primary 2017 2018 2019 2020 MVA %Loading MVA %Loading MVA %Loading MVA %Loading Azaiba North 2-33A-P012 22.0 22.0 22.0 22.0 9.9 45.1% 14.3 65.1% 8.7 39.4% 9.4 42.7% Azaiba North 2-33B-P012 22.0 22.0 22.0 22.0 9.6 43.8% 6.9 31.6% 8.4 38.3% 9.1 41.4% Azaiba South 1A-F2-P014 15.4 15.4 - - 9.0 58.2% 8.8 56.9% - - - - Azaiba South 1A-F2-P014 15.4 15.4 - - 8.8 57.2% 8.6 55.9% - - - - Diplomatic City 1-33A-P022 22.0 22.0 22.0 22.0 7.7 34.8% 7.5 34.2% 7.7 34.8% 7.8 35.4% Diplomatic City 1-33B-P022 22.0 22.0 22.0 22.0 7.8 35.3% 7.6 34.7% 7.8 35.3% 7.9 36.0% Diplomatic City 1-33C-P022 22.0 22.0 22.0 22.0 11.8 53.6% 11.6 52.5% 11.8 53.4% 12.0 54.4% Ghubra North 1-33A-P023 22.0 22.0 22.0 22.0 13.8 62.9% 11.0 49.9% 13.5 61.4% 11.1 50.7% Ghubra North 1-33B-P023 22.0 22.0 22.0 22.0 13.8 62.8% 17.9 81.3% 13.5 61.3% 18.2 82.7% Ghubra North 1-33C-P023 22.0 22.0 22.0 22.0 13.0 58.9% 13.5 61.3% 12.6 57.5% 13.7 62.3% Ghubrah GPS-33A-P166 22.0 22.0 22.0 22.0 3.4 15.4% 3.4 15.4% 3.4 15.4% 3.4 15.4% Ghubrah GPS-33B-P166 22.0 22.0 22.0 22.0 3.3 15.2% 3.3 15.2% 3.3 15.2% 3.3 15.2% Ghubrah North 02-33A-P149 22.0 22.0 22.0 22.0 9.1 41.5% 9.5 43.2% 10.3 46.7% 11.1 50.6% Ghubrah North 02-33B-P149 22.0 22.0 22.0 22.0 9.0 40.9% 9.4 42.7% 10.2 46.3% 11.0 50.1% Ghubrah North 02-33C-P149 22.0 22.0 22.0 22.0 13.0 58.9% 13.5 61.4% 14.6 66.5% 15.9 72.1%

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

MSQ-A Grid Network Results Primary Substations Peak Demand 2017 2018 2019 2020 Primary Substation P.No. MW MVAr MW MVAr MW MVAr MW MVAr Al Khuwair North P054 17.3 7.6 18.4 8.1 - - - - Al Khuwair P054 - - - - 19.6 6.4 20.9 6.9 North(Upgrade) MSQ Grid GP06 19.5 8.4 20.4 8.8 16.2 6.9 16.9 7.3 MSQ 1 P083 18.9 6.5 ------Royal Office P097 6.2 2.7 6.2 2.0 6.2 2.0 6.2 2.0 Intercontinental P109 13.4 6.5 13.6 4.5 13.9 4.6 14.1 4.6 Al Khuwair School P146 17.4 7.5 ------Information City 2 P038 0.5 0.2 0.5 0.2 0.5 0.2 0.5 0.2 Sarooj -Shati Al Qurum P110 17.1 7.8 17.4 7.9 17.7 8.1 18.0 8.2 Digital TV Studio P039 2.0 0.9 ------Percentage Loading of Primary Substations Firm Capacity(MVA) Load'2017 Load'2018 Load'2019 Load'2020 Primary P.No. N-1 N-1 N-1 N-1 2017 2018 2019 2020 MVA % MVA % MVA % MVA % Spare Spare Spare Spare Al Khuwair North P054 20.0 20.0 - - 18.9 94.5 1.1 20.1 100.6 -0.1 ------Al Khuwair P054 - - 40.0 40.0 ------20.6 51.6 19.4 22.0 54.9 18.0 North(Upgrade) MSQ Grid GP06 20.0 20.0 20.0 20.0 21.2 106.0 -1.2 22.2 111.1 -2.2 17.6 87.9 2.4 18.4 92.2 1.6 MSQ 1 P083 20.0 - - - 20.0 100.0 0.0 ------Royal Office P097 20.0 20.0 20.0 20.0 6.8 33.8 13.2 6.5 32.7 13.5 6.5 32.7 13.5 6.5 32.7 13.5 Intercontinental P109 20.0 20.0 20.0 20.0 14.9 74.5 5.1 14.4 71.8 5.6 14.6 73.0 5.4 14.9 74.3 5.1 Al Khuwair School P146 40.0 - - - 18.9 47.3 21.1 ------Information City 2 P038 1TX 1TX 1TX 1TX 0.5 - - 0.5 - - 0.5 - - 0.5 - - Sarooj -Shati Al Qurum P110 20.0 20.0 20.0 20.0 18.8 94.0 1.2 19.1 95.6 0.9 19.5 97.3 0.5 19.8 99.0 0.2 Digital TV Studio P039 20.0 - - - 2.2 11.0 17.8 ------Primary Substations Bus Voltages 2017 2018 2019 2020 Primary P.No. 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) Al Khuwair North-A P054 100.3 102.3 100.0 101.7 100.4 103.5 100.3 103.3 Al Khuwair North-B P054 100.3 102.3 100.0 101.8 100.4 103.5 100.3 103.3 Al Khuwair North-C P054 - - - - 100.4 103.5 100.3 103.3 Al Khuwair School-A P146 100.3 103.0 ------Al Khuwair School-B P146 100.3 103.0 ------Al Khuwair School-C P146 100.3 103.1 ------Digital TV Studio-A P039 100.5 104.7 ------Digital TV Studio-B P039 100.5 104.7 ------Information City 2 P038 100.5 104.7 100.2 104.4 100.5 104.7 100.4 104.6 Intercontinental-A P109 100.1 102.7 99.9 103.0 100.2 103.3 100.1 103.2 Intercontinental-B P109 100.2 102.7 99.9 103.0 100.2 103.3 100.1 103.2 MSQ 1-A P083 100.3 102.2 ------MSQ 1-B P083 100.4 102.2 ------MSQ Grid-A GP06 100.5 103.1 100.2 102.6 100.5 102.5 100.4 102.2 MSQ Grid-B GP06 100.5 100.6 100.2 100.0 100.5 102.5 100.4 102.2 Royal Office-A P097 100.3 103.9 100.0 103.8 100.4 104.2 100.3 104.1 Royal Office-B P097 100.3 103.9 100.0 103.8 100.4 104.2 100.3 104.1 Sarooj -Shati Al Qurum-A P110 100.1 102.2 99.8 101.8 100.1 102.2 100.0 102.0

Sarooj -Shati Al Qurum-B P110 100.1 102.2 99.8 101.8 100.1 102.2 100.0 102.0

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

Primary Substation 3-Phase Fault Current Levels 33kV -Rated SC Capacity(kA) 11kV -Rated SC Capacity(kA) 2017 2018 2019 2020 Primary P.No. 2017 2018 2019 2020 2017 2018 2019 2020 33kV 11kV 33kV 11kV 33kV 11kV 33kV 11kV Al Khuwair North-A P054 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 20.3 16.1 19.3 8.9 19.9 15.5 17.2 15.6 Al Khuwair North-B P054 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 20.3 16.1 19.3 9.0 19.9 15.5 17.2 15.6 Al Khuwair North-C P054 - - 25.0 25.0 - - 25.0 25.0 - - - - 19.8 8.6 17.1 8.6 Al Khuwair School-A P146 25.0 - - - 25.0 - - - 18.2 14.1 ------Al Khuwair School-B P146 25.0 - - - 25.0 - - - 18.2 14.1 ------Al Khuwair School-C P146 25.0 - - - 25.0 - - - 18.1 7.7 ------Digital TV Studio-A P039 25.0 - - - 18.4 - - - 16.9 13.0 ------Digital TV Studio-B P039 25.0 - - - 18.4 - - - 16.9 13.0 ------Information City 2 P038 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 11.5 3.2 11.2 3.2 11.3 3.2 10.4 3.2 Intercontinental-A P109 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 15.3 16.0 14.7 15.7 15.0 15.9 13.4 15.9 Intercontinental-B P109 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 15.4 16.0 14.9 15.7 15.2 15.9 13.4 15.9 MSQ 1-A P083 25.0 - - - 20.0 - - - 20.7 14.8 ------MSQ 1-B P083 25.0 - - - 20.0 - - - 20.7 14.8 ------MSQ Grid-A GP06 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 24.8 8.2 23.3 8.2 24.1 15.2 20.5 15.2 MSQ Grid-B GP06 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 24.8 9.0 23.3 9.0 24.1 15.2 20.5 15.2 Royal Office-A P097 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 14.7 13.1 14.3 12.9 14.5 13.0 14.8 13.0 Royal Office-B P097 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 14.8 13.1 14.3 12.9 14.5 13.0 14.8 13.0 Sarooj -Shati Al Qurum-A P110 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 16.2 16.5 15.6 16.3 16.0 16.4 13.9 16.5

Sarooj -Shati Al Qurum-B P110 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 16.2 16.5 15.6 16.3 16.0 16.4 13.8 16.5 33kV Feeder Loads Circuit Rating(MVA) 2017 2018 2019 2020 Primary 2017 2018 2019 2020 MVA %Loading MVA %Loading MVA %Loading MVA %Loading Al Khuwair North-A-P054 22.0 22.0 22.0 22.0 9.6 43.7% 10.3 46.8% 6.9 31.4% 7.4 33.4% Al Khuwair North-B-P054 22.0 22.0 22.0 22.0 9.7 44.3% 10.3 46.8% 7.0 31.8% 7.5 33.9% Al Khuwair North-C-P054 - - 22.0 22.0 - - - - 6.9 31.6% 7.4 33.7% Al Khuwair School-A-P146 22.0 - - - 6.5 29.8% ------Al Khuwair School-B-P146 22.0 - - - 6.6 29.9% ------Al Khuwair School-C-P146 22.0 - - - 6.1 27.9% ------Digital TV Studio-A-P039 22.0 - - - 1.0 4.7% ------Digital TV Studio-B-P039 22.0 - - - 1.0 4.6% ------Intercontinental-A-P109 22.0 22.0 22.0 22.0 7.5 33.9% 7.2 32.7% 7.3 33.3% 7.4 33.9% Intercontinental-B-P109 22.0 22.0 22.0 22.0 7.6 34.4% 7.3 33.0% 7.4 33.6% 7.5 34.2% MSQ 1-A-P083 22.0 - - - 10.3 46.9% ------MSQ 1-B-P083 22.0 - - - 10.1 46.1% ------MSQ Grid-A-GP06 22.0 22.0 22.0 22.0 7.0 31.7% 7.3 33.2% 9.0 40.9% 9.4 42.9% MSQ Grid-B-GP06 22.0 22.0 22.0 22.0 15.1 68.6% 15.9 72.1% 9.1 41.4% 9.6 43.5% Royal Office-A-P097 22.0 22.0 22.0 22.0 3.5 15.7% 3.3 15.2% 3.3 15.2% 3.3 15.2% Royal Office-B-P097 22.0 22.0 22.0 22.0 3.4 15.4% 3.3 14.9% 3.3 14.9% 3.3 14.9% Sarooj -Shati Al Qurum-B-P110 22.0 22.0 22.0 22.0 9.5 43.1% 9.7 43.9% 9.8 44.7% 10.0 45.5% Sarooj -Shati Al Qurum-A-P110 22.0 22.0 22.0 22.0 9.5 43.1% 9.7 43.9% 9.8 44.7% 10.0 45.5%

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

MSQ-B Grid Network Results Primary Substations Peak Demand 2017 2018 2019 2020 Primary Substation P.No. MW MVAr MW MVAr MW MVAr MW MVAr Al Khuwair 25 P053 21.1 7.5 16.1 5.3 17.1 5.6 18.2 6.0 Al Khuwair School P146 - - 31.3 10.3 33.3 10.9 35.4 11.6 MSQ 1 P083 - - 19.8 6.9 17.6 6.1 18.5 6.4 ROP -Shati Al Qurum P111 14.0 6.0 14.2 6.1 14.5 6.2 14.7 6.3 Digital TV Studio P039 - - 2.0 0.7 2.0 0.7 2.0 0.7 Percentage Loading of Primary Substations Firm Capacity(MVA) Load'2017 Load'2018 Load'2019 Load'2020 Primary P.No. N-1 N-1 N-1 N-1 2017 2018 2019 2020 MVA % MVA % MVA % MVA % Spare Spare Spare Spare Al Khuwair 25 P053 20.0 20.0 20.0 20.0 22.4 112.0 -2.4 16.9 84.6 3.1 18.0 90.1 2.0 19.2 95.9 0.8 Al Khuwair School P146 - 40.0 40.0 40.0 - - - 32.9 82.3 7.1 35.0 87.6 5.0 37.3 93.3 2.7 MSQ 1 P083 - 20.0 20.0 20.0 - - - 21.0 104.8 -1.0 18.6 93.2 1.4 19.5 97.7 0.5 ROP -Shati Al Qurum P111 20.0 20.0 20.0 20.0 15.2 76.2 4.8 15.5 77.5 4.5 15.8 78.8 4.2 16.0 80.2 4.0 Digital TV Studio P039 - 20.0 20.0 20.0 - - - 2.1 10.5 17.9 2.1 10.5 17.9 2.1 10.5 17.9 Primary Substations Bus Voltages 2017 2018 2019 2020 Primary P.No. 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) Al Khuwair 25-A P053 100.6 101.5 99.9 102.4 99.8 102.1 100.8 103.1 Al Khuwair 25-B P053 100.8 103.1 99.9 102.4 99.8 102.1 100.8 103.1 Al Khuwair School-A P146 - - 99.9 101.7 99.8 101.4 100.8 102.3 Al Khuwair School-B P146 - - 99.9 101.7 99.8 101.4 100.8 102.3 Al Khuwair School-C P146 - - 99.9 101.7 99.8 101.4 100.8 102.3 Digital TV Studio-A P039 - - 100.2 104.5 100.1 104.4 101.2 105.5 Digital TV Studio-B P039 - - 100.2 104.5 100.1 104.4 101.2 105.5 MSQ 1-A P083 - - 100.1 102.0 100.0 102.1 101.0 103.0 MSQ 1-B P083 - - 100.0 101.5 100.0 102.1 101.0 103.0 ROP -Shati Al Qurum-A P111 100.9 103.6 100.0 102.6 99.9 102.5 100.9 103.6 ROP -Shati Al Qurum-B P111 100.9 103.6 100.0 102.6 99.9 102.5 100.9 103.6 Primary Substation 3-Phase Fault Current Levels 33kV -Rated SC Capacity(kA) 11kV -Rated SC Capacity(kA) 2017 2018 2019 2020 Primary P.No. 2017 2018 2019 2020 2017 2018 2019 2020 33kV 11kV 33kV 11kV 33kV 11kV 33kV 11kV Al Khuwair 25-A P053 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 9.7 7.8 14.2 14.2 15.1 14.6 13.5 14.7 Al Khuwair 25-B P053 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 9.7 7.3 14.3 14.2 15.2 14.6 13.5 14.7 Al Khuwair School-A P146 - 25.0 25.0 25.0 - 25.0 25.0 25.0 - - 16.8 14.6 18.1 15.0 15.7 15.2 Al Khuwair School-B P146 - 25.0 25.0 25.0 - 25.0 25.0 25.0 - - 16.8 14.6 18.2 15.0 15.7 15.2 Al Khuwair School-C P146 - 25.0 25.0 25.0 - 25.0 25.0 25.0 - - 16.7 8.1 18.1 8.2 15.7 8.3 Digital TV Studio-A P039 - 25.0 25.0 25.0 - 18.4 18.4 18.4 - - 15.7 12.6 16.8 12.9 14.3 12.9 Digital TV Studio-B P039 - 25.0 25.0 25.0 - 18.4 18.4 18.4 - - 15.6 12.6 16.8 12.9 14.3 12.9 MSQ 1-A P083 - 25.0 25.0 25.0 - 20.0 20.0 20.0 - - 18.7 8.0 20.5 14.6 17.6 14.7 MSQ 1-B P083 - 25.0 25.0 25.0 - 20.0 20.0 20.0 - - 18.8 8.1 20.5 14.6 17.6 14.7 ROP -Shati Al Qurum-A P111 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 10.7 13.6 16.2 15.9 17.5 16.3 15.3 16.4 ROP -Shati Al Qurum-B P111 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 10.7 13.6 16.2 15.9 17.5 16.3 15.3 16.4

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

33kV Feeder Loads Circuit Rating(MVA) 2017 2018 2019 2020 Primary 2017 2018 2019 2020 MVA %Loading MVA %Loading MVA %Loading MVA %Loading Al Khuwair 25-A-P053 15.4 15.4 15.4 15.4 14.0 90.8% 8.6 56.0% 9.2 59.7% 9.8 63.7% Al Khuwair 25-B-P053 15.4 15.4 15.4 15.4 9.1 59.2% 8.6 55.9% 9.2 59.7% 9.8 63.6% Al Khuwair School-A-P146 - 22.0 22.0 22.0 - - 11.2 51.1% 12.0 54.5% 12.8 58.1% Al Khuwair School-B-P146 - 22.0 22.0 22.0 - - 11.3 51.4% 12.1 54.9% 12.9 58.5% Al Khuwair School-C-P146 - 22.0 22.0 22.0 - - 11.3 51.3% 12.0 54.7% 12.8 58.3% Digital TV Studio-A-P039 - 22.0 22.0 22.0 - - 1.0 4.6% 1.0 4.6% 1.0 4.6% Digital TV Studio-B-P039 - 22.0 22.0 22.0 - - 1.0 4.6% 1.0 4.6% 1.0 4.6% MSQ 1-A-P083 - 22.0 22.0 22.0 - - 10.0 45.3% 9.6 43.6% 10.1 45.8% MSQ 1-B-P083 - 22.0 22.0 22.0 - - 11.5 52.4% 9.4 42.9% 9.9 45.0% ROP -Shati Al Qurum-A-P111 22.0 22.0 22.0 22.0 7.7 35.0% 7.8 35.7% 8.0 36.3% 8.1 36.9% ROP -Shati Al Qurum-B-P111 22.0 22.0 22.0 22.0 7.6 34.6% 7.8 35.3% 7.9 35.9% 8.0 36.6%

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

Qurum Grid Network Results Primary Substations Peak Demand 2017 2018 2019 2020 Primary Substation P.No. MW MVAr MW MVAr MW MVAr MW MVAr Information City 1 P037 12.9 5.2 13.1 4.3 13.4 4.4 13.6 4.5 Qurum 1 P093 15.6 5.1 16.5 5.4 12.2 3.9 12.9 4.2 Qurum 2 P094 16.2 5.2 17.1 5.6 - - - - Qurum 2(Upgrade) P094 - - - - 12.8 4.3 13.6 4.4 Sarooj04 P181 - - - - 10.6 3.5 11.2 3.7 Lulai P095 14.1 10.0 14.9 4.9 15.8 5.2 16.7 5.5 MSQ 2 P155 12.4 6.7 13.0 4.3 22.0 7.2 23.1 7.6 Rabiat Al Qurum P096 14.9 7.5 15.8 5.2 16.7 5.5 17.6 5.8 Percentage Loading of Primary Substations Firm Capacity(MVA) Load'2017 Load'2018 Load'2019 Load'2020 Primary P.No. N-1 N-1 N-1 N-1 2017 2018 2019 2020 MVA % MVA % MVA % MVA % Spare Spare Spare Spare Information City 1 P037 20.0 20.0 20.0 20.0 13.9 69.5 6.1 13.8 69.1 6.2 14.1 70.3 5.9 14.3 71.5 5.7 Qurum 1 P093 16.0 16.0 16.0 16.0 16.4 102.5 -0.4 17.3 108.4 -1.3 12.8 79.9 3.2 13.5 84.5 2.5 Qurum 2 P094 16.0 16.0 - - 17.0 106.3 -1.0 18.0 112.5 -2.0 ------Qurum 2(Upgrade) P094 - - 20.0 20.0 ------13.5 67.5 6.5 14.3 71.5 5.7 Sarooj04 P181 - - 40.0 40.0 ------11.1 27.8 28.9 11.8 29.4 28.2 Lulai P095 20.0 20.0 20.0 20.0 17.3 86.5 2.7 15.7 78.5 4.3 16.6 83.0 3.4 17.6 87.8 2.4 MSQ 2 P155 40.0 40.0 40.0 40.0 14.1 35.3 25.9 13.7 34.2 26.3 23.2 57.9 16.8 24.3 60.7 15.7 Rabiat Al Qurum P096 20.0 20.0 20.0 20.0 16.7 83.5 3.3 16.6 82.9 3.4 17.5 87.7 2.5 18.6 92.8 1.4 Primary Substations Bus Voltages 2017 2018 2019 2020 Primary P.No. 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) Information City 1-A P037 99.2 101.8 100.0 102.9 99.5 102.4 99.3 102.2 Information City 1-B P037 99.3 101.8 100.1 102.9 99.7 102.4 99.4 102.2 Lulai-A P095 99.4 100.1 100.2 102.7 99.7 102.1 99.5 101.8 Lulai-B P095 99.3 100.1 100.1 102.7 99.7 102.1 99.5 101.8 MSQ 02-A P155 99.4 102.6 100.1 103.6 99.6 102.2 99.3 101.9 MSQ 02-B P155 99.4 102.6 100.1 103.6 99.6 102.2 99.3 101.9 MSQ 02-C P155 99.3 101.6 100.1 103.6 99.6 102.2 99.3 101.9 Qurum 1-A P093 99.0 101.3 99.7 102.0 99.4 102.4 99.2 102.0 Qurum 1-B P093 99.1 101.5 99.8 102.1 99.5 102.4 99.3 102.0 Qurum 2-A P094 99.1 101.3 99.9 102.0 99.6 102.3 99.3 102.0 Qurum 2-B P094 99.2 101.4 99.9 102.1 99.6 102.3 99.4 102.0 Rabiat Al Qurum-A P096 99.5 101.1 100.2 102.7 99.8 102.1 99.6 101.7 Rabiat Al Qurum-B P096 99.5 101.1 100.2 102.7 99.8 102.1 99.6 101.7 Sarooj 4-A P181 - - - - 99.8 103.4 99.5 103.1 Sarooj 4-B P181 - - - - 99.8 103.4 99.5 103.1 Sarooj 4-C P181 - - - - 99.8 103.4 99.5 103.1

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

Primary Substation 3-Phase Fault Current Levels 33kV -Rated SC Capacity(kA) 11kV -Rated SC Capacity(kA) 2017 2018 2019 2020 Primary P.No. 2017 2018 2019 2020 2017 2018 2019 2020 33kV 11kV 33kV 11kV 33kV 11kV 33kV 11kV Information City 1-A P037 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 13.1 13.6 13.1 13.6 13.9 13.9 13.9 14.0 Information City 1-B P037 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 15.8 13.6 15.9 13.6 17.1 13.9 17.2 14.0 Lulai-A P095 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 17.8 13.8 17.9 13.7 19.4 14.0 19.5 14.1 Lulai-B P095 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 16.3 13.8 16.3 13.7 17.6 14.0 17.6 14.1 MSQ 02-A P155 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 14.7 13.2 14.7 13.3 15.8 14.1 15.9 14.2 MSQ 02-B P155 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 14.7 13.2 14.7 13.3 15.8 14.1 15.8 14.2 MSQ 02-C P155 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 14.7 7.6 14.7 7.5 15.8 7.8 15.9 7.8 Qurum 1-A P093 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 11.4 7.1 11.4 7.1 12.3 12.9 12.3 13.0 Qurum 1-B P093 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 12.6 7.2 12.6 7.3 13.5 12.9 13.6 13.0 Qurum 2-A P094 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 13.3 7.1 13.3 7.2 14.3 13.0 14.3 13.1 Qurum 2-B P094 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 14.7 7.3 14.8 7.3 15.8 13.0 15.9 13.1 Rabiat Al Qurum-A P096 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 19.1 14.0 19.2 14.0 21.0 14.4 21.1 14.5 Rabiat Al Qurum-B P096 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 19.1 14.0 19.2 14.0 21.0 14.4 21.1 14.5 Sarooj 4-A P181 - - 25.0 25.0 - - 25.0 25.0 - - - - 16.5 13.2 16.5 13.3 Sarooj 4-B P181 - - 25.0 25.0 - - 25.0 25.0 - - - - 16.5 13.2 16.5 13.3 Sarooj 4-C P181 - - 25.0 25.0 - - 25.0 25.0 - - - - 16.4 7.3 16.4 7.3 33kV Feeder Loads Circuit Rating(MVA) 2017 2018 2019 2020 Primary 2017 2018 2019 2020 MVA %Loading MVA %Loading MVA %Loading MVA %Loading Information City 1-A-P037 22.0 22.0 22.0 22.0 7.0 31.9% 7.0 31.6% 7.1 32.2% 7.2 32.8% Information City 1-B-P037 22.0 22.0 22.0 22.0 7.1 32.3% 7.1 32.1% 7.2 32.7% 7.3 33.3% Lulai-A-P095 22.0 22.0 22.0 22.0 9.0 41.1% 8.1 36.8% 8.6 39.0% 9.1 41.3% Lulai-B-P095 22.0 22.0 22.0 22.0 8.9 40.2% 7.9 36.0% 8.4 38.1% 8.9 40.4% MSQ 02-A-P155 22.0 22.0 22.0 22.0 3.7 16.8% 4.5 20.5% 7.8 35.3% 8.2 37.1% MSQ 02-B-P155 22.0 22.0 22.0 22.0 3.7 16.9% 4.5 20.5% 7.8 35.4% 8.2 37.1% MSQ 02-C-P155 22.0 22.0 22.0 22.0 6.5 29.5% 4.5 20.6% 7.8 35.4% 8.2 37.1% Qurum 1-A-P093 22.0 22.0 22.0 22.0 8.3 37.7% 8.8 39.9% 6.3 28.5% 6.6 30.2% Qurum 1-B-P093 22.0 22.0 22.0 22.0 8.3 37.9% 8.8 40.2% 6.6 30.0% 7.0 31.7% Qurum 2-B-P094 22.0 22.0 22.0 22.0 8.7 39.7% 9.2 41.6% 6.7 30.5% 7.1 32.3% Qurum 2-B-P094 22.0 22.0 22.0 22.0 8.8 40.1% 9.2 42.0% 7.0 31.7% 7.4 33.5% Rabiat Al Qurum-A-P096 22.0 22.0 22.0 22.0 8.6 39.1% 8.5 38.5% 9.0 40.8% 9.5 43.3% Rabiat Al Qurum-B-P096 22.0 22.0 22.0 22.0 8.5 38.7% 8.4 38.2% 8.9 40.5% 9.4 42.9% Sarooj 4-A-P181 - - 22.0 22.0 - - - - 3.7 16.7% 3.9 17.7% Sarooj 4-B-P181 - - 22.0 22.0 - - - - 3.7 16.7% 3.9 17.7% Sarooj 4-C-P181 - - 22.0 22.0 - - - - 3.7 16.7% 3.9 17.7%

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

Bousher-1-A Grid Network Results Primary Substations Peak Demand 2017 2018 2019 2020 Primary Substation P.No. MW MVAr MW MVAr MW MVAr MW MVAr Azaibah South 1-B P147 39.4 16.9 42.6 14.0 - - - - Bousher Grid GP02 22.1 9.9 25.4 8.3 17.6 5.8 20.2 6.6 Bousher 2 P163 - - - - 27.5 9.1 31.6 10.4 Al Khuwair South P052 31.9 10.6 34.0 11.2 36.2 12.0 38.5 12.7 Al Khuwair 17/1 P050 16.4 9.6 17.5 5.7 18.6 6.2 19.8 6.4 Royal Hospital P024 19.5 11.4 19.6 6.5 - - - - Percentage Loading of Primary Substations Firm Capacity(MVA) Load'2017 Load'2018 Load'2019 Load'2020 Primary P.No. N-1 N-1 N-1 N-1 2017 2018 2019 2020 MVA % MVA % MVA % MVA % Spare Spare Spare Spare Azaibah South 1-B P147 40.0 40.0 - - 42.9 107.2 -2.9 44.8 112.0 -4.8 ------Bousher Grid GP02 20.0 20.0 20.0 20.0 24.2 121.0 -4.2 26.7 133.5 -6.7 18.5 92.7 1.5 21.3 106.4 -1.3 Bousher 2 P163 - - 40.0 40.0 ------29.0 72.5 11.0 33.3 83.1 6.7 Al Khuwair South P052 40.0 40.0 40.0 40.0 33.6 84.0 6.4 35.8 89.4 4.2 38.1 95.2 1.9 40.5 101.3 -0.5 Al Khuwair 17/1 P050 20.0 20.0 20.0 20.0 19.0 95.0 1.0 18.4 92.0 1.6 19.6 98.0 0.4 20.8 104.0 -0.8 Royal Hospital P024 40.0 40.0 - - 22.6 56.5 17.4 20.7 51.7 19.3 ------Primary Substations Bus Voltages 2017 2018 2019 2020 Primary P.No. 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) Azaiba South 1B-A P147 100.3 101.1 100.1 101.4 - - - - Azaiba South 1B-B P147 100.3 100.9 100.1 101.3 - - - - Azaiba South 1B-C P147 99.8 98.4 99.6 98.9 - - - - Bousher G-A GP02 101.1 101.9 100.9 102.1 101.2 103.6 100.9 102.9 Bousher G-B GP02 101.1 102.2 100.9 102.4 101.2 103.6 100.9 102.9 Bousher 02-A P163 - - - - 101.0 103.2 100.7 102.4 Bousher 02-B P163 - - - - 101.0 101.4 100.7 102.4 Bousher 02-C P163 - - - - 101.0 103.2 100.7 102.4 Al Khuwair South-A P052 101.0 103.9 100.8 103.6 101.0 102.9 100.7 102.4 Al Khuwair South-B P052 101.0 103.9 100.8 103.6 101.0 102.9 100.7 102.4 Al Khuwair South-C P052 100.9 101.8 100.7 101.3 101.0 102.9 100.7 102.4 Al Khuwair 17/1-A P050 100.8 102.0 100.7 103.0 100.9 103.1 100.6 102.6 Al Khuwair 17/1-B P050 100.8 101.8 100.6 103.0 100.9 103.1 100.5 102.6 Royal Hospital-A P024 100.8 102.9 100.7 103.6 - - - - Royal Hospital-B P024 100.8 102.9 100.7 103.6 - - - - Royal Hospital-C P024 100.7 101.9 100.7 103.6 - - - -

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

Primary Substation 3-Phase Fault Current Levels 33kV -Rated SC Capacity(kA) 11kV -Rated SC Capacity(kA) 2017 2018 2019 2020 Primary P.No. 2017 2018 2019 2020 2017 2018 2019 2020 33kV 11kV 33kV 11kV 33kV 11kV 33kV 11kV Azaiba South 1B-A P147 25.0 25.0 - - 25.0 25.0 - - 13.7 7.9 13.7 7.9 - - - - Azaiba South 1B-B P147 25.0 25.0 - - 25.0 25.0 - - 13.7 7.9 13.7 8.0 - - - - Azaiba South 1B-C P147 25.0 25.0 - - 25.0 25.0 - - 13.8 8.4 13.8 8.5 - - - - Bousher G-A GP02 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 24.8 8.8 24.7 8.9 24.1 15.2 24.4 15.5 Bousher G-B GP02 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 24.8 8.7 24.7 8.7 24.1 15.2 24.4 15.5 Bousher 02-A P163 - - 25.0 25.0 - - 25.0 25.0 - - - - 19.8 14.4 20.0 14.7 Bousher 02-B P163 - - 25.0 25.0 - - 25.0 25.0 - - - - 19.8 14.4 20.0 14.7 Bousher 02-C P163 - - 25.0 25.0 - - 25.0 25.0 - - - - 19.7 8.0 20.0 8.1 Al Khuwair South-A P052 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 21.0 16.5 21.0 16.6 20.6 17.1 20.8 17.3 Al Khuwair South-B P052 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 21.0 16.5 21.0 16.6 20.6 17.1 20.8 17.3 Al Khuwair South-C P052 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 21.2 10.0 21.1 10.1 20.7 9.7 20.9 9.7 Al Khuwair 17/1-A P050 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 17.9 8.1 17.9 14.7 17.6 14.7 17.8 14.8 Al Khuwair 17/1-B P050 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 17.8 8.2 17.9 14.7 17.6 14.7 17.8 14.8 Royal Hospital-A P024 25.0 25.0 - - 20.0 20.0 - - 16.4 13.7 16.4 13.7 - - - - Royal Hospital-B P024 25.0 25.0 - - 20.0 20.0 - - 16.4 13.7 16.4 13.7 - - - - Royal Hospital-C P024 25.0 25.0 - - 20.0 20.0 - - 16.3 7.8 16.2 7.6 - - - - 33kV Feeder Loads Circuit Rating(MVA) 2017 2018 2019 2020 Primary 2017 2018 2019 2020 MVA %Loading MVA %Loading MVA %Loading MVA %Loading Azaiba South 1B-A-P147 22.0 22.0 - - 12.4 56.2% 12.9 58.6% - - - - Azaiba South 1B-B-P147 22.0 22.0 - - 12.9 58.7% 13.5 61.2% - - - - Azaiba South 1B-C-P147 22.0 22.0 - - 19.4 88.1% 20.2 91.6% - - - - Bousher Grid H-BB01 22.0 22.0 22.0 22.0 13.1 59.5% 14.4 65.4% 9.5 43.2% 10.9 49.7% Bousher Grid H-BB02 22.0 22.0 22.0 22.0 12.0 54.5% 13.2 59.9% 9.5 43.0% 10.9 49.5% Bousher 02-A-P163 - - 22.0 22.0 - - - - 9.9 44.8% 11.4 51.7% Bousher 02-B-P163 - - 22.0 22.0 - - - - 9.9 44.8% 11.4 51.7% Bousher 02-C-P163 - - 22.0 22.0 - - - - 9.9 44.8% 11.4 51.7% Al Khuwair South-A-P052 22.0 22.0 22.0 22.0 8.5 38.8% 9.1 41.4% 13.1 59.3% 13.9 63.3% Al Khuwair South-B-P052 22.0 22.0 22.0 22.0 8.5 38.7% 9.1 41.2% 13.0 59.1% 13.9 63.0% Al Khuwair South-C-P052 22.0 22.0 22.0 22.0 17.5 79.5% 18.7 84.9% 13.0 59.2% 13.9 63.2% Al Khuwair 17/1-A-P050 22.0 22.0 22.0 22.0 9.5 43.2% 9.3 42.1% 9.9 45.0% 10.6 48.0% Al Khuwair 17/1-B-P050 22.0 22.0 22.0 22.0 9.9 45.1% 9.4 42.6% 10.0 45.5% 10.7 48.5% Royal Hospital-A-P024 22.0 22.0 - - 6.7 30.6% 6.8 30.9% - - - - Royal Hospital-B-P024 22.0 22.0 - - 6.8 31.0% 6.9 31.3% - - - - Royal Hospital-C-P024 22.0 22.0 - - 9.2 42.0% 6.8 31.1% - - - -

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

Bousher-1-B Grid Network Results Primary Substations Peak Demand 2017 2018 2019 2020 Primary Substation P.No. MW MVAr MW MVAr MW MVAr MW MVAr Al Ansab 1 P007 20.6 6.2 22.0 6.6 - - - - Azaibah North 1 P011 18.9 7.4 20.4 6.7 - - - - Azaibah North P011 - - - - 32.8 10.8 35.5 11.7 1(upgrade) Ghubrah South 1 P026 27.0 11.1 27.2 8.9 - - - - Holiday Inn P051 29.4 9.8 31.3 10.5 33.3 11.1 35.5 11.9 Al Muna P084 31.4 13.5 36.1 11.9 25.3 8.3 29.1 9.5 Tilal Al Khuwair P055 24.8 10.6 26.4 8.7 28.1 9.2 29.9 9.8 Azaibah South(New) P189 ------16.2 5.3 Percentage Loading of Primary Substations Firm Capacity(MVA) Load'2017 Load'2018 Load'2019 Load'2020 Primary P.No. N-1 N-1 N-1 N-1 2017 2018 2019 2020 MVA % MVA % MVA % MVA % Spare Spare Spare Spare Al Ansab 1 P007 20.0 20.0 - - 21.5 107.5 -1.5 22.9 114.6 -2.9 ------Azaibah North 1 P011 20.0 20.0 - - 20.3 101.5 -0.3 21.5 107.4 -1.5 ------Azaibah North P011 - - 40.0 40.0 ------34.6 86.4 5.4 37.3 93.3 2.7 1(upgrade) Ghubrah South 1 P026 40.0 40.0 - - 29.2 73.0 10.8 28.6 71.6 11.4 ------Holiday Inn P051 40.0 40.0 40.0 40.0 31.0 77.5 9.0 33.0 82.5 7.0 35.1 87.8 4.9 37.4 93.5 2.6 Al Muna P084 20.0 20.0 20.0 20.0 34.2 171.0 -14.2 38.0 189.8 -18.0 26.7 133.3 -6.7 30.6 152.9 -10.6 Tilal Al Khuwair P055 40.0 40.0 40.0 40.0 27.0 67.4 13.0 27.8 69.4 12.2 29.6 73.9 10.4 31.5 78.7 8.5 Azaibah South(New) P189 - - - 40.0 ------17.1 42.6 22.9 Primary Substations Bus Voltages 2017 2018 2019 2020 Primary P.No. 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) Al Ansab 1-A P007 100.2 103.3 99.3 102.3 - - - - Al Ansab 1-B P007 99.4 100.3 98.4 98.9 - - - - Azaiba North 1-A P011 100.1 102.0 99.2 101.2 99.8 101.5 100.0 101.4 Azaiba North 1-B P011 100.1 101.7 99.2 101.0 99.8 101.5 100.0 101.4 Azaiba North 1-C P011 - - - - 99.8 101.5 100.0 101.4 Ghubrah South 1-A P026 100.3 102.5 99.5 102.0 - - - - Ghubrah South 1-B P026 100.3 102.5 99.5 102.0 - - - - Ghubrah South 1-C P026 100.4 102.8 99.5 102.3 - - - - Holiday Inn-A P051 100.5 102.7 99.7 101.6 100.2 102.0 100.5 102.3 Holiday Inn-B P051 100.5 102.7 99.7 101.6 100.2 102.0 100.4 101.8 Holiday Inn-C P051 100.5 101.9 99.6 100.7 100.2 101.1 100.4 101.1 Al Muna 1-A P084 99.8 98.9 98.9 98.2 99.8 100.9 99.9 100.5 Al Muna 1-B P084 99.8 98.5 98.9 97.8 99.8 100.7 99.9 100.2 Tilal Al Khuwair-A P055 100.6 102.7 99.7 102.1 100.3 102.6 100.5 102.7 Tilal Al Khuwair-B P055 100.6 102.7 99.7 102.1 100.3 102.6 100.5 102.7 Tilal Al Khuwair-C P055 100.6 102.1 99.7 101.6 100.2 102.0 100.5 102.1 Azaibah South(New)-A P189 ------100.5 103.7 Azaibah South(New)-B P189 ------100.5 103.7 Azaibah South(New)-C P189 ------100.5 103.7

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

Primary Substation 3-Phase Fault Current Levels 33kV -Rated SC Capacity(kA) 11kV -Rated SC Capacity(kA) 2017 2018 2019 2020 Primary P.No. 2017 2018 2019 2020 2017 2018 2019 2020 33kV 11kV 33kV 11kV 33kV 11kV 33kV 11kV Al Ansab 1-A P007 25.0 25.0 - - 20.0 20.0 - - 11.5 7.3 11.5 7.3 - - - - Al Ansab 1-B P007 25.0 25.0 - - 20.0 20.0 - - 11.7 8.0 11.7 8.0 - - - - Azaiba North 1-A P011 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 14.2 7.9 14.2 8.0 14.2 14.5 14.4 14.8 Azaiba North 1-B P011 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 14.2 8.0 14.2 8.0 14.2 14.5 14.4 14.8 Azaiba North 1-C P011 - - 25.0 25.0 - - 25.0 25.0 - - - - 14.0 8.0 14.2 8.1 Ghubrah South 1-A P026 25.0 25.0 - - 18.4 18.4 - - 17.2 16.2 17.2 16.2 - - - - Ghubrah South 1-B P026 25.0 25.0 - - 18.4 18.4 - - 17.2 16.2 17.3 16.2 - - - - Ghubrah South 1-C P026 25.0 25.0 - - 18.4 18.4 - - 17.0 9.0 17.0 9.0 - - - - Holiday Inn-A P051 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 20.3 14.6 20.3 14.7 19.8 14.8 20.3 8.2 Holiday Inn-B P051 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 20.1 14.6 20.1 14.7 19.7 14.8 20.1 8.3 Holiday Inn-C P051 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 20.3 8.2 20.3 8.3 19.8 8.3 20.3 8.4 Al Muna 1-A P084 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 15.3 8.4 15.3 8.5 15.0 8.1 15.3 8.3 Al Muna 1-B P084 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 15.3 8.3 15.3 8.5 15.0 8.0 15.3 8.2 Tilal Al Khuwair-A P055 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 21.0 14.8 21.1 14.8 20.5 14.8 21.1 15.0 Tilal Al Khuwair-B P055 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 21.0 14.8 21.1 14.8 20.5 14.8 21.1 15.0 Tilal Al Khuwair-C P055 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 21.0 8.2 21.0 8.2 20.5 8.2 21.0 8.3 Azaibah South(New)-A P189 - - - 25.0 - - - 25.0 ------16.8 7.5 Azaibah South(New)-B P189 - - - 25.0 - - - 25.0 ------16.9 13.5 Azaibah South(New)-C P189 - - - 25.0 - - - 25.0 ------16.9 13.5 33kV Feeder Loads Circuit Rating(MVA) 2017 2018 2019 2020 Primary 2017 2018 2019 2020 MVA %Loading MVA %Loading MVA %Loading MVA %Loading Al Ansab 1-A-P007 22.0 22.0 - - 6.3 28.8% 6.8 30.8% - - - - Al Ansab 1-B-P007 22.0 22.0 - - 15.7 71.2% 16.8 76.4% - - - - Azaiba North 1-A-P011 22.0 22.0 22.0 22.0 9.9 45.2% 10.5 47.9% 11.6 52.9% 12.6 57.3% Azaiba North 1-B-P011 22.0 22.0 22.0 22.0 10.7 48.5% 11.3 51.5% 11.6 52.9% 12.6 57.3% Azaiba North 1-C-P011 - - 22.0 22.0 - - - - 11.6 52.9% 12.6 57.3% Ghubrah South 1-A-P026 22.0 22.0 - - 10.4 47.4% 10.2 46.3% - - - - Ghubrah South 1-B-P026 22.0 22.0 - - 10.3 47.0% 10.1 45.9% - - - - Ghubrah South 1-C-P026 22.0 22.0 - - 9.1 41.6% 8.9 40.6% - - - - Holiday Inn-A-P051 22.0 22.0 22.0 22.0 9.8 44.6% 10.5 47.6% 11.2 50.8% 11.1 50.3% Holiday Inn-B-P051 22.0 22.0 22.0 22.0 9.7 44.0% 10.3 47.0% 11.0 50.1% 12.6 57.4% Holiday Inn-C-P051 22.0 22.0 22.0 22.0 12.4 56.2% 13.2 60.0% 14.1 64.0% 15.0 68.3% Al Muna 1-A-P084 22.0 22.0 22.0 22.0 17.7 80.5% 19.7 89.4% 13.5 61.3% 15.6 70.8% Al Muna 1-B-P084 22.0 22.0 22.0 22.0 18.4 83.7% 20.5 93.0% 14.0 63.6% 16.2 73.6% Tilal Al Khuwair-A-P055 22.0 22.0 22.0 22.0 8.8 40.1% 9.1 41.2% 9.7 43.9% 10.3 46.8% Tilal Al Khuwair-B-P055 22.0 22.0 22.0 22.0 8.5 38.6% 8.7 39.6% 9.3 42.3% 9.9 45.1% Tilal Al Khuwair-C-P055 22.0 22.0 22.0 22.0 10.4 47.1% 10.6 48.3% 11.3 51.5% 12.1 54.9% Azaibah South(New)-A-P189 - - - 22.0 ------5.8 26.2% Azaibah South(New)-B-P189 - - - 22.0 ------5.8 26.2% Azaibah South(New)-C-P189 - - - 22.0 ------5.8 26.2%

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

GhalaHeights Grid Network Results Primary Substations Peak Demand 2017 2018 2019 2020 Primary Substation P.No. MW MVAr MW MVAr MW MVAr MW MVAr Al Ansab 1 P007 - - - - 18.1 5.4 19.3 5.8 Ghubrah South 1 P026 - - - - 27.4 9.0 27.6 9.1 Azaibah South 1-A P014 - - - - 17.6 5.8 19.0 6.3 Azaibah South 1-B P147 - - - - 46.0 15.1 33.4 11.0 Royal Hospital P024 - - - - 19.8 6.5 19.9 6.5 Mall Of Oman P171 - - - - 36.4 12.0 36.4 12.0 Percentage Loading of Primary Substations Firm Capacity(MVA) Load'2017 Load'2018 Load'2019 Load'2020 Primary P.No. N-1 N-1 N-1 N-1 2017 2018 2019 2020 MVA % MVA % MVA % MVA % Spare Spare Spare Spare Al Ansab 1 P007 - - 20.0 20.0 ------18.9 94.3 1.1 20.1 100.5 -0.1 Ghubrah South 1 P026 - - 40.0 40.0 ------28.8 72.1 11.2 29.0 72.6 11.0 Azaibah South 1-A P014 - - 20.0 20.0 ------18.5 92.7 1.5 20.0 100.1 0.0 Azaibah South 1-B P147 - - 40.0 40.0 ------48.4 121.0 -8.4 35.2 88.0 4.8 Royal Hospital P024 - - 40.0 40.0 ------20.8 52.1 19.2 21.0 52.4 19.0 Mall Of Oman P171 - - 40.0 40.0 ------38.3 95.7 1.7 38.3 95.7 1.7 Primary Substations Bus Voltages 2017 2018 2019 2020 Primary P.No. 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) Al Ansab 1-A P007 - - - - 100.7 103.1 99.8 102.1 Al Ansab 1-B P007 - - - - 100.7 103.1 99.8 102.1 Azaiba South 1A-A P014 - - - - 100.0 102.2 99.1 101.0 Azaiba South 1A-B P014 - - - - 99.9 102.2 99.0 101.0 Azaiba South 1B-A P147 - - - - 100.1 100.3 99.6 101.1 Azaiba South 1B-B P147 - - - - 100.1 100.4 99.6 101.1 Azaiba South 1B-C P147 - - - - 100.1 100.4 99.6 101.1 Ghubrah South 1-A P026 - - - - 100.9 103.4 100.1 102.6 Ghubrah South 1-B P026 - - - - 100.9 103.4 100.1 102.6 Ghubrah South 1-C P026 - - - - 100.9 103.7 100.1 102.8 Mall of Oman-A P171 - - - - 100.5 101.8 99.7 101.0 Mall of Oman-B P171 - - - - 100.6 101.8 99.7 101.0 Mall of Oman-C P171 - - - - 100.5 101.9 99.7 101.0 Royal Hospital-A P024 - - - - 100.9 103.8 100.1 102.9 Royal Hospital-B P024 - - - - 100.9 103.8 100.1 102.9 Royal Hospital-C P024 - - - - 100.9 103.8 100.1 103.0

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

Primary Substation 3-Phase Fault Current Levels 33kV -Rated SC Capacity(kA) 11kV -Rated SC Capacity(kA) 2017 2018 2019 2020 Primary P.No. 2017 2018 2019 2020 2017 2018 2019 2020 33kV 11kV 33kV 11kV 33kV 11kV 33kV 11kV Al Ansab 1-A P007 - - 25.0 25.0 - - 20.0 20.0 - - - - 16.3 14.9 16.2 15.0 Al Ansab 1-B P007 - - 25.0 25.0 - - 20.0 20.0 - - - - 16.1 14.9 16.0 15.0 Azaiba South 1A-A P014 - - 25.0 25.0 - - 25.0 25.0 - - - - 9.1 13.0 9.0 13.1 Azaiba South 1A-B P014 - - 25.0 25.0 - - 25.0 25.0 - - - - 8.6 13.0 8.6 13.1 Azaiba South 1B-A P147 - - 25.0 25.0 - - 25.0 25.0 - - - - 14.0 8.5 14.0 14.8 Azaiba South 1B-B P147 - - 25.0 25.0 - - 25.0 25.0 - - - - 13.9 8.5 14.0 14.8 Azaiba South 1B-C P147 - - 25.0 25.0 - - 25.0 25.0 - - - - 13.9 8.5 13.8 8.1 Ghubrah South 1-A P026 - - 25.0 25.0 - - 18.4 18.4 - - - - 20.8 17.1 20.6 17.1 Ghubrah South 1-B P026 - - 25.0 25.0 - - 18.4 18.4 - - - - 20.8 17.1 20.6 17.1 Ghubrah South 1-C P026 - - 25.0 25.0 - - 18.4 18.4 - - - - 20.8 9.5 20.6 9.5 Mall of Oman-A P171 - - 25.0 25.0 - - 25.0 25.0 - - - - 16.5 15.2 16.4 15.2 Mall of Oman-B P171 - - 25.0 25.0 - - 25.0 25.0 - - - - 16.6 15.2 16.5 15.2 Mall of Oman-C P171 - - 25.0 25.0 - - 25.0 25.0 - - - - 16.6 8.4 16.5 8.4 Royal Hospital-A P024 - - 25.0 25.0 - - 20.0 20.0 - - - - 19.9 14.4 19.8 14.4 Royal Hospital-B P024 - - 25.0 25.0 - - 20.0 20.0 - - - - 19.9 14.4 19.8 14.4 Royal Hospital-C P024 - - 25.0 25.0 - - 20.0 20.0 - - - - 19.9 8.0 19.7 8.0 33kV Feeder Loads Circuit Rating(MVA) 2017 2018 2019 2020 Primary 2017 2018 2019 2020 MVA %Loading MVA %Loading MVA %Loading MVA %Loading Al Ansab 1-A-P007 - - 22.0 22.0 - - - - 9.5 43.2% 10.2 46.2% Al Ansab 1-B-P007 - - 22.0 22.0 - - - - 9.6 43.7% 10.3 46.7% Azaiba South 1A-A-P014 - - 15.4 15.4 - - - - 9.5 61.7% 10.3 67.0% Azaiba South 1A-B-P014 - - 15.4 15.4 - - - - 9.3 60.7% 10.1 65.9% Azaiba South 1B-A-P147 - - 22.0 22.0 - - - - 16.8 76.2% 11.9 54.3% Azaiba South 1B-B-P147 - - 22.0 22.0 - - - - 16.8 76.2% 12.0 54.6% Azaiba South 1B-C-P147 - - 22.0 22.0 - - - - 16.8 76.2% 12.0 54.4% Ghubrah South 1-A-P026 - - 22.0 22.0 - - - - 10.3 46.7% 10.3 47.0% Ghubrah South 1-B-P026 - - 22.0 22.0 - - - - 10.2 46.2% 10.2 46.6% Ghubrah South 1-C-P026 - - 22.0 22.0 - - - - 9.0 40.9% 9.1 41.2% Mall of Oman-B-P171 - - 22.0 22.0 - - - - 13.0 59.2% 13.0 59.2% Mall of Oman-C-P171 - - 22.0 22.0 - - - - 13.2 60.0% 13.2 60.1% Mall of Oman-A-P171 - - 22.0 22.0 - - - - 13.1 59.6% 13.1 59.6% Royal Hospital-A-P024 - - 22.0 22.0 - - - - 7.0 31.6% 7.0 31.9% Royal Hospital-B-P024 - - 22.0 22.0 - - - - 7.1 32.1% 7.1 32.4% Royal Hospital-C-P024 - - 22.0 22.0 - - - - 7.0 31.9% 7.1 32.1%

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

Ghala-A Grid Network Results Primary Substations Peak Demand 2017 2018 2019 2020 Primary Substation P.No. MW MVAr MW MVAr MW MVAr MW MVAr Al Ansab 2 P008 18.5 2.7 19.7 2.9 - - - - ROP Hospital P172 - - - - 20.0 6.6 20.0 6.6 Oman Exhibition P165 4.1 0.9 4.1 0.9 4.1 0.9 4.1 0.9 Ghala 2 P156 30.2 13.8 32.2 10.6 - - - - Ghala 1 P015 - - 23.9 3.9 - - - - Ghala 1(Upgrade) P015 - - - - 36.8 6.1 39.8 6.6 MOD Al Ansab P167 8.7 3.7 8.7 3.7 8.7 3.7 8.7 3.7 Al Ansab STP P009 6.7 2.9 6.7 2.9 6.7 2.9 6.7 2.9 Percentage Loading of Primary Substations Firm Capacity(MVA) Load'2017 Load'2018 Load'2019 Load'2020 Primary P.No. N-1 N-1 N-1 N-1 2017 2018 2019 2020 MVA % MVA % MVA % MVA % Spare Spare Spare Spare Al Ansab 2 P008 20.0 20.0 - - 18.7 93.5 1.3 19.9 99.7 0.1 ------ROP Hospital P172 - - 40.0 40.0 ------21.1 52.6 18.9 21.1 52.6 18.9 Oman Exhibition P165 40.0 40.0 40.0 40.0 4.2 10.5 35.8 4.2 10.5 35.8 4.2 10.5 35.8 4.2 10.5 35.8 Ghala 2 P156 40.0 40.0 - - 33.2 83.0 6.8 33.9 84.7 6.1 ------Ghala 1 P015 - 20.0 - - - - - 24.2 121.0 -4.2 ------Ghala 1(Upgrade) P015 - - 40.0 40.0 ------37.3 93.3 2.7 40.3 100.8 -0.3 MOD Al Ansab P167 10.0 10.0 10.0 10.0 9.5 94.7 0.5 9.5 94.7 0.5 9.5 94.7 0.5 9.5 94.7 0.5 Al Ansab STP P009 20.0 20.0 20.0 20.0 7.3 36.4 12.7 7.3 36.4 12.7 7.3 36.4 12.7 7.3 36.4 12.7 Primary Substations Bus Voltages 2017 2018 2019 2020 Primary P.No. 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) Ansab 2-A P008 100.1 101.6 99.8 101.0 - - - - Ansab 2-B P008 100.1 101.6 99.7 101.0 - - - - Ansab STP-A P008 100.7 104.1 100.4 103.8 101.3 104.8 101.2 104.7 Ansab STP-B P008 100.7 104.1 100.4 103.8 101.3 104.8 101.2 104.7 Ghala 1-A P008 - - 99.8 102.4 100.7 103.3 100.5 102.9 Ghala 1-B P008 - - 99.8 102.4 100.7 103.3 100.5 102.9 Ghala 1-C P008 - - - - 100.7 103.3 100.5 102.9 Ghala 2-A P008 100.0 101.4 99.7 102.1 - - - - Ghala 2-B P008 99.9 100.8 99.7 102.1 - - - - Ghala 2-C P008 99.9 100.8 99.7 102.1 - - - - MOD Al Ansab-A P008 100.4 103.0 100.1 102.9 101.0 103.9 100.9 103.8 MOD Al Ansab-B P008 100.5 103.4 100.1 102.9 101.0 103.9 100.9 103.8 Oman Exhibition-A P008 100.7 105.0 100.4 104.8 101.3 105.7 101.2 105.6 Oman Exhibition-B P008 100.7 105.0 100.4 104.8 101.3 105.7 101.2 105.6 Oman Exhibition-C P008 100.7 105.3 100.4 104.8 101.3 105.7 101.2 105.6 ROP Hospital-A P008 - - - - 101.1 104.7 101.0 104.6 ROP Hospital-B P008 - - - - 101.1 104.7 101.0 104.6 ROP Hospital-C P008 - - - - 101.1 104.7 101.0 104.6

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

Primary Substation 3-Phase Fault Current Levels 33kV -Rated SC Capacity(kA) 11kV -Rated SC Capacity(kA) 2017 2018 2019 2020 Primary P.No. 2017 2018 2019 2020 2017 2018 2019 2020 33kV 11kV 33kV 11kV 33kV 11kV 33kV 11kV Ansab 2-A P008 25.0 25.0 - - 20.0 20.0 - - 13.1 14.0 12.8 14.0 - - - - Ansab 2-B P008 25.0 25.0 - - 20.0 20.0 - - 13.1 14.0 12.8 14.0 - - - - Ansab STP-A P009 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 18.3 13.9 17.6 13.7 17.2 13.7 17.3 13.7 Ansab STP-B P009 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 18.3 13.9 17.6 13.7 17.2 13.7 17.3 13.7 Ghala 1-A P015 - 25.0 25.0 25.0 - 20.0 20.0 20.0 - - 12.8 7.6 12.7 7.9 12.7 8.0 Ghala 1-B P015 - 25.0 25.0 25.0 - 20.0 20.0 20.0 - - 12.9 8.2 12.9 14.4 12.9 14.6 Ghala 1-C P015 - - 25.0 25.0 - - 20.0 20.0 - - - - 12.9 14.4 12.9 14.6 Ghala 2-A P156 25.0 25.0 - - 25.0 25.0 - - 12.2 7.9 12.3 19.7 - - - - Ghala 2-B P156 25.0 25.0 - - 25.0 25.0 - - 12.5 14.5 12.2 19.7 - - - - Ghala 2-C P156 25.0 25.0 - - 25.0 25.0 - - 12.5 14.5 12.3 19.7 - - - - MOD Al Ansab-A P167 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 12.5 11.2 12.2 11.1 12.1 11.0 12.1 11.0 MOD Al Ansab-B P167 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 12.5 11.2 12.2 11.1 12.1 11.0 12.1 11.0 Oman Exhibition-A P165 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 22.7 13.9 21.6 13.6 21.1 13.5 21.2 7.6 Oman Exhibition-B P165 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 22.7 13.9 21.5 13.6 21.1 13.5 21.1 7.6 Oman Exhibition-C P165 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 22.7 7.6 21.6 7.7 21.1 7.7 21.2 7.7 ROP Hospital-A P172 - - 25.0 25.0 - - 25.0 25.0 - - - - 15.2 13.7 15.2 13.7 ROP Hospital-B P172 - - 25.0 25.0 - - 25.0 25.0 - - - - 15.2 13.7 15.2 13.7 ROP Hospital-C P172 - - 25.0 25.0 - - 25.0 25.0 - - - - 15.1 7.6 15.1 7.6 33kV Feeder Loads Circuit Rating(MVA) 2017 2018 2019 2020 Primary 2017 2018 2019 2020 MVA %Loading MVA %Loading MVA %Loading MVA %Loading Ansab 2-A-P008 22.0 22.0 - - 10.1 46.0% 10.8 49.2% - - - - Ansab 2-B-P008 22.0 22.0 - - 10.2 46.2% 10.9 49.5% - - - - Ansab STP-A-P009 22.0 22.0 22.0 22.0 3.7 16.7% 3.7 16.7% 3.7 16.7% 3.7 16.7% Ansab STP-B-P009 22.0 22.0 22.0 22.0 3.7 16.6% 3.7 16.6% 3.7 16.6% 3.7 16.6% Ghala 1-A-P015 - 22.0 22.0 22.0 - - 12.3 55.8% 12.6 57.4% 13.7 62.1% Ghala 1-B-P015 - 22.0 22.0 22.0 - - 12.3 55.9% 12.6 57.5% 13.7 62.3% Ghala 1-C-P015 - - 22.0 22.0 - - - - 12.6 57.5% 13.7 62.2% Ghala 2-A-P156 22.0 22.0 - - 10.4 47.1% 11.2 50.8% - - - - Ghala 2-B-P156 22.0 22.0 - - 11.9 54.1% 11.3 51.4% - - - - Ghala 2-C-P156 22.0 22.0 - - 11.8 53.8% 11.2 51.1% - - - - MOD Al Ansab-A-P167 22.0 22.0 22.0 22.0 5.0 22.9% 4.6 20.9% 4.6 20.9% 4.6 20.9% MOD Al Ansab-B-P167 22.0 22.0 22.0 22.0 4.2 18.9% 4.6 20.9% 4.6 20.9% 4.6 20.9% Oman Exhibition-A-P165 22.0 22.0 22.0 22.0 2.1 9.6% 1.4 6.4% 1.4 6.4% 1.4 6.4% Oman Exhibition-B-P165 22.0 22.0 22.0 22.0 2.1 9.6% 1.4 6.4% 1.4 6.4% 1.4 6.4% Oman Exhibition-C-P165 22.0 22.0 22.0 22.0 0.0 0.1% 1.4 6.4% 1.4 6.4% 1.4 6.4% ROP Hospital-A-P172 - - 22.0 22.0 - - - - 6.8 30.9% 6.8 30.9% ROP Hospital-B-P172 - - 22.0 22.0 - - - - 6.9 31.2% 6.9 31.2% ROP Hospital-C-P172 - - 22.0 22.0 - - - - 6.9 31.2% 6.9 31.2%

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

Ghala-B Grid Network Results Primary Substations Peak Demand 2017 2018 2019 2020 Primary Substation P.No. MW MVAr MW MVAr MW MVAr MW MVAr Ghala 2 P156 - - - - 36.4 12.0 38.8 12.8 Al Ansab 2 P008 - - - - 18.9 2.8 20.1 3.0 Percentage Loading of Primary Substations Firm Capacity(MVA) Load'2017 Load'2018 Load'2019 Load'2020 Primary P.No. N-1 N-1 N-1 N-1 2017 2018 2019 2020 MVA % MVA % MVA % MVA % Spare Spare Spare Spare Ghala 2 P156 - - 40.0 40.0 ------38.4 95.9 1.6 40.9 102.2 -0.9 Al Ansab 2 P008 - - 20.0 20.0 ------19.1 95.5 0.9 20.4 101.8 -0.4 Primary Substations Bus Voltages 2017 2018 2019 2020 Primary P.No. 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) Ghala 2-A P156 - - - - 100.6 102.9 100.3 102.4 Ghala 2-B P156 - - - - 100.5 102.6 100.3 102.1 Ghala 2-C P156 - - - - 100.4 102.1 100.2 101.6 Ansab 2-A P008 - - - - 100.7 102.2 100.1 100.0 Ansab 2-B P008 - - - - 100.7 102.2 100.7 103.3 Primary Substation 3-Phase Fault Current Levels 33kV -Rated SC Capacity(kA) 11kV -Rated SC Capacity(kA) 2017 2018 2019 2020 Primary P.No. 2017 2018 2019 2020 2017 2018 2019 2020 33kV 11kV 33kV 11kV 33kV 11kV 33kV 11kV Ghala 2-A P156 - - 25.0 25.0 - - 25.0 25.0 - - - - 11.7 7.9 11.7 8.0 Ghala 2-B P156 - - 25.0 25.0 - - 25.0 25.0 - - - - 11.9 14.6 12.0 14.8 Ghala 2-C P156 - - 25.0 25.0 - - 25.0 25.0 - - - - 11.9 14.6 12.0 14.8 Ansab 2-A P008 - - 25.0 25.0 - - 20.0 20.0 - - - - 12.1 11.0 12.1 11.0 Ansab 2-B P008 - - 25.0 25.0 - - 20.0 20.0 - - - - 12.1 11.0 12.1 11.0 33kV Feeder Loads Circuit Rating(MVA) 2017 2018 2019 2020 Primary 2017 2018 2019 2020 MVA %Loading MVA %Loading MVA %Loading MVA %Loading Ghala 2-A-P156 - - 22.0 22.0 - - - - 11.7 53.4% 12.6 57.2% Ghala 2-B-P156 - - 22.0 22.0 - - - - 12.7 57.8% 13.6 61.9% Ghala 2-C-P156 - - 22.0 22.0 - - - - 14.0 63.4% 14.9 67.9% Ansab 2-A-P008 - - 22.0 22.0 - - - - 10.3 46.9% 15.6 70.8% Ansab 2-B-P008 - - 22.0 22.0 - - - - 10.4 47.2% 6.8 30.8%

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

Airport Height-A Grid Network Results Primary Substations Peak Demand 2017 2018 2019 2020 Primary Substation P.No. MW MVAr MW MVAr MW MVAr MW MVAr Ghala 1 P015 22.1 3.7 ------Airport Height 2 P002 12.1 3.5 13.6 3.9 18.5 5.4 20.8 6.0 Airport Height 1 P001 23.7 12.7 26.5 8.7 18.5 6.1 20.8 6.8 Azaibah North 3 P013 32.8 11.6 35.4 11.6 - - - - Airport Height 5 P151 4.5 0.0 5.0 0.0 16.8 0.0 18.9 0.0 MOD Technical College P081 7.5 3.2 8.4 2.8 9.5 3.1 10.6 3.5 Airport Height 3 P003 17.2 4.6 19.3 5.1 18.2 4.9 20.4 5.4 Airport Height 4 P004 7.3 3.1 8.2 2.7 9.2 3.0 10.3 3.4 Percentage Loading of Primary Substations Firm Capacity(MVA) Load'2017 Load'2018 Load'2019 Load'2020 Primary P.No. N-1 N-1 N-1 N-1 2017 2018 2019 2020 MVA % MVA % MVA % MVA % Spare Spare Spare Spare Ghala 1 P015 20.0 - - - 22.4 112.0 -2.4 ------Airport Height 2 P002 20.0 20.0 20.0 20.0 12.6 63.0 7.4 14.1 70.6 5.9 19.3 96.5 0.7 21.6 108.1 -1.6 Airport Height 1 P001 20.0 20.0 20.0 20.0 26.9 134.5 -6.9 27.9 139.7 -7.9 19.5 97.5 0.5 21.8 109.2 -1.8 Azaibah North 3 P013 40.0 40.0 - - 34.8 87.0 5.2 37.3 93.2 2.7 ------Airport Height 5 P151 20.0 20.0 20.0 20.0 4.5 22.5 15.5 5.0 25.2 15.0 16.8 84.2 3.2 18.9 94.3 1.1 MOD Technical P081 20.0 20.0 20.0 20.0 8.2 41.0 11.8 8.9 44.4 11.1 10.0 49.8 10.0 11.1 55.7 8.9 College Airport Height 3 P003 20.0 20.0 20.0 20.0 17.8 89.0 2.2 19.9 99.7 0.1 18.9 94.3 1.1 21.1 105.6 -1.1 Airport Height 4 P004 20.0 20.0 20.0 20.0 7.9 39.7 12.1 8.6 43.0 11.4 9.6 48.2 10.4 10.8 54.0 9.2 Primary Substations Bus Voltages 2017 2018 2019 2020 Primary P.No. 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) Airport Height 1-A P001 100.7 100.0 100.3 100.9 100.5 102.7 100.1 101.7 Airport Height 1-B P001 100.8 100.7 100.3 101.5 100.5 102.7 100.1 102.1 Airport Height 2-A P002 101.1 104.3 100.6 103.6 100.6 102.9 100.2 102.1 Airport Height 2-B P002 101.1 104.3 100.6 103.6 100.6 102.9 100.2 102.1 Airport Height 3-A P003 100.9 103.7 100.4 102.9 100.5 103.1 100.0 102.4 Airport Height 3-B P003 100.9 103.7 100.4 102.9 100.5 103.1 100.1 102.4 Airport Height 4-A P004 101.2 104.7 100.8 104.4 100.8 104.3 100.4 103.7 Airport Height 4-B P004 101.2 104.7 100.8 104.4 100.8 104.3 100.4 103.7 Airport Height 5-A P151 101.3 105.8 100.8 105.3 100.6 104.8 100.1 104.2 Airport Height 5-B P151 101.3 105.8 100.8 105.3 100.6 104.8 100.1 104.2 Azaiba North 3-A P013 99.7 99.5 99.7 101.1 - - - - Azaiba North 3-B P013 100.6 103.3 99.7 101.1 - - - - Azaiba North 3-C P013 100.3 102.1 99.7 101.1 - - - - Ghala 1-A P015 100.4 103.6 ------Ghala 1-B P015 99.7 102.0 ------MOD Technical P081 101.3 104.7 100.8 104.4 100.9 104.3 100.5 103.7 College-A MOD Technical P081 101.3 104.7 100.8 104.4 100.9 104.3 100.5 103.7 College-B

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

Primary Substation 3-Phase Fault Current Levels 33kV -Rated SC Capacity(kA) 11kV -Rated SC Capacity(kA) 2017 2018 2019 2020 Primary P.No. 2017 2018 2019 2020 2017 2018 2019 2020 33kV 11kV 33kV 11kV 33kV 11kV 33kV 11kV Airport Height 1-A P001 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 16.2 8.2 15.2 8.2 14.9 13.9 14.9 7.9 Airport Height 1-B P001 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 16.2 8.1 15.2 8.0 14.9 13.9 15.0 7.8 Airport Height 2-A P002 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 17.0 13.5 15.8 13.4 15.5 13.7 15.7 13.9 Airport Height 2-B P002 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 16.9 13.5 15.8 13.4 15.5 13.7 15.6 13.9 Airport Height 3-A P003 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 15.4 14.4 14.5 14.3 14.2 14.1 14.4 14.3 Airport Height 3-B P003 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 15.3 14.4 14.4 14.3 14.2 14.1 14.3 14.3 Airport Height 4-A P004 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 18.7 13.7 17.3 13.5 16.9 13.4 17.1 13.6 Airport Height 4-B P004 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 18.6 13.7 17.2 13.5 16.8 13.4 17.0 13.6 Airport Height 5-A P151 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 14.2 12.5 13.5 12.3 13.3 13.2 13.4 13.4 Airport Height 5-B P151 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 14.2 12.5 13.4 12.3 13.3 13.2 13.4 13.4 Azaiba North 3-A P013 25.0 25.0 - - 20.0 20.0 - - 11.1 7.9 11.0 19.0 - - - - Azaiba North 3-B P013 25.0 25.0 - - 20.0 20.0 - - 10.9 7.3 11.0 19.0 - - - - Azaiba North 3-C P013 25.0 25.0 - - 20.0 20.0 - - 11.0 7.6 11.0 19.0 - - - - Ghala 1-A P015 25.0 - - - 20.0 - - - 8.3 6.8 ------Ghala 1-B P015 25.0 - - - 20.0 - - - 8.7 7.2 ------MOD Technical P081 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 21.0 13.8 19.3 13.6 18.8 13.6 19.0 13.7 College-A MOD Technical P081 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 21.2 13.8 19.4 13.6 18.9 13.6 19.1 13.7 College-B

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

33kV Feeder Loads Circuit Rating(MVA) 2017 2018 2019 2020 Primary 2017 2018 2019 2020 MVA %Loading MVA %Loading MVA %Loading MVA %Loading Airport Height 1-A-P001 22.0 22.0 22.0 22.0 14.9 67.5% 15.3 69.5% 9.9 45.0% 11.8 53.7% Airport Height 1-B-P001 22.0 22.0 22.0 22.0 13.2 59.9% 13.6 61.8% 9.9 45.1% 10.5 47.8% Airport Height 2-A-P002 22.0 22.0 22.0 22.0 6.4 28.9% 7.2 32.5% 9.9 44.9% 11.1 50.5% Airport Height 2-B-P002 22.0 22.0 22.0 22.0 6.3 28.4% 7.0 31.9% 9.7 44.1% 10.9 49.6% Airport Height 3-A-P003 22.0 22.0 22.0 22.0 9.1 41.4% 10.2 46.5% 9.7 43.9% 10.9 49.4% Airport Height 3-B-P003 22.0 22.0 22.0 22.0 8.9 40.6% 10.0 45.6% 9.5 43.1% 10.7 48.4% Airport Height 4-A-P004 22.0 22.0 22.0 22.0 4.0 18.2% 4.4 19.8% 4.9 22.3% 5.5 25.0% Airport Height 4-B-P004 22.0 22.0 22.0 22.0 3.9 17.6% 4.2 19.2% 4.7 21.5% 5.3 24.2% Airport Height 5-A-P151 22.0 22.0 22.0 22.0 2.3 10.5% 2.6 11.7% 8.5 38.7% 9.5 43.3% Airport Height 5-B-P151 22.0 22.0 22.0 22.0 2.3 10.5% 2.6 11.7% 8.5 38.5% 9.5 43.1% Azaiba North 3-A-P013 22.0 22.0 - - 17.3 78.5% 12.6 57.3% - - - - Azaiba North 3-B-P013 22.0 22.0 - - 7.7 35.1% 12.9 58.8% - - - - Azaiba North 3-C-P013 22.0 22.0 - - 11.0 50.1% 12.9 58.9% - - - - Ghala 1-A-P015 15.4 - - - 8.7 56.2% ------Ghala 1-B-P015 15.4 - - - 14.1 91.6% ------MOD Technical College-A-P081 22.0 22.0 22.0 22.0 4.1 18.7% 4.5 20.2% 5.0 22.7% 5.6 25.5%

MOD Technical College-B-P081 22.0 22.0 22.0 22.0 4.1 18.8% 4.5 20.4% 5.0 22.8% 5.6 25.6%

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

Airport Height-B Grid Network Results Primary Substations Peak Demand 2017 2018 2019 2020 Primary Substation P.No. MW MVAr MW MVAr MW MVAr MW MVAr Azaibah North 3 P013 - - - - 38.3 12.6 41.3 13.6 Percentage Loading of Primary Substations Firm Capacity(MVA) Load'2017 Load'2018 Load'2019 Load'2020 Primary P.No. N-1 N-1 N-1 N-1 2017 2018 2019 2020 MVA % MVA % MVA % MVA % Spare Spare Spare Spare Azaibah North 3 P013 - - 40.0 40.0 ------40.3 100.7 -0.3 43.5 108.7 -3.5 Primary Substations Bus Voltages 2017 2018 2019 2020 Primary P.No. 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) Azaiba North 3-A P013 - - - - 100.6 101.7 98.7 99.3 Azaiba North 3-B P013 - - - - 100.6 101.7 98.7 99.5 Azaiba North 3-C P013 - - - - 100.6 101.7 98.7 99.5 Primary Substation 3-Phase Fault Current Levels 33kV -Rated SC Capacity(kA) 11kV -Rated SC Capacity(kA) 2017 2018 2019 2020 Primary P.No. 2017 2018 2019 2020 2017 2018 2019 2020 33kV 11kV 33kV 11kV 33kV 11kV 33kV 11kV Azaiba North 3-A P013 - - 25.0 25.0 - - 20.0 20.0 - - - - 10.5 18.7 10.2 7.6 Azaiba North 3-B P013 - - 25.0 25.0 - - 20.0 20.0 - - - - 10.5 18.7 10.1 7.7 Azaiba North 3-C P013 - - 25.0 25.0 - - 20.0 20.0 - - - - 10.5 18.7 10.2 7.7 33kV Feeder Loads Circuit Rating(MVA) 2017 2018 2019 2020 Primary 2017 2018 2019 2020 MVA %Loading MVA %Loading MVA %Loading MVA %Loading Azaiba North 3-A-P013 - - 22.0 22.0 - - - - 13.6 62.0% 15.1 68.5% Azaiba North 3-B-P013 - - 22.0 22.0 - - - - 14.0 63.6% 15.1 68.4% Azaiba North 3-C-P013 - - 22.0 22.0 - - - - 14.0 63.7% 15.1 68.4%

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

Rusail-A Grid Network Results Primary Substations Peak Demand 2017 2018 2019 2020 Primary Substation P.No. MW MVAr MW MVAr MW MVAr MW MVAr SQU 1 P122 21.2 13.1 21.2 13.1 21.2 13.1 - - SQU 2 P123 13.3 9.8 13.3 9.8 13.3 9.8 13.3 9.8 Rusail Industrial 1 P103 12.0 5.2 12.9 4.2 13.8 4.5 14.7 4.8 Rusail Industrial 2 P104 17.3 7.4 18.5 6.1 16.6 5.4 17.7 5.8 Rusail Industrial 3 P105 13.4 5.8 ------Rusail Housing P056 14.5 4.6 ------Rusail Private Factory P106 22.2 9.9 ------ROP Al Khoud P161 - - 13.3 4.4 13.3 4.4 13.3 4.4 Rusail08(KOM) P164 - - 14.0 4.6 24.6 8.1 26.3 8.6 Water Department P102 0.5 0.2 0.5 0.2 0.5 0.2 0.5 0.2 Al Jifnain P042 3.1 1.3 3.1 1.3 3.1 1.3 3.1 1.3 Cement Housing P088 2.1 0.9 2.1 0.9 2.1 0.9 2.1 0.9 Al Misfah OCP 2 P176 0.5 0.2 0.5 0.2 0.5 0.2 0.5 0.2 Al Misfah OCP 1 P078 0.5 0.2 0.5 0.2 0.5 0.2 0.5 0.2 Percentage Loading of Primary Substations Firm Capacity(MVA) Load'2017 Load'2018 Load'2019 Load'2020 Primary P.No. N-1 N-1 N-1 N-1 2017 2018 2019 2020 MVA % MVA % MVA % MVA % Spare Spare Spare Spare SQU 1 P122 32.0 32.0 32.0 - 24.9 77.8 7.1 24.9 77.8 7.1 24.9 77.8 7.1 - - - SQU 2 P123 16.0 16.0 16.0 16.0 16.5 103.1 -0.5 16.5 103.1 -0.5 16.5 103.1 -0.5 16.5 103.1 -0.5 Rusail Industrial 1 P103 16.0 16.0 16.0 16.0 13.1 81.9 2.9 13.6 84.7 2.4 14.5 90.6 1.5 15.5 96.9 0.5 Rusail Industrial 2 P104 20.0 20.0 20.0 20.0 18.8 94.0 1.2 19.5 97.3 0.5 17.4 87.1 2.6 18.6 93.2 1.4 Rusail Industrial 3 P105 20.0 - - - 14.6 73.0 5.4 ------Rusail Housing P056 20.0 - - - 15.2 76.0 4.8 ------Rusail Private Factory P106 20.0 - - - 24.3 121.5 -4.3 ------ROP Al Khoud P161 - 20.0 20.0 20.0 - - - 14.0 70.0 6.0 14.0 70.0 6.0 14.0 70.0 6.0 Rusail08(KOM) P164 - 40.0 40.0 40.0 - - - 14.7 36.8 25.3 25.9 64.7 14.1 27.7 69.2 12.3 Water Department P102 1TX 1TX 1TX 1TX 0.5 - - 0.5 - - 0.5 - - 0.5 - - Al Jifnain P042 1TX 1TX 1TX 1TX 3.3 - - 3.3 - - 3.3 - - 3.3 - - Cement Housing P088 5.0 5.0 5.0 5.0 2.3 46.0 2.7 2.3 46.0 2.7 2.3 46.0 2.7 2.3 46.0 2.7 Al Misfah OCP 2 P176 1.0 1.0 1.0 1.0 0.5 50.0 0.5 0.5 50.0 0.5 0.5 50.0 0.5 0.5 50.0 0.5 Al Misfah OCP 1 P078 1TX 1TX 1TX 1TX 0.5 - - 0.5 - - 0.5 - - 0.5 - -

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

Primary Substations Bus Voltages 2017 2018 2019 2020 Primary P.No. 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) Al Jifnain-A P042 99.2 101.9 100.4 103.2 100.0 102.8 99.8 102.5 Al Misfah OCP 1-A P078 99.4 - 100.7 - 100.3 - 100.1 - Al Misfah OCP 2-A P176 99.4 - 100.7 - 100.3 - 100.1 - Al Misfah OCP 2-B P176 ------Cement Housing-A P088 99.3 98.6 100.6 99.9 100.2 99.5 100.0 99.2 Cement Housing-B P088 99.5 98.6 100.8 99.9 100.4 99.5 100.1 99.2 ROP Al Khoudh-A P161 - - 100.5 103.4 100.2 103.0 99.9 102.7 ROP Al Khoudh-B P161 - - 100.5 103.4 100.2 103.0 99.9 102.7 Rusail 08-A P164 - - 100.8 104.2 100.2 102.6 99.9 102.1 Rusail 08-B P164 - - 100.8 104.2 100.2 102.6 99.9 102.1 Rusail 08-C P164 - - 100.8 104.2 100.2 102.6 99.9 102.1 Rusail Industrial 1-A P103 99.7 97.8 101.0 99.4 100.6 98.9 100.3 98.5 Rusail Industrial 1-B P103 99.7 97.8 101.0 99.4 100.6 98.9 100.3 98.5 Rusail Industrial 2-A P104 99.5 101.2 100.8 103.0 100.5 102.9 100.2 102.4 Rusail Industrial 2-B P104 99.5 101.2 100.8 103.0 100.5 102.9 100.2 102.4 Rusail Industrial 3-A P105 99.5 101.9 ------Rusail Industrial 3-B P105 99.5 101.9 ------Rusail Private Factory-A P106 99.6 99.3 ------Rusail Private Factory-B P106 99.7 101.0 ------Rusail Housing-A P056 99.4 102.2 ------Rusail Housing-B P056 99.4 102.2 ------SQU 1-A P122 99.3 100.3 100.6 101.6 100.2 101.2 - - SQU 1-B P122 99.3 100.3 100.6 101.6 100.2 101.2 - - SQU 1-C P122 99.3 100.4 100.6 101.8 100.2 101.3 - - SQU 2-A P123 99.1 99.7 100.4 101.1 100.0 100.7 99.7 100.4 SQU 2-B P123 99.1 99.7 100.4 101.1 100.0 100.7 99.7 100.4 Water Department-A P102 99.6 - 100.9 - 100.5 - 100.2 -

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

Primary Substation 3-Phase Fault Current Levels 33kV -Rated SC Capacity(kA) 11kV -Rated SC Capacity(kA) 2017 2018 2019 2020 Primary P.No. 2017 2018 2019 2020 2017 2018 2019 2020 33kV 11kV 33kV 11kV 33kV 11kV 33kV 11kV Al Jifnain-A P042 25.0 25.0 25.0 25.0 12.5 12.5 12.5 12.5 6.6 4.1 6.6 4.1 6.6 4.1 6.6 4.1 Al Misfah OCP 1-A P078 25.0 25.0 25.0 25.0 12.5 12.5 12.5 12.5 3.1 - 3.1 - 3.1 - 3.1 - Al Misfah OCP 2-A P176 25.0 25.0 25.0 25.0 12.5 12.5 12.5 12.5 3.1 - 3.1 - 3.1 - 3.1 - Al Misfah OCP 2-B P176 - - - - 12.5 12.5 12.5 12.5 ------Cement Housing-A P088 25.0 25.0 25.0 25.0 12.5 12.5 12.5 12.5 5.1 5.9 5.0 5.9 5.0 5.9 5.0 5.9 Cement Housing-B P088 25.0 25.0 25.0 25.0 12.5 12.5 12.5 12.5 5.1 5.9 5.1 5.9 5.1 5.9 5.1 5.9 ROP Al Khoudh-A P161 - 25.0 25.0 25.0 - 25.0 25.0 25.0 - - 12.9 13.3 12.9 13.3 12.8 13.2 ROP Al Khoudh-B P161 - 25.0 25.0 25.0 - 25.0 25.0 25.0 - - 12.9 13.3 12.9 13.3 12.8 13.2 Rusail 08-A P164 - 25.0 25.0 25.0 - 25.0 25.0 25.0 - - 15.2 13.3 15.3 13.9 15.1 13.9 Rusail 08-B P164 - 25.0 25.0 25.0 - 25.0 25.0 25.0 - - 15.2 13.3 15.3 13.9 15.1 13.9 Rusail 08-C P164 - 25.0 25.0 25.0 - 25.0 25.0 25.0 - - 15.0 7.3 15.1 7.6 14.9 7.7 Rusail Industrial 1-A P103 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 23.6 15.6 23.1 15.6 23.1 15.7 22.6 15.7 Rusail Industrial 1-B P103 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 23.6 15.6 23.1 15.6 23.2 15.7 22.6 15.7 Rusail Industrial 2-A P104 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 20.0 14.6 19.7 14.6 19.7 14.4 19.4 14.5 Rusail Industrial 2-B P104 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 20.0 14.6 19.7 14.6 19.7 14.4 19.4 14.5 Rusail Industrial 3-A P105 25.0 - - - 25.0 - - - 18.4 14.3 ------Rusail Industrial 3-B P105 25.0 - - - 25.0 - - - 18.4 14.3 ------Rusail Private Factory-A P106 25.0 - - - 20.0 - - - 22.9 8.4 ------Rusail Private Factory-B P106 25.0 - - - 20.0 - - - 22.9 8.1 ------Rusail Housing-A P056 25.0 - - - 20.0 - - - 16.5 14.3 ------Rusail Housing-B P056 25.0 - - - 20.0 - - - 16.5 14.3 ------SQU 1-A P122 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 15.4 13.3 15.2 13.3 15.2 13.3 - - SQU 1-B P122 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 15.4 13.3 15.2 13.3 15.2 13.3 - - SQU 1-C P122 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 15.2 7.2 15.0 7.2 15.0 7.2 - - SQU 2-A P123 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 13.2 13.0 13.0 12.9 13.0 12.9 12.9 12.9 SQU 2-B P123 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 13.2 13.0 13.0 12.9 13.0 12.9 12.9 12.9 Water Department-A P102 25.0 25.0 25.0 25.0 14.5 - 14.3 - 14.3 - 14.2 -

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

33kV Feeder Loads Circuit Rating(MVA) 2017 2018 2019 2020 Primary 2017 2018 2019 2020 MVA %Loading MVA %Loading MVA %Loading MVA %Loading Al Misfah OCP 1&2 22.0 22.0 22.0 22.0 1.0 4.4% 1.0 4.4% 1.0 4.4% 1.0 4.4% Cement Housing-A-P088 22.0 22.0 22.0 22.0 4.9 22.1% 4.9 22.1% 4.9 22.1% 4.9 22.1% Cement Housing-B-P088 22.0 22.0 22.0 22.0 1.2 5.5% 1.2 5.5% 1.2 5.5% 1.2 5.5% ROP Al Khoudh-A-P161 - 22.0 22.0 22.0 - - 7.1 32.4% 7.1 32.4% 7.1 32.4% ROP Al Khoudh-B-P161 - 22.0 22.0 22.0 - - 7.1 32.4% 7.1 32.4% 7.1 32.4% Rusail 08-A-P164 - 22.0 22.0 22.0 - - 5.0 22.6% 8.8 40.1% 9.5 43.0% Rusail 08-B-P164 - 22.0 22.0 22.0 - - 5.0 22.6% 8.8 40.1% 9.5 43.0% Rusail 08-C-P164 - 22.0 22.0 22.0 - - 5.0 22.6% 8.8 40.1% 9.5 43.0% Rusail Industrial 1-A-P103 22.0 22.0 22.0 22.0 6.8 30.9% 7.0 31.8% 7.5 34.1% 8.0 36.5% Rusail Industrial 1-B-P103 22.0 22.0 22.0 22.0 6.6 29.8% 6.8 30.8% 7.3 33.0% 7.8 35.3% Rusail Industrial 2-A-P104 22.0 22.0 22.0 22.0 9.7 43.9% 9.9 45.2% 8.9 40.4% 9.5 43.3% Rusail Industrial 2-B-P104 22.0 22.0 22.0 22.0 9.7 43.9% 9.9 45.2% 8.9 40.4% 9.5 43.3% Rusail Industrial 3-A-P105 22.0 - - - 7.6 34.4% ------Rusail Industrial 3-B-P105 22.0 - - - 7.4 33.5% ------Rusail Private Factory-A-P106 22.0 - - - 15.1 68.5% ------Rusail Private Factory-B-P106 22.0 - - - 10.2 46.4% ------RusailHousing-A-P056 22.0 - - - 7.7 35.0% ------RusailHousing-B-P056 22.0 - - - 7.8 35.5% ------SQU 1-A-P122 22.0 22.0 22.0 - 8.7 39.5% 8.7 39.5% 8.7 39.5% - - SQU 1-B-P122 22.0 22.0 22.0 - 8.7 39.5% 8.7 39.5% 8.7 39.5% - - SQU 1-C-P122 22.0 22.0 22.0 - 8.5 38.4% 8.4 38.4% 8.5 38.4% - - SQU 2-A-P123 22.0 22.0 22.0 22.0 8.6 38.9% 8.6 38.9% 8.6 38.9% 8.6 38.9% SQU 2-B-P123 22.0 22.0 22.0 22.0 8.6 38.9% 8.6 38.9% 8.6 38.9% 8.6 38.9%

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

Rusail-B Grid Network Results Primary Substations Peak Demand 2017 2018 2019 2020 Primary Substation P.No. MW MVAr MW MVAr MW MVAr MW MVAr Rusail Industrial 3 P105 - - 14.4 4.7 15.3 5.0 16.4 5.4 Rusail Housing P056 - - 15.5 4.9 16.6 5.2 17.7 5.6 Rusail Private Factory P106 - - 23.7 7.8 19.0 6.2 20.3 6.7 Rusail Industrial 4 P158 27.5 11.8 29.5 9.7 31.5 10.4 33.7 11.1 SQU 3 P160 1.4 0.6 1.4 0.5 1.4 0.5 1.4 0.5 Percentage Loading of Primary Substations Firm Capacity(MVA) Load'2017 Load'2018 Load'2019 Load'2020 Primary P.No. N-1 N-1 N-1 N-1 2017 2018 2019 2020 MVA % MVA % MVA % MVA % Spare Spare Spare Spare Rusail Industrial 3 P105 - 20.0 20.0 20.0 - - - 15.1 75.5 4.9 16.2 80.8 3.8 17.3 86.4 2.7 Rusail Housing P056 - 20.0 20.0 20.0 - - - 16.3 81.3 3.7 17.4 86.9 2.6 18.6 93.0 1.4 Rusail Private Factory P106 - 20.0 20.0 20.0 - - - 25.0 125.0 -5.0 20.0 99.9 0.0 21.4 106.8 -1.4 Rusail Industrial 4 P158 40.0 40.0 40.0 40.0 30.0 74.9 10.0 31.0 77.5 9.0 33.2 82.9 6.8 35.5 88.7 4.5 SQU 3 P160 40.0 40.0 40.0 40.0 1.5 3.8 38.5 1.5 3.7 38.5 1.5 3.7 38.5 1.5 3.7 38.5 Primary Substations Bus Voltages 2017 2018 2019 2020 Primary P.No. 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) Rusail Ind 4-A P158 100.2 101.7 101.0 102.9 101.0 102.8 100.8 102.3 Rusail Ind 4-B P158 100.2 101.7 101.0 102.9 101.0 102.8 100.8 102.3 Rusail Ind 4-C P158 100.2 102.0 101.0 103.2 101.0 103.1 100.8 102.7 Rusail Industrial 3-A P105 - - 100.8 103.5 100.8 103.4 100.5 103.0 Rusail Industrial 3-B P105 - - 100.8 103.5 100.8 103.4 100.6 103.0 Rusail Private Factory-A P106 - - 100.9 101.5 101.0 103.0 100.7 102.0

Rusail Private Factory-B P106 - - 100.9 102.9 101.0 103.0 100.7 103.1 Rusail05(Housing)-A P056 - - 100.7 103.4 100.7 103.2 100.4 102.8 Rusail05(Housing)-B P056 - - 100.7 103.4 100.7 103.2 100.4 102.8 SQU 03-A- P160 100.2 104.6 101.0 105.5 101.0 105.5 100.8 105.3 SQU 03-B P160 100.2 104.6 101.0 105.5 101.0 105.5 100.8 105.3 SQU 03-C P160 100.2 104.7 101.0 105.5 101.0 105.5 100.8 105.3 Primary Substation 3-Phase Fault Current Levels 33kV -Rated SC Capacity(kA) 11kV -Rated SC Capacity(kA) 2017 2018 2019 2020 Primary P.No. 2017 2018 2019 2020 2017 2018 2019 2020 33kV 11kV 33kV 11kV 33kV 11kV 33kV 11kV Rusail Ind 4-A P158 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 22.4 14.9 24.0 15.1 23.8 15.2 23.9 15.4 Rusail Ind 4-B P158 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 22.4 14.9 24.0 15.1 23.8 15.2 23.9 15.4 Rusail Ind 4-C P158 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 22.4 8.3 24.0 8.4 23.8 8.5 24.0 8.5 Rusail Industrial 3-A P105 - 25.0 25.0 25.0 - 25.0 25.0 25.0 - - 18.0 14.2 17.9 14.3 18.0 14.4 Rusail Industrial 3-B P105 - 25.0 25.0 25.0 - 25.0 25.0 25.0 - - 18.0 14.2 17.9 14.3 18.0 14.4 Rusail Private Factory-A P106 - 25.0 25.0 25.0 - 20.0 20.0 20.0 - - 22.3 8.4 22.1 14.6 22.2 8.3

Rusail Private Factory-B P106 - 25.0 25.0 25.0 - 20.0 20.0 20.0 - - 22.3 8.1 22.1 14.6 22.2 8.0 Rusail05(Housing)-A P056 - 25.0 25.0 25.0 - 20.0 20.0 20.0 - - 16.2 14.3 16.1 14.3 16.2 14.4 Rusail05(Housing)-B P056 - 25.0 25.0 25.0 - 20.0 20.0 20.0 - - 16.2 14.3 16.1 14.3 16.2 14.4 SQU 03-A- P160 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 12.5 12.5 13.0 12.7 12.9 12.7 13.0 12.7 SQU 03-B P160 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 12.5 12.5 13.0 12.7 12.9 12.7 13.0 12.7 SQU 03-C P160 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 12.3 7.1 12.7 7.2 12.6 7.2 12.7 7.2

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

33kV Feeder Loads Circuit Rating(MVA) 2017 2018 2019 2020 Primary 2017 2018 2019 2020 MVA %Loading MVA %Loading MVA %Loading MVA %Loading Rusail Ind 4-F1-P158 22.0 22.0 22.0 22.0 10.7 48.5% 11.0 49.9% 11.8 53.5% 12.6 57.3% Rusail Ind 4-F2-P158 22.0 22.0 22.0 22.0 10.5 47.9% 10.9 49.4% 11.6 52.9% 12.5 56.7% Rusail Ind 4-F3-P158 22.0 22.0 22.0 22.0 9.7 44.0% 10.0 45.3% 10.7 48.6% 11.4 52.0% Rusail Industrial 3-F1-P105 - 22.0 22.0 22.0 - - 7.8 35.5% 8.4 38.0% 9.0 40.7% Rusail Industrial 3-F2-P105 - 22.0 22.0 22.0 - - 7.6 34.5% 8.1 36.9% 8.7 39.6% Rusail Private Factory-F1-P106 - 22.0 22.0 22.0 - - 15.4 69.9% 10.2 46.4% 13.1 59.4%

Rusail Private Factory-F2-P106 - 22.0 22.0 22.0 - - 10.4 47.4% 10.3 46.6% 8.9 40.4% Rusail05(Housing)-F1-P056 - 22.0 22.0 22.0 - - 8.2 37.4% 8.8 40.1% 9.4 42.9% Rusail05(Housing)-F2-P056 - 22.0 22.0 22.0 - - 8.4 38.0% 9.0 40.7% 9.6 43.6% SQU 03-F1-P160-Pvt 22.0 22.0 22.0 22.0 0.5 2.3% 0.5 2.3% 0.5 2.3% 0.5 2.3% SQU 03-F2-P160-Pvt 22.0 22.0 22.0 22.0 0.5 2.5% 0.5 2.4% 0.5 2.4% 0.5 2.4% SQU 03-F3-P160-Pvt 22.0 22.0 22.0 22.0 0.5 2.4% 0.5 2.3% 0.5 2.3% 0.5 2.3%

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

Misfah Grid Network Results Primary Substations Peak Demand 2017 2018 2019 2020 Primary Substation P.No. MW MVAr MW MVAr MW MVAr MW MVAr Al Misfah P080 31.3 9.5 33.4 10.1 35.6 10.8 37.9 11.5 Al Awabi P139 9.2 4.0 9.2 4.0 - - - - Al Awabi(upgrade) P139 - - - - 14.2 4.7 14.2 4.7 Orpic P192 0.6 0.2 0.6 0.2 0.6 0.2 0.6 0.2 Cement Factory 1 P079 60.6 26.0 60.6 26.0 60.6 26.0 60.6 26.0 Percentage Loading of Primary Substations Firm Capacity(MVA) Load'2017 Load'2018 Load'2019 Load'2020 Primary P.No. N-1 N-1 N-1 N-1 2017 2018 2019 2020 MVA % MVA % MVA % MVA % Spare Spare Spare Spare Al Misfah P080 40.0 40.0 40.0 40.0 32.7 81.8 7.3 34.9 87.1 5.1 37.2 92.9 2.8 39.6 99.0 0.4 Al Awabi P139 12.0 12.0 - - 10.1 83.8 1.9 10.1 83.8 1.9 ------Al Awabi(upgrade) P139 - - 40.0 40.0 ------15.0 37.5 25.0 15.0 37.5 25.0 Orpic P192 6.0 6.0 6.0 6.0 0.6 10.5 5.4 0.6 10.5 5.4 0.6 10.5 5.4 0.6 10.5 5.4 Cement Factory 1 P079 91.5 91.5 91.5 91.5 65.9 72.0 25.6 65.9 72.0 25.6 65.9 72.0 25.6 65.9 72.0 25.6 Primary Substations Bus Voltages 2017 2018 2019 2020 Primary P.No. 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) Al Awabi-A P139 100.3 103.3 100.2 103.2 100.4 104.4 100.3 104.3 Al Awabi-B P139 - 103.3 - 103.2 100.4 104.4 100.3 104.3 Al Awabi-C P139 - 103.3 - 103.2 100.4 104.4 100.3 104.3 Al Misfah-A P080 100.6 103.0 100.5 102.7 100.4 102.4 100.2 102.1 Al Misfah-B P080 100.6 103.0 100.5 102.7 100.4 102.4 100.2 102.1 Al Misfah-C P080 100.4 101.4 100.3 101.0 100.2 100.6 100.0 100.1 Cement Factory 1-A P079 100.0 - 99.9 - 99.9 - 99.8 - Cement Factory 1-B P079 100.0 - 99.9 - 99.9 - 99.8 - Cement Factory 1-C P079 100.0 - 99.9 - 99.8 - 99.7 - Cement Factory 1-D P079 100.0 - 99.9 - 99.8 - 99.7 - Cement Factory 1-E P079 100.0 - 99.9 - 99.8 - 99.7 - Orpic-A P192 100.8 105.3 100.8 105.2 100.7 105.1 100.6 105.0 Orpic-B P192 100.8 105.3 100.8 105.2 100.7 105.1 100.6 105.0 Primary Substation 3-Phase Fault Current Levels 33kV -Rated SC Capacity(kA) 11kV -Rated SC Capacity(kA) 2017 2018 2019 2020 Primary P.No. 2017 2018 2019 2020 2017 2018 2019 2020 33kV 11kV 33kV 11kV 33kV 11kV 33kV 11kV Al Awabi-A P139 25.0 25.0 25.0 25.0 16.0 16.0 25.0 25.0 13.2 5.2 13.2 5.2 13.1 12.7 13.1 12.7 Al Awabi-B P139 - - 25.0 25.0 16.0 16.0 25.0 25.0 - 5.2 - 5.2 12.5 12.5 12.5 12.5 Al Awabi-C P139 - - 25.0 25.0 16.0 16.0 25.0 25.0 - 5.2 - 5.2 12.5 12.5 12.5 12.5 Al Misfah-A P080 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 16.5 14.3 16.5 14.5 16.6 14.6 16.7 14.7 Al Misfah-B P080 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 16.5 14.3 16.5 14.5 16.6 14.6 16.6 14.7 Al Misfah-C P080 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 16.4 8.4 16.5 8.5 16.6 8.6 16.6 8.7 Cement Factory 1-A P079 25.0 25.0 25.0 25.0 - - - - 12.3 - 12.3 - 12.4 - 12.4 - Cement Factory 1-B P079 25.0 25.0 25.0 25.0 - - - - 12.3 - 12.3 - 12.4 - 12.4 - Cement Factory 1-C P079 25.0 25.0 25.0 25.0 - - - - 12.3 - 12.3 - 12.3 - 12.4 - Cement Factory 1-D P079 25.0 25.0 25.0 25.0 - - - - 12.3 - 12.3 - 12.3 - 12.4 - Cement Factory 1-E P079 25.0 25.0 25.0 25.0 - - - - 12.3 - 12.3 - 12.3 - 12.4 - Orpic-A P192 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 12.9 4.9 13.0 4.9 13.0 4.9 13.0 4.9 Orpic-B P192 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 12.9 4.9 13.0 4.9 13.0 4.9 13.0 4.9

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

33kV Feeder Loads Circuit Rating(MVA) 2017 2018 2019 2020 Primary 2017 2018 2019 2020 MVA %Loading MVA %Loading MVA %Loading MVA %Loading Al Awabi-A-P139 22.0 22.0 22.0 22.0 10.1 45.7% 10.1 45.7% 4.9 22.2% 4.9 22.2% Al Awabi-B-P139 - - 22.0 22.0 - - - - 4.9 22.2% 4.9 22.2% Al Awabi-C-P139 - - 22.0 22.0 - - - - 4.9 22.2% 4.9 22.2% Al Misfah-A-P080 22.0 22.0 22.0 22.0 9.4 42.6% 10.0 45.5% 10.7 48.7% 11.4 52.0% Al Misfah-B-P080 22.0 22.0 22.0 22.0 9.3 42.4% 10.0 45.3% 10.6 48.4% 11.4 51.7% Al Misfah-C-P080 22.0 22.0 22.0 22.0 14.7 67.0% 15.8 71.7% 16.9 76.7% 18.1 82.1% Cement Factory 1-A-P079 15.4 15.4 15.4 15.4 13.7 88.7% 13.7 88.7% 13.7 88.7% 13.7 88.7% Cement Factory 1-B-P079 15.4 15.4 15.4 15.4 13.7 88.7% 13.7 88.7% 13.7 88.7% 13.7 88.7% Cement Factory 1-C-P079 15.4 15.4 15.4 15.4 13.8 89.6% 13.8 89.6% 13.8 89.6% 13.8 89.6% Cement Factory 1-D-P079 15.4 15.4 15.4 15.4 13.8 89.6% 13.8 89.6% 13.8 89.6% 13.8 89.6% Cement Factory 1-E-P079 15.4 15.4 15.4 15.4 13.8 89.6% 13.8 89.6% 13.8 89.6% 13.8 89.6% Orpic-A-P192-OD 22.0 22.0 22.0 22.0 0.3 1.5% 0.3 1.5% 0.3 1.5% 0.3 1.5% Orpic-B-P192-OD 22.0 22.0 22.0 22.0 0.4 1.8% 0.4 1.8% 0.4 1.8% 0.4 1.8%

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

Barka Main Grid Network Results Primary Substations Peak Demand 2017 2018 2019 2020 Primary Substation P.No. MW MVAr MW MVAr MW MVAr MW MVAr Manomah P067 16.8 7.0 16.8 5.5 16.8 5.5 - - Mabelah South P061 27.8 11.9 30.8 10.1 34.0 11.2 - - Palace P033 0.5 0.2 0.5 0.2 0.5 0.2 - - Communication RGO Halban Camp P034 1.0 0.4 1.0 0.4 1.0 0.4 - - Percentage Loading of Primary Substations Firm Capacity(MVA) Load'2017 Load'2018 Load'2019 Load'2020 Primary P.No. N-1 N-1 N-1 N-1 2017 2018 2019 2020 MVA % MVA % MVA % MVA % Spare Spare Spare Spare Manomah P067 20.0 20.0 20.0 - 18.2 91.0 1.8 17.7 88.4 2.3 17.7 88.4 2.3 - - - Mabelah South P061 20.0 20.0 20.0 - 30.2 151.1 -10.2 32.4 161.8 -12.4 35.8 179.2 -15.8 - - - Palace P033 1TX 1TX 1TX - 0.5 - - 0.5 - - 0.5 - - - - - Communication RGO Halban Camp P034 1TX 1TX 1TX - 1.0 - - 1.0 - - 1.0 - - - - - Primary Substations Bus Voltages 2017 2018 2019 2020 Primary P.No. 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) Mabelah South-A P061 94.8 95.2 99.1 102.7 96.9 99.6 - - Mabelah South-B P061 99.9 102.6 99.1 102.6 96.8 99.5 - - Manoma 1-A P067 102.2 100.1 103.6 102.0 102.3 100.6 - - Manoma 1-B P067 101.6 98.9 103.1 100.9 101.8 99.6 - - Old Mabelah-A P059 96.1 101.4 97.4 101.1 - - - - Palace P033 102.7 102.0 104.1 103.3 102.8 102.0 - - Communication-A RGO Halban Camp-A P034 102.7 103.4 104.1 104.8 102.8 103.5 - - Primary Substation 3-Phase Fault Current Levels 33kV -Rated SC Capacity(kA) 11kV -Rated SC Capacity(kA) 2017 2018 2019 2020 Primary P.No. 2017 2018 2019 2020 2017 2018 2019 2020 33kV 11kV 33kV 11kV 33kV 11kV 33kV 11kV Mabelah South-A P061 25.0 25.0 25.0 - 18.4 18.4 18.4 - 4.2 6.2 4.1 5.9 4.1 6.0 - - Mabelah South-B P061 25.0 25.0 25.0 - 18.4 18.4 18.4 - 3.9 5.3 4.1 5.9 4.1 6.0 - - Manoma 1-A P067 25.0 25.0 25.0 - 18.4 18.4 18.4 - 7.7 7.4 7.7 7.4 7.7 7.4 - - Manoma 1-B P067 25.0 25.0 25.0 - 18.4 18.4 18.4 - 7.2 7.5 7.2 7.5 7.2 7.5 - - Old Mabelah-A P059 25.0 25.0 25.0 - 18.4 18.4 18.4 - 3.4 5.4 3.4 5.5 - - - - Palace Communication-A P033 25.0 25.0 25.0 - 4.0 1.0 4.0 1.0 4.0 1.0 - - RGO Halban Camp-A P034 25.0 25.0 25.0 - 4.1 2.7 4.1 2.7 4.1 2.7 - - 33kV Feeder Loads Circuit Rating(MVA) 2017 2018 2019 2020 Primary 2017 2018 2019 2020 MVA %Loading MVA %Loading MVA %Loading MVA %Loading Mabelah South-F1-P061 22.0 22.0 22.0 - 24.0 109.0% 17.7 80.5% 20.0 90.7% - - Mabelah South-F2-P061 22.0 22.0 22.0 - 10.2 46.2% 17.7 80.5% 20.0 90.8% - - Manoma 1-F1-P067 22.0 22.0 22.0 - 7.9 35.7% 7.6 34.6% 7.6 34.7% - - Manoma 1-F2-P067 22.0 22.0 22.0 - 10.9 49.4% 10.5 47.6% 10.5 47.7% - - Old Mabelah-F1-P059 15.4 15.4 - - 16.8 108.9% 18.1 117.6% - - RGO Halban Camp-F1-P034 15.4 15.4 15.4 - 1.6 10.1% 1.6 10.1% 1.6 10.1% - -

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

Mabelah 1 Grid Network Results Primary Substations Peak Demand 2017 2018 2019 2020 Primary Substation P.No. MW MVAr MW MVAr MW MVAr MW MVAr Mabelah Grid GP04 23.9 8.9 26.5 8.7 29.3 9.6 19.1 6.3 Mabelah A P063 17.6 4.2 19.5 4.7 - - - - Mabelah A(Upgrade) P063 - - - - 21.6 5.2 23.9 5.7 Sur Al Hadid P116 24.5 7.8 26.6 8.4 - - - - Sur Al P116 - - - - 28.9 9.2 31.4 9.9 Hadid(Upgrade) Old Mabelah * P059 21.3 8.7 23.6 7.8 - - - - Botanic Garden P016 9.2 3.9 9.2 3.0 9.2 3.0 9.2 3.0 Mabelah South PH-7 P141 24.7 3.9 27.3 4.3 - - - - Mabelah South PH- P141 - - - - 30.3 4.7 - - 7(Upgrade) Mabelah Industrial P191 4.1 1.8 4.1 1.8 4.1 1.8 4.1 1.8 Mabelah PH-5 P190 3.8 1.6 3.8 1.6 3.8 1.6 3.8 1.6 ROP Dog Kennel P183 - - 3.5 1.2 3.5 1.2 3.5 1.2 Mabelah STP P140 5.0 2.2 5.0 2.2 5.0 2.2 5.0 2.2 Percentage Loading of Primary Substations Firm Capacity(MVA) Load'2017 Load'2018 Load'2019 Load'2020 Primary P.No. N-1 N-1 N-1 N-1 2017 2018 2019 2020 MVA % MVA % MVA % MVA % Spare Spare Spare Spare Mabelah Grid GP04 20.0 20.0 20.0 20.0 25.5 127.5 -5.5 27.9 139.3 -7.9 30.8 154.2 -10.8 20.2 100.8 -0.2 Mabelah A P063 20.0 20.0 - - 18.1 90.5 1.9 20.0 100.2 0.0 ------Mabelah A(Upgrade) P063 - - 40.0 40.0 ------22.2 55.5 17.8 24.6 61.4 15.4 Sur Al Hadid P116 20.0 20.0 - - 25.7 128.5 -5.7 27.9 139.5 -7.9 ------Sur Al P116 - - 40.0 40.0 ------30.3 75.7 9.7 32.9 82.2 7.1 Hadid(Upgrade) Old Mabelah * P059 20.0 20.0 - - 23.0 115.0 -3.0 24.8 124.1 -4.8 ------Botanic Garden P016 20.0 20.0 20.0 20.0 10.0 50.0 10.0 9.7 48.4 10.3 9.7 48.4 10.3 9.7 48.4 10.3 Mabelah South PH-7 P141 20.0 20.0 - - 25.0 125.0 -5.0 27.7 138.4 -7.7 ------Mabelah South PH- P141 - - 40.0 ------30.6 76.6 9.4 - - - 7(Upgrade) Mabelah Industrial P191 1TX 1TX 1TX 1TX 4.5 - - 4.5 - - 4.5 - - 4.5 - - Mabelah PH-5 P190 1TX 1TX 1TX 1TX 4.1 - - 4.1 - - 4.1 - - 4.1 - - ROP Dog Kennel P183 - 6.0 6.0 6.0 - - - 3.7 61.9 2.3 3.7 61.9 2.3 3.7 61.9 2.3 Mabelah STP P140 10.0 10.0 10.0 10.0 5.5 54.7 4.5 5.5 54.7 4.5 5.5 54.7 4.5 5.5 54.7 4.5

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

Primary Substations Bus Voltages 2017 2018 2019 2020 Primary P.No. 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) Botanic Garden-A P016 100.4 103.6 100.0 103.5 100.2 103.6 100.1 103.5 Botanic Garden-B P016 100.5 103.6 100.1 103.5 100.2 103.6 100.1 103.5 Mabelah A-A P063 100.5 103.3 100.1 102.6 100.3 103.4 100.2 103.1 Mabelah A-B P063 100.5 103.3 100.1 102.6 100.3 103.4 100.2 103.1 Mabelah A-C P063 - - - - 100.3 103.4 100.2 103.1 Mabelah Grid-A GP04 100.8 101.8 100.4 101.4 100.6 101.0 100.5 102.5 Mabelah Grid-B GP04 100.8 101.8 100.4 101.4 100.6 101.0 100.5 102.5 Mabelah Industrial-A P191 100.5 102.7 100.1 102.3 100.2 102.4 100.1 102.3 Mabelah PH-5 -A P190 99.9 102.3 99.5 101.9 99.6 102.0 99.5 101.9 Mabelah South PH-7-A P141 100.1 103.1 99.7 102.4 99.9 102.9 - - Mabelah South PH-7-B P141 99.8 102.1 99.3 101.2 99.9 102.9 - - Mabelah South PH-7-C P141 - - - - 99.9 102.9 - - Mabelah STP-A P140 100.6 104.1 100.2 103.7 100.3 103.9 100.2 103.8 Mabelah STP-B P140 100.6 104.1 100.2 103.7 100.3 103.9 100.2 103.8 Old Mabelah-A [Fed P059 ------from Barka Grid] Old Mabelah-B P059 99.1 101.4 98.6 101.1 - - - - ROP Dog Kennel-A P183 - - 100.4 104.2 100.6 104.3 100.5 104.2 ROP Dog Kennel-B P183 - - 100.4 104.2 100.6 104.3 100.5 104.2 Sur Al Hadid -A P116 99.1 100.3 98.5 99.3 99.2 101.2 99.0 100.7 Sur Al Hadid -B P116 99.1 100.2 98.5 99.3 99.2 101.2 99.0 100.7 Sur Al Hadid -C P116 - - - - 99.2 101.2 99.0 100.7 Primary Substation 3-Phase Fault Current Levels 33kV -Rated SC Capacity(kA) 11kV -Rated SC Capacity(kA) 2017 2018 2019 2020 Primary P.No. 2017 2018 2019 2020 2017 2018 2019 2020 33kV 11kV 33kV 11kV 33kV 11kV 33kV 11kV Botanic Garden-A P016 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 10.9 12.8 11.1 12.8 11.1 12.8 11.0 12.7 Botanic Garden-B P016 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 11.3 12.8 11.4 12.8 11.5 12.8 11.3 12.7 Mabelah A-A P063 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 16.1 14.0 16.5 14.3 16.5 13.9 16.1 13.9 Mabelah A-B P063 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 16.1 14.0 16.5 14.3 16.5 13.9 16.2 13.9 Mabelah A-C P063 - - 25.0 25.0 - - 25.0 25.0 - - - - 16.4 7.7 16.2 7.7 Mabelah Grid-A GP04 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 24.1 8.4 24.9 8.5 25.0 8.6 24.1 8.2 Mabelah Grid-B GP04 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 24.1 8.5 24.9 8.6 25.0 8.7 24.1 8.3 Mabelah Industrial-A P191 25.0 25.0 25.0 25.0 12.5 12.5 12.5 12.5 11.5 4.6 11.7 4.6 11.7 4.6 11.5 4.6 Mabelah PH-5 -A P190 25.0 25.0 25.0 25.0 12.5 12.5 12.5 12.5 5.2 4.0 5.3 4.0 5.3 4.0 5.2 4.0 Mabelah South PH-7-A P141 25.0 25.0 25.0 - 25.0 25.0 25.0 - 12.3 7.7 12.5 7.8 12.8 13.9 - - Mabelah South PH-7-B P141 25.0 25.0 25.0 - 25.0 25.0 25.0 - 12.4 7.9 12.6 8.0 12.8 13.9 - - Mabelah South PH-7-C P141 - - 25.0 - - - 25.0 - - - - - 12.6 7.6 - - Mabelah STP-A P140 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 9.7 10.3 9.8 10.4 9.8 10.4 9.7 10.3 Mabelah STP-B P140 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 9.7 10.3 9.8 10.4 9.8 10.4 9.7 10.3 Old Mabelah-A [Fed P059 25.0 25.0 - - 20.0 20.0 ------from Barka Grid] Old Mabelah-B P059 25.0 25.0 - - 20.0 20.0 - - 5.2 5.9 5.2 6.0 - - - - ROP Dog Kennel-A P183 - 25.0 25.0 25.0 - 25.0 25.0 25.0 - - 22.2 8.7 22.3 8.7 21.5 8.7 ROP Dog Kennel-B P183 - 25.0 25.0 25.0 - 25.0 25.0 25.0 - - 22.2 8.7 22.3 8.7 21.5 8.7 Sur Al Hadid -A P116 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 8.8 7.2 8.9 7.3 9.3 12.9 9.4 18.0 Sur Al Hadid -B P116 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 8.8 7.2 8.9 7.3 9.3 12.9 9.4 18.0 Sur Al Hadid -C P116 - - 25.0 25.0 - - 25.0 25.0 - - - - 8.8 7.0 9.4 18.0

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

33kV Feeder Loads Circuit Rating(MVA) 2017 2018 2019 2020 Primary 2017 2018 2019 2020 MVA %Loading MVA %Loading MVA %Loading MVA %Loading Botanic Garden-F1-P016 22.0 22.0 22.0 22.0 4.8 22.0% 4.7 21.5% 4.7 21.5% 4.7 21.5% Botanic Garden-F2-P016 22.0 22.0 22.0 22.0 4.9 22.1% 4.7 21.5% 4.7 21.5% 4.7 21.5% Mabelah A-F1-P063 22.0 22.0 22.0 22.0 9.1 41.4% 10.1 46.0% 7.4 33.6% 8.2 37.3% Mabelah A-F2-P063 22.0 22.0 22.0 22.0 9.3 42.2% 10.3 46.8% 7.6 34.4% 8.4 38.1% Mabelah A-F3-P063 - - 22.0 22.0 - - - - 7.5 34.2% 8.3 37.9% Mabelah Grid-F1-GP04 22.0 22.0 22.0 22.0 13.2 59.8% 14.4 65.3% 16.0 72.6% 10.3 46.8% Mabelah Grid-F2-GP04 22.0 22.0 22.0 22.0 13.3 60.4% 14.5 66.0% 16.1 73.3% 10.4 47.2% Mabelah Industrial-F1-P191 22.0 22.0 22.0 22.0 4.6 20.8% 4.6 20.8% 4.6 20.8% 4.6 20.8% Mabelah PH-5-F1-P190 22.0 22.0 22.0 22.0 4.2 19.1% 4.2 19.1% 4.2 19.1% 4.2 19.1% Mabelah South PH-7-F1-P141 22.0 22.0 22.0 - 10.7 48.4% 11.8 53.8% 10.4 47.2% - - Mabelah South PH-7-F2-P141 22.0 22.0 22.0 - 14.8 67.4% 16.5 74.9% 10.3 46.9% - - Mabelah South PH-7-F3-P141 - - 22.0 - - - - - 10.4 47.2% - - Mabelah STP-F1-P140 22.0 22.0 22.0 22.0 2.5 11.5% 2.5 11.5% 2.5 11.5% 2.5 11.5% Mabelah STP-F2-P140 22.0 22.0 22.0 22.0 2.8 12.6% 2.8 12.6% 2.8 12.6% 2.8 12.6% Old Mabelah-F1OHL-P059 15.4 15.4 ------Old Mabelah-F2OHL-P059 15.4 15.4 - - 8.0 52.0% 8.7 56.2% - - - - ROP Dog Kennel-F1-P183 - 22.0 22.0 22.0 - - 1.9 8.4% 1.9 8.4% 1.9 8.4% ROP Dog Kennel-F2-P183 - 22.0 22.0 22.0 - - 1.9 8.5% 1.9 8.5% 1.9 8.5% Sur Al Hadid-F1-P116 22.0 22.0 22.0 22.0 13.0 59.2% 14.2 64.7% 10.1 46.1% 11.1 50.3% Sur Al Hadid-F2-P116 22.0 22.0 22.0 22.0 13.4 60.7% 14.6 66.2% 10.4 47.1% 11.1 50.3% Sur Al Hadid-F3-P116 - - 22.0 22.0 - - - - 10.4 47.1% 11.1 50.3% * Old Mabelah - P059 is having a split feeder source arrangement with Feeder 1 from Barka Grid and Feeder 2 from Mabelah 1 Grid. By 2019, both the incoming feeders will be connected from one source i.e. A'Salam B [Mabelah 2] Grid.

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

A'salam - A(Mabelah 2) Grid Network Results Primary Substations Peak Demand 2017 2018 2019 2020 Primary Substation P.No. MW MVAr MW MVAr MW MVAr MW MVAr Mabelah Shabiya P060 28.3 12.1 31.3 10.3 - - - - Mabelah P060 - - - - 34.7 11.4 38.4 12.6 Shabiya(Upgrade) Mabelah C P064 23.9 4.9 26.5 5.4 - - - - Mabelah C(Upgrade) P064 - - - - 37.7 7.7 41.7 8.6

Mabelah South PH-4 P062 40.1 16.3 44.4 14.6 - - - - Mabelah South PH-8 P157 15.8 6.8 17.5 5.7 19.3 6.4 21.4 7.0 PalmMall P168 - - 15.9 5.2 17.6 5.8 19.5 6.4 Percentage Loading of Primary Substations Firm Capacity(MVA) Load'2017 Load'2018 Load'2019 Load'2020

Primary P.No. N-1 N-1 N-1 N-1 2017 2018 2019 2020 MVA % MVA % MVA % MVA % Spare Spare Spare Spare Mabelah Shabiya P060 20.0 20.0 - - 30.8 154.1 -10.8 33.0 165.0 -13.0 ------Mabelah P060 - - 40.0 40.0 ------36.5 91.3 3.5 40.4 101.1 -0.4 Shabiya(Upgrade) Mabelah C P064 20.0 20.0 - - 24.4 122.0 -4.4 27.0 135.1 -7.0 ------Mabelah C(Upgrade) P064 - - 40.0 40.0 ------38.5 96.2 1.5 42.6 106.5 -2.6 Mabelah South PH-4 P062 40.0 40.0 40.0 40.0 43.3 108.3 -3.3 46.7 116.8 -6.7 ------Mabelah South PH-8 P157 40.0 40.0 40.0 40.0 17.2 42.9 22.8 18.4 46.0 21.6 20.3 50.9 19.7 22.5 56.3 17.5 PalmMall P168 - 40.0 40.0 40.0 - - - 16.7 41.8 23.3 18.5 46.3 21.5 20.5 51.3 19.5 Primary Substations Bus Voltages 2017 2018 2019 2020 Primary P.No. 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) Mabelah C-A P064 100.1 101.4 100.8 101.8 100.9 103.2 100.4 102.4 Mabelah C-B P064 100.1 103.4 100.9 104.1 100.9 103.2 100.4 102.4 Mabelah C-C P064 - - - - 100.9 103.1 100.4 102.3 Mabelah Shabiya-A P060 99.7 100.3 100.4 101.5 100.6 102.8 100.1 101.9 Mabelah Shabiya-B P060 99.7 100.5 100.5 101.7 100.6 102.8 100.1 102.0 Mabelah Shabiya-C P060 - - - - 100.6 102.1 100.1 101.1 Mabelah South PH-4-A P062 99.9 100.7 100.6 101.7 - - - - Mabelah South PH-4-B P062 99.8 99.3 100.5 100.4 - - - - Mabelah South PH-4-C P062 99.8 99.5 100.5 100.7 - - - - Mabelah South PH-8-A P157 99.9 103.1 100.6 103.7 100.6 103.5 100.0 102.8 Mabelah South PH-8-B P157 99.9 103.1 100.6 103.7 100.6 103.5 100.0 102.8 Mabelah South PH-8-C P157 99.6 101.9 100.6 103.7 100.6 103.5 100.0 102.8 Palm Mall-A P168 - - 100.9 104.1 100.9 104.0 100.4 103.3 Palm Mall-B P168 - - 100.9 104.1 100.9 104.0 100.4 103.3 Palm Mall-C P168 - - 100.9 104.1 100.9 104.0 100.4 103.3

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

Primary Substation 3-Phase Fault Current Levels 33kV -Rated SC Capacity(kA) 11kV -Rated SC Capacity(kA) 2017 2018 2019 2020 Primary P.No. 2017 2018 2019 2020 2017 2018 2019 2020 33kV 11kV 33kV 11kV 33kV 11kV 33kV 11kV Mabelah C-A P064 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 22.5 9.1 23.3 9.3 22.7 15.9 23.0 8.9 Mabelah C-B P064 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 22.5 8.2 23.2 8.3 22.7 15.9 23.0 8.9 Mabelah C-C P064 - - 25.0 25.0 - - 25.0 25.0 - - - - 22.7 8.6 23.0 8.8 Mabelah Shabiya-A P060 25.0 25.0 25.0 25.0 18.4 18.4 25.0 25.0 17.6 10.2 18.1 10.4 17.8 17.7 17.9 10.1 Mabelah Shabiya-B P060 25.0 25.0 25.0 25.0 18.4 18.4 25.0 25.0 17.7 10.2 18.1 10.3 17.9 17.7 18.0 10.1 Mabelah Shabiya-C P060 - - 25.0 25.0 - - 25.0 25.0 - - - - 17.7 8.3 17.9 8.4 Mabelah South PH-4-A P062 25.0 25.0 - - 20.0 20.0 - - 18.7 8.2 19.2 8.4 - - - - Mabelah South PH-4-B P062 25.0 25.0 - - 20.0 20.0 - - 18.8 8.7 19.3 8.9 - - - - Mabelah South PH-4-C P062 25.0 25.0 - - 20.0 20.0 - - 18.7 8.7 19.3 8.8 - - - - Mabelah South PH-8-A P157 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 12.6 13.4 12.8 13.8 12.7 13.8 12.8 14.0 Mabelah South PH-8-B P157 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 12.6 13.4 12.8 13.8 12.7 13.8 12.8 14.0 Mabelah South PH-8-C P157 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 12.3 7.7 12.5 7.6 12.4 7.6 12.5 7.7 Palm Mall-A P168 - 25.0 25.0 25.0 - 25.0 25.0 25.0 - - 21.1 14.2 20.6 14.3 20.9 14.5 Palm Mall-B P168 - 25.0 25.0 25.0 - 25.0 25.0 25.0 - - 21.1 14.2 20.6 14.3 20.9 14.5 Palm Mall-C P168 - 25.0 25.0 25.0 - 25.0 25.0 25.0 - - 21.0 7.8 20.6 7.9 20.8 7.9 33kV Feeder Loads Circuit Rating(MVA) 2017 2018 2019 2020 Primary 2017 2018 2019 2020 MVA %Loading MVA %Loading MVA %Loading MVA %Loading Mabelah C-A-P064 22.0 22.0 22.0 22.0 17.5 79.6% 19.5 88.5% 13.1 59.5% 14.6 66.1% Mabelah C-B-P064 22.0 22.0 22.0 22.0 7.7 35.0% 8.5 38.8% 13.1 59.7% 14.6 66.2% Mabelah C-C-P064 - - 22.0 22.0 - - - - 13.1 59.6% 14.6 66.2% Mabelah Shabiya-A-P060 22.0 22.0 22.0 22.0 16.2 73.8% 17.3 78.8% 12.4 56.4% 13.8 62.7% Mabelah Shabiya-B-P060 22.0 22.0 22.0 22.0 15.7 71.2% 16.7 76.1% 12.4 56.4% 13.8 62.7% Mabelah Shabiya-C-P060 - - 22.0 22.0 - - - - 12.5 56.8% 13.9 63.2% Mabelah South PH-4-A-P062 22.0 22.0 - - 12.5 56.8% 13.5 61.2% - - - - Mabelah South PH-4-B-P062 22.0 22.0 - - 16.7 76.0% 18.0 81.7% - - - - Mabelah South PH-4-C-P062 22.0 22.0 - - 16.0 72.8% 17.2 78.3% - - - - Mabelah South PH-8-A-P157 22.0 22.0 22.0 22.0 4.6 20.7% 6.0 27.5% 6.7 30.5% 7.5 34.0% Mabelah South PH-8-B-P157 22.0 22.0 22.0 22.0 4.8 21.7% 6.2 28.3% 6.9 31.4% 7.7 34.8% Mabelah South PH-8-C-P157 22.0 22.0 22.0 22.0 7.7 34.8% 6.0 27.5% 6.7 30.5% 7.5 34.0% Palm Mall-A-P168-Pvt - 22.0 22.0 22.0 - - 5.6 25.5% 6.2 28.3% 6.9 31.4% Palm Mall-B-P168-Pvt - 22.0 22.0 22.0 - - 5.7 25.7% 6.3 28.5% 7.0 31.6% Palm Mall-C-P168-Pvt - 22.0 22.0 22.0 - - 5.6 25.5% 6.2 28.3% 6.9 31.4%

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

A'salam - B(Mabelah 2) Grid Network Results Primary Substations Peak Demand 2017 2018 2019 2020 Primary Substation P.No. MW MVAr MW MVAr MW MVAr MW MVAr Mabelah South PH-4 P062 - - - - 49.1 16.2 37.8 12.4 Old Mabelah P059 - - - - 15.0 4.9 16.6 5.5 Mabelah South PH P185 ------29.9 9.8 6[Oldname:Halban] Mabelah South 9 P184 ------10.0 3.2 Percentage Loading of Primary Substations Firm Capacity(MVA) Load'2017 Load'2018 Load'2019 Load'2020 Primary P.No. N-1 N-1 N-1 N-1 2017 2018 2019 2020 MVA % MVA % MVA % MVA % Spare Spare Spare Spare Mabelah South PH-4 P062 - - 40.0 40.0 ------51.7 129.3 -11.7 39.8 99.5 0.2 Old Mabelah P059 - - 20.0 20.0 ------15.8 79.1 4.2 17.5 87.6 2.5 Mabelah South PH P185 - - - 40.0 ------31.5 78.7 8.5 6[Oldname:Halban] Mabelah South 9 P184 - - - 40.0 ------10.5 26.3 29.5 Primary Substations Bus Voltages 2017 2018 2019 2020 Primary P.No. 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) Mabelah South 9-A P184 ------101.0 104.8 Mabelah South 9-B P184 ------101.0 104.8 Mabelah South 9-C P184 ------101.0 104.8 Mabelah South PH-4-A P062 - - - - 100.4 101.0 99.8 101.0 Mabelah South PH-4-B P062 - - - - 100.2 99.5 99.8 101.0 Mabelah South PH-4-C P062 - - - - 100.3 99.8 99.8 100.6 Mabelah South PH 6-A P185 ------100.0 101.8 Mabelah South PH 6-B P185 ------100.0 101.8 Mabelah South PH 6-C P185 ------100.0 101.8 Old Mabelah-A P059 - - - - 99.9 102.5 99.2 101.6 Old Mabelah-B P059 - - - - 99.9 102.5 99.2 101.6

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

Primary Substation 3-Phase Fault Current Levels 33kV -Rated SC Capacity(kA) 11kV -Rated SC Capacity(kA) 2017 2018 2019 2020 Primary P.No. 2017 2018 2019 2020 2017 2018 2019 2020 33kV 11kV 33kV 11kV 33kV 11kV 33kV 11kV Mabelah South 9-A P184 - - - 25.0 - - - 25.0 ------18.3 13.5 Mabelah South 9-B P184 - - - 25.0 - - - 25.0 ------18.3 13.5 Mabelah South 9-C P184 - - - 25.0 - - - 25.0 ------18.2 7.5 Mabelah South PH-4-A P062 - - 25.0 25.0 - - 20.0 20.0 - - - - 18.1 8.4 18.6 15.3 Mabelah South PH-4-B P062 - - 25.0 25.0 - - 20.0 20.0 - - - - 18.2 9.0 18.6 15.3 Mabelah South PH-4-C P062 - - 25.0 25.0 - - 20.0 20.0 - - - - 18.2 8.9 18.6 8.6 Mabelah South PH 6-A P185 - - - 25.0 - - - 25.0 ------19.9 15.0 Mabelah South PH 6-B P185 - - - 25.0 - - - 25.0 ------19.9 15.0 Mabelah South PH 6-C P185 - - - 25.0 - - - 25.0 ------19.9 8.3 Old Mabelah-A P059 - - 25.0 25.0 - - 20.0 20.0 - - - - 8.8 12.9 8.9 13.1 Old Mabelah-B P059 - - 25.0 25.0 - - 20.0 20.0 - - - - 8.8 12.9 8.9 13.1 33kV Feeder Loads Circuit Rating(MVA) 2017 2018 2019 2020 Primary 2017 2018 2019 2020 MVA %Loading MVA %Loading MVA %Loading MVA %Loading Mabelah South 9-A-P184 - - - 22.0 ------3.3 15.0% Mabelah South 9-B-P184 - - - 22.0 ------3.3 15.0% Mabelah South 9-C-P184 - - - 22.0 ------3.3 15.0% Mabelah South PH-4-A-P062 - - 22.0 22.0 - - - - 15.0 68.1% 13.2 59.8% Mabelah South PH-4-B-P062 - - 22.0 22.0 - - - - 20.0 91.0% 13.4 61.0% Mabelah South PH-4-C-P062 - - 22.0 22.0 - - - - 19.2 87.3% 14.6 66.2% Mabelah South PH 6-A-P185 - - - 22.0 ------10.7 48.8% Mabelah South PH 6-B-P185 - - - 22.0 ------10.8 49.0% Mabelah South PH 6-C-P185 - - - 22.0 ------10.7 48.8% Old Mabelah-A-P059 - - 22.0 22.0 - - - - 8.1 36.9% 9.0 41.0% Old Mabelah-B-P059 - - 22.0 22.0 - - - - 8.1 36.7% 9.0 40.8%

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

Halban Grid Network Results Primary Substations Peak Demand 2017 2018 2019 2020 Primary Substation P.No. MW MVAr MW MVAr MW MVAr MW MVAr Mabelah South PH-7 P141 ------33.5 5.2 Manomah P067 ------16.8 5.5 Mabelah P061 ------37.7 12.4 PalaceSouth(Upgrade) P033 ------0.5 0.2 Communication RGO Halban Camp P034 ------1.0 0.4 Percentage Loading of Primary Substations Firm Capacity(MVA) Load'2017 Load'2018 Load'2019 Load'2020 Primary P.No. N-1 N-1 N-1 N-1 2017 2018 2019 2020 MVA % MVA % MVA % MVA % Spare Spare Spare Spare Mabelah South PH-7 P141 - - - 40.0 ------33.9 84.8 6.1 Manomah P067 - - - 20.0 ------17.7 88.4 2.3 Mabelah P061 - - - 40.0 ------39.7 99.2 0.3 PalaceSouth(Upgrade) P033 - - - 1TX ------0.5 - - Communication RGO Halban Camp P034 - - - 1TX ------1.0 - - Primary Substations Bus Voltages 2017 2018 2019 2020 Primary P.No. 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) Mabelah South-A P061 ------98.8 99.8 Mabelah South-B P061 ------98.8 99.8 Mabelah South-C P061 ------98.8 99.7 Mabelah South PH-7-A P141 ------100.3 103.2 Mabelah South PH-7-B P141 ------100.3 103.2 Mabelah South PH-7-C P141 ------100.3 103.2 Manoma 1-A P067 ------98.3 100.7 Manoma 1-B P067 ------98.3 100.7 Palace Communication-A P033 ------100.7 104.1 RGO Halban Camp-A P034 ------100.7 104.5 Primary Substation 3-Phase Fault Current Levels 33kV -Rated SC Capacity(kA) 11kV -Rated SC Capacity(kA) 2017 2018 2019 2020 Primary P.No. 2017 2018 2019 2020 2017 2018 2019 2020 33kV 11kV 33kV 11kV 33kV 11kV 33kV 11kV Mabelah South-A P061 - - - 25.0 - - - 25.0 ------7.4 13.1 Mabelah South-B P061 - - - 25.0 - - - 25.0 ------7.4 13.1 Mabelah South-C P061 - - - 25.0 - - - 25.0 ------6.7 6.9 Mabelah South PH-7-A P141 - - - 25.0 - - - 25.0 ------13.1 14.6 Mabelah South PH-7-B P141 - - - 25.0 - - - 25.0 ------13.1 14.6 Mabelah South PH-7-C P141 - - - 25.0 - - - 25.0 ------12.9 7.9 Manoma 1-A P067 - - - 25.0 - - - 18.4 ------4.9 10.7 Manoma 1-B P067 - - - 25.0 - - - 18.4 ------4.9 10.7 Palace Communication-A P033 - - - 25.0 ------5.7 1.1 RGO Halban Camp-A P034 - - - 25.0 ------6.0 2.9

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

33kV Feeder Loads Circuit Rating(MVA) 2017 2018 2019 2020 Primary 2017 2018 2019 2020 MVA %Loading MVA %Loading MVA %Loading MVA %Loading Mabelah South-F1-P061 - - - 22.0 ------14.0 63.8% Mabelah South-F2-P061 - - - 22.0 ------13.9 63.1% Mabelah South-F3-P061 - - - 22.0 ------14.0 63.5% Mabelah South PH-7-F1-P141 - - - 22.0 ------11.5 52.4% Mabelah South PH-7-F2-P141 - - - 22.0 ------11.4 52.0% Mabelah South PH-7-F3-P141 - - - 22.0 ------11.5 52.3%

Manoma 1-F1-P067 - - - 22.0 ------9.2 42.0%

Manoma 1-F2-P067 - - - 22.0 ------9.3 42.2% RGO Halban Camp-F1-P034 (+ - - - 10.1% Palace Commmunication) - - - 15.4 - - - 1.6

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

Seeb Main -A Grid Network Results Primary Substations Peak Demand 2017 2018 2019 2020 Primary Substation P.No. MW MVAr MW MVAr MW MVAr MW MVAr Seeb Grid GP08 16.8 7.0 15.5 5.1 12.4 4.1 13.5 4.4 Sultan School P029 23.4 10.1 24.2 7.9 18.8 6.2 19.4 6.4 Al Hail South 2 P153 16.1 5.5 16.6 5.6 29.6 10.0 30.5 10.4 New Al Khoud P047 - - - - 14.3 4.7 16.0 5.2 Seeb05(Boulevard) P186 - - - - 35.9 11.8 44.4 14.6 Al Khoud New P187 - - - - 35.6 11.7 39.6 13.0 Percentage Loading of Primary Substations Firm Capacity(MVA) Load'2017 Load'2018 Load'2019 Load'2020 Primary P.No. N-1 N-1 N-1 N-1 2017 2018 2019 2020 MVA % MVA % MVA % MVA % Spare Spare Spare Spare Seeb Grid GP08 20.0 20.0 20.0 20.0 18.2 91.0 1.8 16.3 81.4 3.7 13.1 65.3 6.9 14.2 70.9 5.8 Sultan School P029 20.0 20.0 20.0 20.0 25.5 127.5 -5.5 25.4 127.2 -5.4 19.8 98.8 0.2 20.4 102.0 -0.4 Al Hail South 2 P153 40.0 40.0 40.0 40.0 17.0 42.5 23.0 17.6 43.9 22.4 31.2 78.1 8.8 32.2 80.6 7.8 New Al Khoud P047 - - 20.0 20.0 ------15.1 75.5 4.9 16.8 84.0 3.2 Seeb05(Boulevard) P186 - - 40.0 40.0 ------37.7 94.4 2.3 46.7 116.7 -6.7 Al Khoud New P187 - - 40.0 40.0 ------37.5 93.6 2.5 41.6 104.1 -1.6 Primary Substations Bus Voltages 2017 2018 2019 2020 Primary P.No. 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) Khod New-A P187 - - - - 99.2 100.4 99.1 99.9 Khod New-B P187 - - - - 99.2 100.4 99.1 99.9 Khod New-C P187 - - - - 99.2 100.4 99.1 99.9 New Al Khoud-A P047 - - - - 99.6 102.2 99.5 101.9 New Al Khoud-B P047 - - - - 99.6 102.2 99.5 101.9 Seeb Grid-A GP08 100.0 97.5 100.0 97.5 100.0 98.5 100.0 98.4 Seeb Grid-B GP08 100.0 97.5 100.0 97.5 100.0 98.5 100.0 98.4 Seeb05 (Boulevard)-A P186 - - - - 99.8 101.0 99.7 100.1 Seeb05 (Boulevard)-C P186 - - - - 99.8 101.0 99.7 100.1 Seeb05 (Boulevard)-C P186 - - - - 99.8 101.0 99.7 100.1 Sultan School-A P029 99.7 101.9 99.8 101.9 99.7 101.7 99.8 102.8 Sultan School-B P029 99.4 97.9 99.4 97.9 99.7 101.7 99.5 100.2 Al Hail South 2-A P153 99.9 103.8 99.7 103.8 99.4 101.2 99.3 101.0 Al Hail South 2-B P153 99.9 103.8 99.7 103.8 99.4 101.2 99.3 101.0 Al Hail South 2-C P153 99.3 100.6 99.7 100.6 99.4 101.2 99.3 101.0

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

Primary Substation 3-Phase Fault Current Levels 33kV -Rated SC Capacity(kA) 11kV -Rated SC Capacity(kA) 2017 2018 2019 2020 Primary P.No. 2017 2018 2019 2020 2017 2018 2019 2020 33kV 11kV 33kV 11kV 33kV 11kV 33kV 11kV Khod New-A P187 - - 25.0 25.0 - - 25.0 25.0 - - - - 14.1 7.9 14.3 8.0 Khod New-B P187 - - 25.0 25.0 - - 25.0 25.0 - - - - 14.3 14.4 14.3 8.0 Khod New-C P187 - - 25.0 25.0 - - 25.0 25.0 - - - - 14.4 14.4 14.3 8.0 New Al Khoud-A P047 - - 25.0 25.0 - - 16.0 16.0 - - - - 12.7 13.4 12.8 13.5 New Al Khoud-B P047 - - 25.0 25.0 - - 16.0 16.0 - - - - 12.7 13.4 13.0 13.5 Seeb Grid-A GP08 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 13.9 14.4 13.8 14.2 25.4 16.4 25.8 16.5 Seeb Grid-B GP08 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 13.9 14.4 13.8 14.2 25.4 16.4 25.8 16.5 Seeb05 (Boulevard)-A P186 - - 25.0 25.0 - - 25.0 25.0 - - - - 21.3 15.1 21.6 8.5 Seeb05 (Boulevard)-C P186 - - 25.0 25.0 - - 25.0 25.0 - - - - 21.3 15.1 21.6 8.5 Seeb05 (Boulevard)-C P186 - - 25.0 25.0 - - 25.0 25.0 - - - - 21.3 8.3 21.6 8.5 Sultan School-A P029 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 11.5 7.2 11.4 7.2 18.1 14.4 18.2 7.7 Sultan School-B P029 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 11.5 7.9 11.4 7.9 18.1 14.4 18.3 8.2 Al Hail South 2-A P153 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 9.8 11.3 9.8 11.7 14.3 14.2 14.4 14.3 Al Hail South 2-B P153 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 9.8 11.3 9.8 11.7 14.3 14.2 14.5 14.3 Al Hail South 2-C P153 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 9.9 7.3 9.7 6.8 14.1 7.8 14.2 7.8 33kV Feeder Loads Circuit Rating(MVA) 2017 2018 2019 2020 Primary 2017 2018 2019 2020 MVA %Loading MVA %Loading MVA %Loading MVA %Loading Khod New-F1-P187 - - 22.0 22.0 - - - - 12.8 58.2% 14.3 65.2% Khod New-F2-P187 - - 22.0 22.0 - - - - 12.8 58.2% 14.3 65.2% Khod New-F3-P187 - - 22.0 22.0 - - - - 12.9 58.7% 14.4 65.5% New Al Khoud-F1-P047 - - 22.0 22.0 - - - - 7.7 35.1% 8.6 39.1% New Al Khoud-F2-P047 - - 22.0 22.0 - - - - 7.7 35.1% 8.6 39.1% Seeb Grid-F1-GP08 22.0 22.0 22.0 22.0 9.4 42.5% 8.3 37.8% 6.6 30.2% 7.2 32.8% Seeb Grid-F2-GP08 22.0 22.0 22.0 22.0 9.4 42.7% 8.3 37.9% 6.7 30.3% 7.2 32.9% Seeb05 (Boulevard)-F1-P186 - - 22.0 22.0 - - - - 13.0 59.0% 16.2 73.7% Seeb05 (Boulevard)-F2-P186 - - 22.0 22.0 - - - - 13.0 59.0% 16.2 73.7% Seeb05 (Boulevard)-F3-P186 - - 22.0 22.0 - - - - 13.0 59.1% 16.2 73.8% Sultan School-F1-P029 22.0 22.0 22.0 22.0 7.9 36.0% 7.9 35.9% 10.2 46.3% 6.3 28.6% Sultan School-F2-P029 22.0 22.0 22.0 22.0 18.7 85.2% 18.5 84.2% 10.0 45.2% 14.6 66.6% Al Hail South 2-F1-P153 22.0 22.0 22.0 22.0 2.4 11.0% 5.8 26.4% 10.6 48.1% 10.9 49.8% Al Hail South 2-F2-P153 22.0 22.0 22.0 22.0 2.4 11.0% 5.8 26.4% 10.6 48.1% 10.9 49.7% Al Hail South 2-F3-P153 22.0 22.0 22.0 22.0 12.4 56.4% 5.9 27.0% 10.7 48.6% 11.1 50.3%

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

Seeb Main -B Grid Network Results Primary Substations Peak Demand 2017 2018 2019 2020 Primary Substation P.No. MW MVAr MW MVAr MW MVAr MW MVAr Al Khoud Shabiya P046 19.6 5.3 21.8 5.9 15.3 4.1 17.1 4.6 New Al Khoud * P047 20.6 9.0 22.9 7.5 - - - - Wadi Bahayis (RGO) P098 17.8 6.9 19.3 6.4 21.0 6.9 22.8 7.5 Wadi Al Aresh P115 30.8 13.2 28.6 9.4 24.1 7.9 20.7 6.8 Wadi Al Lawami P117 25.0 13.9 ------Wadi Al P117 - - 34.7 11.4 33.6 11.1 36.5 12.0 Lawami(Upgrade) Al Khoud PH-7 P154 21.1 8.4 32.4 10.6 36.0 11.8 40.0 13.1

Percentage Loading of Primary Substations Firm Capacity(MVA) Load'2017 Load'2018 Load'2019 Load'2020 Primary P.No. N-1 N-1 N-1 N-1 2017 2018 2019 2020 MVA % MVA % MVA % MVA % Spare Spare Spare Spare Al Khoud Shabiya P046 20.0 20.0 20.0 20.0 20.3 101.5 -0.3 22.6 112.9 -2.6 15.9 79.4 4.1 17.7 88.3 2.3 New Al Khoud * P047 20.0 20.0 - - 22.5 112.5 -2.5 24.1 120.6 -4.1 ------Wadi Bahayis (RGO) P098 20.0 20.0 20.0 20.0 19.1 95.5 0.9 20.3 101.7 -0.3 22.1 110.4 -2.1 24.0 119.9 -4.0 Wadi Al Aresh P115 20.0 20.0 20.0 20.0 33.5 167.6 -13.5 30.1 150.7 -10.1 25.3 126.6 -5.3 21.8 108.9 -1.8 Wadi Al Lawami P117 20.0 - - - 28.6 143.0 -8.6 ------Wadi Al P117 - 40.0 40.0 40.0 - - - 36.5 91.3 3.5 35.4 88.5 4.6 38.5 96.1 1.5 Lawami(Upgrade) Al Khoud PH-7 P154 40.0 40.0 40.0 40.0 22.7 56.8 17.3 34.1 85.1 5.9 37.9 94.7 2.1 42.1 105.3 -2.1 Primary Substations Bus Voltages 2017 2018 2019 2020 Primary P.No. 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) Al Khoud PH-7-A P154 99.2 100.4 99.3 100.9 99.2 100.4 99.1 99.8 Al Khoud PH-7-B P154 99.2 100.4 99.3 100.9 99.2 100.4 99.1 99.9 Al Khoud PH-7-C P154 100.0 104.6 99.3 100.9 99.2 100.4 99.1 99.8 Al Khoud Shabiya-A P046 98.9 101.0 98.7 100.5 99.2 102.0 99.1 101.7 Al Khoud Shabiya-B P046 99.0 101.4 98.8 101.0 99.2 102.0 99.1 101.7 New Al Khoud-A P047 99.3 100.5 99.3 101.0 - - - - New Al Khoud-B P047 99.2 99.8 99.2 100.3 - - - - Wadi Al Aresh-A P115 98.4 97.4 98.7 99.2 98.9 100.1 99.3 102.3 Wadi Al Aresh-B P115 98.5 97.5 98.7 99.2 98.9 100.2 99.4 103.1 Wadi Al Lawami-A P117 99.8 98.8 99.9 101.2 99.9 101.3 99.9 101.0 Wadi Al Lawami-B P117 99.8 98.8 99.9 101.2 99.9 101.3 99.9 101.0 Wadi Al Lawami-C P117 - - 99.9 101.2 99.9 101.3 99.9 101.0 Wadi Bahayis (RGO)-A P098 99.9 101.6 99.9 101.8 99.9 101.5 99.8 101.2 Wadi Bahayis (RGO)-B P098 99.9 101.6 99.9 101.8 99.8 101.5 99.8 101.2

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

Primary Substation 3-Phase Fault Current Levels 33kV -Rated SC Capacity(kA) 11kV -Rated SC Capacity(kA) 2017 2018 2019 2020 Primary P.No. 2017 2018 2019 2020 2017 2018 2019 2020 33kV 11kV 33kV 11kV 33kV 11kV 33kV 11kV Al Khoud PH-7-A P154 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 13.9 14.3 13.9 14.3 13.7 14.5 13.6 8.0 Al Khoud PH-7-B P154 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 13.9 14.3 14.0 14.3 13.8 14.5 13.6 8.0 Al Khoud PH-7-C P154 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 13.5 6.9 13.7 7.8 13.5 7.9 13.6 8.0 Al Khoud Shabiya-A P046 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 8.6 7.0 8.7 7.1 9.0 12.5 9.1 12.7 Al Khoud Shabiya-B P046 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 8.6 7.0 8.6 7.1 9.1 12.5 9.1 12.7 New Al Khoud-A P047 25.0 25.0 - - 16.0 16.0 - - 12.4 7.5 12.5 7.6 - - - - New Al Khoud-B P047 25.0 25.0 - - 16.0 16.0 - - 12.5 7.7 12.5 7.7 - - - - Wadi Al Aresh-A P115 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 11.3 8.0 11.2 7.9 11.1 7.7 11.1 7.5 Wadi Al Aresh-B P115 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 11.7 8.0 11.7 8.0 11.5 7.7 11.5 7.6 Wadi Al Lawami-A P117 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 22.4 8.4 22.6 15.1 22.0 14.9 22.1 15.1 Wadi Al Lawami-B P117 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 22.5 8.4 22.6 15.1 22.0 14.9 22.1 15.1 Wadi Al Lawami-C P117 - 25.0 25.0 25.0 - 25.0 25.0 25.0 - - 22.6 8.3 22.0 8.2 22.1 8.3 Wadi Bahayis (RGO)-A P098 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 21.8 14.5 22.0 8.1 21.4 8.1 21.5 8.2 Wadi Bahayis (RGO)-B P098 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 21.8 14.5 21.9 8.0 21.3 8.1 21.5 8.1 33kV Feeder Loads Circuit Rating(MVA) 2017 2018 2019 2020 Primary 2017 2018 2019 2020 MVA %Loading MVA %Loading MVA %Loading MVA %Loading Wadi Al Aresh-F1-P115 22.0 22.0 22.0 22.0 17.8 81.0% 15.8 71.7% 13.1 59.7% 10.6 48.3% Wadi Al Aresh-F2-P115 22.0 22.0 22.0 22.0 17.8 80.8% 15.7 71.6% 13.1 59.7% 10.5 47.6% Wadi Al Lawami-F1-P117 22.0 22.0 22.0 22.0 15.1 68.6% 12.6 57.1% 12.2 55.3% 13.2 60.2% Wadi Al Lawami-F2-P117 22.0 22.0 22.0 22.0 15.1 68.6% 12.6 57.1% 12.2 55.3% 13.2 60.2% Wadi Al Lawami-F3-P117 - 22.0 22.0 22.0 - - 12.6 57.1% 12.2 55.3% 13.2 60.2% Wadi Bahayis (RGO)-F1-P098 22.0 22.0 22.0 22.0 9.8 44.7% 10.4 47.3% 11.3 51.4% 12.3 56.0% Wadi Bahayis (RGO)-F2-P098 22.0 22.0 22.0 22.0 9.8 44.4% 10.5 47.5% 11.4 51.7% 12.4 56.3% Al Khoud PH-7-F1-P154 22.0 22.0 22.0 22.0 11.5 52.5% 11.5 52.4% 12.9 58.6% 14.5 65.9% 0 22.0 22.0 22.0 22.0 11.7 53.0% 11.6 52.9% 13.0 59.2% 14.5 65.9% Al Khoud PH-7-F3-P154 22.0 22.0 22.0 22.0 0.0 0.2% 11.7 53.1% 13.0 59.3% 14.6 66.2% Al Khoud Shabiya-F1-P046 22.0 22.0 22.0 22.0 10.9 49.7% 12.1 55.0% 8.0 36.4% 8.9 40.7% Al Khoud Shabiya-F2-P046 22.0 22.0 22.0 22.0 9.9 44.8% 11.0 49.8% 8.1 37.0% 9.1 41.2% New Al Khoud-F1-P047 22.0 22.0 - - 10.8 49.0% 11.5 52.3% - - - - New Al Khoud-F2-P047 22.0 22.0 - - 12.6 57.1% 13.4 60.9% - - - - * New Al Khoud – P047 is having split feeder source arrangement with Feeder 1 connected from Seeb B Grid and Feeder 2 connected from Seeb A Grid. By 2019, both the incoming feeders will be connected from one source i.e. Seeb A grid.

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

Mawaleh South -A Grid Network Results Primary Substations Peak Demand 2017 2018 2019 2020 Primary Substation P.No. MW MVAr MW MVAr MW MVAr MW MVAr Al Hail North 2 P028 21.5 9.0 17.0 5.6 17.6 5.8 18.2 6.0 Mawaleh North P069 4.2 2.1 ------Mawaleh South Grid GP05 23.7 10.2 19.4 6.4 17.7 5.8 19.2 6.3 City Centre P073 16.1 7.8 ------Mawaleh C P072 19.7 4.0 16.1 3.3 17.4 3.5 18.9 3.8 Al Hail North 1 P027 21.5 9.2 ------Al Khoud PH-3 P048 19.2 2.0 21.3 2.2 17.1 1.7 19.0 1.9 Rusail B P101 14.8 6.4 ------Royal Flight P100 7.1 3.9 7.1 2.3 7.1 2.3 7.1 2.3 Percentage Loading of Primary Substations Firm Capacity(MVA) Load'2017 Load'2018 Load'2019 Load'2020 Primary P.No. N-1 N-1 N-1 N-1 2017 2018 2019 2020 MVA % MVA % MVA % MVA % Spare Spare Spare Spare Al Hail North 2 P028 20.0 20.0 20.0 20.0 23.3 116.5 -3.3 17.9 89.7 2.1 18.5 92.6 1.5 19.1 95.7 0.9 Mawaleh North P069 20.0 - - - 4.7 23.5 15.3 ------Mawaleh South Grid GP05 20.0 20.0 20.0 20.0 25.8 128.8 -5.8 20.4 102.0 -0.4 18.7 93.4 1.3 20.2 101.1 -0.2 City Centre P073 20.0 - - - 17.9 89.5 2.1 ------Mawaleh C P072 20.0 20.0 20.0 20.0 20.1 100.5 -0.1 16.4 82.1 3.6 17.8 88.9 2.2 19.2 96.2 0.8 Al Hail North 1 P027 20.0 - - - 23.4 117.2 -3.4 ------Al Khoud PH-3 P048 20.0 20.0 20.0 20.0 19.3 96.5 0.7 21.5 107.3 -1.5 17.2 85.8 2.8 19.1 95.4 0.9 Rusail B P101 10.0 - - - 16.1 161.4 -6.1 ------Royal Flight P100 20.0 20.0 20.0 20.0 8.1 40.5 11.9 7.5 37.4 12.5 7.5 37.4 12.5 7.5 37.4 12.5 Primary Substations Bus Voltages 2017 2018 2019 2020 Primary P.No. 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) Al Hail North 1-A P027 98.8 99.4 ------Al Hail North 1-B P027 99.2 101.1 ------Al Hail North 2-A P028 99.3 100.3 100.5 103.1 100.5 103.1 100.3 102.8 Al Hail North 2-B P028 99.3 100.3 100.4 103.1 100.5 103.1 100.3 102.8 Al Khoud PH-3-A P048 100.0 103.4 100.8 104.5 101.0 104.9 100.8 104.6 Al Khoud PH-3-B P048 100.0 103.4 100.8 104.4 101.0 104.9 100.8 104.6 City Centre-A P073 99.8 101.4 ------City Centre-B P073 99.8 101.4 ------Mawaleh C-A P072 100.0 102.7 100.9 104.3 100.9 104.3 100.8 103.9 Mawaleh C-B P072 100.0 102.7 100.9 104.3 100.9 104.3 100.8 103.9 Mawaleh North-A P069 100.1 103.9 ------Mawaleh North-B P069 100.1 103.9 ------Mawaleh South Grid-A GP05 100.2 101.1 101.0 103.6 101.1 103.9 101.0 103.6 Mawaleh South Grid-B GP05 100.2 101.1 101.0 103.6 101.1 103.9 101.0 103.6 Royal Flight-A P100 99.9 103.1 100.9 104.9 101.0 105.0 100.8 104.8 Royal Flight-B P100 99.9 103.1 100.9 104.9 101.0 105.0 100.8 104.8 Rusail B-A P101 99.6 96.5 ------Rusail B-B P101 - 96.5 ------

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

Primary Substation 3-Phase Fault Current Levels 33kV -Rated SC Capacity(kA) 11kV -Rated SC Capacity(kA) 2017 2018 2019 2020 Primary P.No. 2017 2018 2019 2020 2017 2018 2019 2020 33kV 11kV 33kV 11kV 33kV 11kV 33kV 11kV Al Hail North 1-A P027 25.0 - - - 20.0 - - - 10.4 8.4 ------Al Hail North 1-B P027 25.0 - - - 20.0 - - - 10.3 7.9 ------Al Hail North 2-A P028 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 13.0 8.0 12.6 13.9 12.5 14.0 12.6 14.1 Al Hail North 2-B P028 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 13.0 8.0 12.6 13.9 12.5 14.0 12.6 14.1 Al Khoud PH-3-A P048 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 18.7 15.0 17.4 8.3 17.3 14.5 17.5 14.7 Al Khoud PH-3-B P048 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 18.7 15.0 17.4 8.2 17.3 14.5 17.5 14.7 City Centre-A P073 25.0 - - - 20.0 - - - 17.2 14.6 ------City Centre-B P073 25.0 - - - 20.0 - - - 17.2 14.6 ------Mawaleh C-A P072 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 19.1 8.2 17.8 14.4 17.7 14.5 17.9 14.7 Mawaleh C-B P072 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 19.1 8.2 17.8 14.4 17.7 14.5 17.9 14.7 Mawaleh North-A P069 25.0 - - - 18.4 - - - 20.5 13.7 ------Mawaleh North-B P069 25.0 - - - 18.4 - - - 20.4 13.7 ------Mawaleh South Grid-A* GP05 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 25.8 9.5 23.5 9.1 23.2 16.1 23.5 9.1 Mawaleh South Grid-B* GP05 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 25.8 9.5 23.5 9.1 23.2 16.1 23.5 9.1 Royal Flight-A P100 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 14.3 13.5 13.5 13.2 13.5 13.2 13.6 13.2 Royal Flight-B P100 25.0 25.0 25.0 25.0 18.4 18.4 18.4 18.4 14.3 13.5 13.5 13.2 13.5 13.2 13.6 13.2 Rusail B-A P101 25.0 - - - 25.0 - - - 17.3 12.9 ------Rusail B-B P101 - - - - 25.0 - - - - 12.9 ------33kV Feeder Loads Circuit Rating(MVA) 2017 2018 2019 2020 Primary 2017 2018 2019 2020 MVA %Loading MVA %Loading MVA %Loading MVA %Loading Al Hail North 1-A-P027 15.4 - - - 14.3 92.8% ------Al Hail North 1-B-P027 15.4 - - - 10.0 64.8% ------Al Hail North 2-A-P028 22.0 22.0 22.0 22.0 11.8 53.7% 9.0 40.7% 9.3 42.1% 9.6 43.5% Al Hail North 2-B-P028 22.0 22.0 22.0 22.0 11.9 54.3% 9.0 41.1% 9.3 42.5% 9.7 43.9% Al Khoud PH-3-A-P048 22.0 22.0 22.0 22.0 9.8 44.4% 10.7 48.7% 8.7 39.4% 9.6 43.8% Al Khoud PH-3-B-P048 22.0 22.0 22.0 22.0 9.7 44.0% 10.9 49.7% 8.6 39.1% 9.6 43.5% City Centre-A-P073 22.0 - - - 9.1 41.3% ------City Centre-B-P073 22.0 - - - 9.1 41.4% ------Mawaleh C-A-P072 22.0 22.0 22.0 22.0 10.2 46.4% 8.3 37.9% 9.0 41.1% 9.8 44.6% Mawaleh C-B-P072 22.0 22.0 22.0 22.0 10.3 46.7% 8.3 37.8% 9.0 41.0% 9.8 44.5% Mawaleh North-A-P069 22.0 - - - 2.3 10.4% ------Mawaleh North-B-P069 22.0 - - - 2.3 10.5% ------Mawaleh South Grid-B-GP05 22.0 22.0 22.0 22.0 13.4 60.7% 10.4 47.5% 9.5 43.3% 10.3 47.0% Mawaleh South Grid-A-GP05 22.0 22.0 22.0 22.0 13.4 60.7% 10.4 47.4% 9.5 43.3% 10.3 47.0% Royal Flight-A-P100 22.0 22.0 22.0 22.0 3.9 17.5% 3.6 16.4% 3.6 16.4% 3.6 16.4% Royal Flight-B-P100 22.0 22.0 22.0 22.0 3.9 17.5% 3.6 16.5% 3.6 16.5% 3.6 16.5% Rusail B-A-P101 22.0 - - - 16.6 75.5% ------* Mawaleh South Grid-GP05 - The 33kV fault levels on this primary substation are slightly higher than the rated capacity in 2017. But from 2018 onwards, the fault levels are calculated to be within the limits bacause of reduction in motor infeed at 11kV due to load shifting.

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

Mawaleh South -B Grid Network Results Primary Substations Peak Demand 2017 2018 2019 2020 Primary Substation P.No. MW MVAr MW MVAr MW MVAr MW MVAr Mawaleh A * P070 43.2 16.1 46.8 15.4 45.2 14.9 - - Mawaleh B * P071 28.1 12.1 30.4 10.0 38.4 12.6 - - Al Khoud PH-6 P049 26.6 8.7 20.7 6.8 14.1 4.6 15.7 5.2 Al Hail South 1 P030 24.1 9.8 24.9 8.2 19.5 6.4 20.2 6.6 Mawaleh South05 P148 - - 27.5 9.0 33.1 10.9 35.8 11.8 Percentage Loading of Primary Substations Firm Capacity(MVA) Load'2017 Load'2018 Load'2019 Load'2020 Primary P.No. N-1 N-1 N-1 N-1 2017 2018 2019 2020 MVA % MVA % MVA % MVA % Spare Spare Spare Spare Mawaleh A * P070 40.0 40.0 40.0 - 46.1 115.3 -6.1 49.2 123.1 -9.2 47.6 119.1 -7.6 - - - Mawaleh B * P071 40.0 40.0 40.0 - 30.6 76.5 9.4 32.0 80.1 8.0 40.4 101.0 -0.4 - - - Al Khoud PH-6 P049 20.0 20.0 20.0 20.0 28.0 140.0 -8.0 21.8 108.8 -1.8 14.8 74.2 5.2 16.5 82.5 3.5 Al Hail South 1 P030 20.0 20.0 20.0 20.0 26.0 130.0 -6.0 26.2 131.0 -6.2 20.5 102.7 -0.5 21.2 106.1 -1.2 Mawaleh South05 P148 - 40.0 40.0 40.0 - - - 29.0 72.5 11.0 34.8 87.0 5.2 37.7 94.2 2.3 Primary Substations Bus Voltages 2017 2018 2019 2020 Primary P.No. 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) AL Hail South 1-A P030 99.3 99.1 99.3 99.7 99.5 100.9 99.5 100.7 AL Hail South 1-B P030 99.5 100.9 99.6 101.3 99.7 102.1 99.6 102.0 Al Khoud PH-6-A P049 98.6 98.7 99.0 100.2 99.4 102.1 99.3 101.8 Al Khoud PH-6-B P049 99.0 100.3 99.2 101.4 99.4 102.1 99.3 101.8 Mawaleh A-A P070 99.6 99.9 99.6 99.9 99.6 100.1 - - Mawaleh A-B P070 99.9 101.2 99.9 101.2 99.9 101.4 - - Mawaleh A-C P070 99.9 100.1 99.9 100.2 99.9 100.3 - - Mawaleh B-A P071 100.0 101.0 100.0 101.5 100.0 100.5 - - Mawaleh B-B P071 100.0 101.0 100.0 101.5 100.0 100.5 - - Mawaleh B-C P071 100.0 103.2 100.0 103.4 100.0 103.1 - - Mawaleh South 5-A P148 - - 100.0 101.9 99.8 101.4 99.8 101.1 Mawaleh South 5-B P148 - - 100.0 101.9 99.8 101.4 99.8 101.1 Mawaleh South 5-C P148 - - 100.0 101.9 99.8 101.4 99.8 101.1 Primary Substation 3-Phase Fault Current Levels 33kV -Rated SC Capacity(kA) 11kV -Rated SC Capacity(kA) 2017 2018 2019 2020 Primary P.No. 2017 2018 2019 2020 2017 2018 2019 2020 33kV 11kV 33kV 11kV 33kV 11kV 33kV 11kV AL Hail South 1-A P030 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 16.3 8.6 16.7 8.6 16.6 8.3 15.6 8.2 AL Hail South 1-B P030 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 16.2 8.1 16.6 8.1 16.5 7.9 15.6 7.9 Al Khoud PH-6-A P049 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 11.7 8.2 11.8 7.8 12.1 13.6 11.6 13.6 Al Khoud PH-6-B P049 25.0 25.0 25.0 25.0 20.0 20.0 20.0 20.0 11.6 7.9 11.8 7.7 12.1 13.6 11.6 13.6 Mawaleh A-A P070 25.0 25.0 25.0 - 18.4 18.4 18.4 - 18.8 9.4 19.3 9.6 19.2 9.5 - - Mawaleh A-B P070 25.0 25.0 25.0 - 18.4 18.4 18.4 - 23.3 9.4 24.1 9.6 23.9 9.5 - - Mawaleh A-C P070 25.0 25.0 25.0 - 25.0 25.0 25.0 - 24.1 10.2 25.0 10.3 24.8 10.3 - - Mawaleh B-A P071 25.0 25.0 25.0 - 18.4 18.4 18.4 - 20.8 16.8 21.4 17.0 21.4 17.7 - - Mawaleh B-B P071 25.0 25.0 25.0 - 18.4 18.4 18.4 - 20.7 16.8 21.4 17.0 21.3 17.7 - - Mawaleh B-C P071 25.0 25.0 25.0 - 25.0 25.0 25.0 - 20.6 8.8 21.2 8.9 21.1 9.0 - - Mawaleh South 5-A P148 - 25.0 25.0 25.0 - 25.0 25.0 25.0 - - 22.1 8.3 22.0 15.5 20.3 15.4 Mawaleh South 5-B P148 - 25.0 25.0 25.0 - 25.0 25.0 25.0 - - 22.1 8.3 22.0 15.5 20.3 15.4 Mawaleh South 5-C P148 - 25.0 25.0 25.0 - 25.0 25.0 25.0 - - 22.1 8.3 22.0 8.5 20.3 8.5

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

33kV Feeder Loads Circuit Rating(MVA) 2017 2018 2019 2020 Primary 2017 2018 2019 2020 MVA %Loading MVA %Loading MVA %Loading MVA %Loading AL Hail South 1-A-P030 22.0 22.0 22.0 22.0 16.1 73.0% 16.1 73.1% 12.5 56.7% 12.9 58.6% AL Hail South 1-B-P030 22.0 22.0 22.0 22.0 11.0 50.1% 11.1 50.3% 8.6 39.2% 8.9 40.5% Al Khoud PH-6-A-P049 22.0 22.0 22.0 22.0 16.5 75.1% 12.6 57.3% 7.3 33.2% 8.2 37.1% Al Khoud PH-6-B-P049 22.0 22.0 22.0 22.0 12.4 56.3% 9.5 43.2% 7.4 33.8% 8.3 37.8% Mawaleh A-A-P070 22.0 22.0 22.0 - 16.8 76.5% 18.0 81.7% 17.4 78.9% - - Mawaleh A-B-P070 22.0 22.0 22.0 - 13.3 60.4% 14.2 64.5% 13.7 62.3% - - Mawaleh A-C-P070 22.0 22.0 22.0 - 17.9 81.5% 19.1 87.0% 18.5 84.0% - - Mawaleh B-A-P071 22.0 22.0 22.0 - 13.0 59.2% 13.6 61.7% 17.3 78.5% - - Mawaleh B-B-P071 22.0 22.0 22.0 - 13.3 60.4% 13.8 62.9% 17.6 80.0% - - Mawaleh B-C-P071 22.0 22.0 22.0 - 5.3 24.3% 5.6 25.3% 7.0 32.0% - - Mawaleh South 5-A-P148 - 22.0 22.0 22.0 - - 9.9 44.8% 11.9 54.2% 12.9 58.8% Mawaleh South 5-B-P148 - 22.0 22.0 22.0 - - 9.9 45.0% 11.9 54.3% 13.0 59.0% Mawaleh South 5-C-P148 - 22.0 22.0 22.0 - - 9.9 44.8% 11.9 54.2% 12.9 58.8% * Mawaleh A – P070 and Mawaleh B – P071 are having split feeder source arrangement with their Feeders 1&3 for each primary connected from Mawaleh South B Grid and Feeder 2 for each from Mawaleh South A grid. By 2020, By 2019, all the incoming feeders for both primaries will be connected from one source i.e. Al Khoudh Grid.

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

Al Khoudh Grid Network Results Primary Substations Peak Demand 2017 2018 2019 2020 Primary Substation P.No. MW MVAr MW MVAr MW MVAr MW MVAr Mawaleh A P070 ------49.0 16.1 Mawaleh B P071 ------41.5 13.7 SQU 1 P122 ------21.2 13.1 Percentage Loading of Primary Substations Firm Capacity(MVA) Load'2017 Load'2018 Load'2019 Load'2020 Primary P.No. N-1 N-1 N-1 N-1 2017 2018 2019 2020 MVA % MVA % MVA % MVA % Spare Spare Spare Spare Mawaleh A P070 - - - 40.0 ------51.6 128.9 -11.6 Mawaleh B P071 - - - 40.0 ------43.7 109.3 -3.7 SQU 1 P122 - - - 32.0 ------24.9 77.8 7.1 Primary Substations Bus Voltages 2017 2018 2019 2020 Primary P.No. 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) Mawaleh A-A P070 ------100.1 100.2 Mawaleh A-B P070 ------100.4 101.7 Mawaleh A-C P070 ------100.4 100.5 Mawaleh B-A P071 ------100.2 99.6 Mawaleh B-B P071 ------100.3 101.1 Mawaleh B-C P071 ------100.4 103.4 SQU 1-A P122 ------100.1 101.2 SQU 1-B P122 ------100.1 101.2 SQU 1-C P122 ------100.1 101.3 Primary Substation 3-Phase Fault Current Levels 33kV -Rated SC Capacity(kA) 11kV -Rated SC Capacity(kA) 2017 2018 2019 2020 Primary P.No. 2017 2018 2019 2020 2017 2018 2019 2020 33kV 11kV 33kV 11kV 33kV 11kV 33kV 11kV Mawaleh A-A P070 - - - 25.0 - - - 18.4 ------18.7 9.6 Mawaleh A-B P070 - - - 25.0 - - - 18.4 ------23.1 9.6 Mawaleh A-C P070 - - - 25.0 - - - 25.0 ------24.0 10.4 Mawaleh B-A P071 - - - 25.0 - - - 18.4 ------20.7 9.9 Mawaleh B-B P071 - - - 25.0 - - - 18.4 ------20.6 9.6 Mawaleh B-C P071 - - - 25.0 - - - 25.0 ------20.5 9.0 SQU 1-A P122 - - - 25.0 - - - 18.4 ------15.8 13.7 SQU 1-B P122 - - - 25.0 - - - 18.4 ------15.8 13.7 SQU 1-C P122 - - - 25.0 - - - 18.4 ------15.6 7.4 33kV Feeder Loads Circuit Rating(MVA) 2017 2018 2019 2020 Primary 2017 2018 2019 2020 MVA %Loading MVA %Loading MVA %Loading MVA %Loading Mawaleh A-A-P070 - - - 22.0 ------18.9 85.8% Mawaleh A-B-P070 - - - 22.0 ------14.9 67.6% Mawaleh A-C-P070 - - - 22.0 ------20.1 91.3% Mawaleh B-A-P071 - - - 22.0 ------21.4 97.3% Mawaleh B-B-P071 - - - 22.0 ------16.5 75.1% Mawaleh B-C-P071 - - - 22.0 ------7.6 34.5% SQU 1-A-P122-Pvt - - - 22.0 ------8.7 39.5% SQU 1-B-P122-Pvt - - - 22.0 ------8.7 39.5% SQU 1-C-P122-Pvt - - - 22.0 ------8.5 38.4%

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

Mawaleh North Grid Network Results Primary Substations Peak Demand 2017 2018 2019 2020 Primary Substation P.No. MW MVAr MW MVAr MW MVAr MW MVAr Al Hail North 1 P027 - - 17.1 5.6 17.6 5.8 18.2 6.0 Mawaleh North P069 - - 14.7 4.8 15.1 5.0 15.6 5.1 Mawaleh North Grid GP01 27.5 12.4 ------Mawaleh North GP01 - - 27.5 9.0 27.5 9.0 27.5 9.0 Grid[re-configure] City Centre P073 - - 17.4 5.7 18.9 6.2 20.4 6.7 Percentage Loading of Primary Substations Firm Capacity(MVA) Load'2017 Load'2018 Load'2019 Load'2020 Primary P.No. N-1 N-1 N-1 N-1 2017 2018 2019 2020 MVA % MVA % MVA % MVA % Spare Spare Spare Spare Al Hail North 1 P027 - 20.0 20.0 20.0 - - - 18.0 89.9 2.0 18.6 92.9 1.4 19.2 95.9 0.8 Mawaleh North P069 - 20.0 20.0 20.0 - - - 15.4 77.2 4.6 15.9 79.7 4.1 16.5 82.3 3.5 Mawaleh North Grid GP01 100.0 - - - 30.2 30.2 69.8 ------Mawaleh North GP01 - 40.0 40.0 40.0 - - - 29.0 72.4 11.0 29.0 72.4 11.0 29.0 72.4 11.0 Grid[re-configure] City Centre P073 20.0 20.0 20.0 20.0 - - - 18.4 91.8 1.6 19.9 99.4 0.1 21.5 107.6 -1.5 Primary Substations Bus Voltages 2017 2018 2019 2020 Primary P.No. 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) 33kV (%) 11kV(%) Al Hail North 1-A P027 - - 100.3 102.9 100.2 102.7 100.1 102.5 Al Hail North 1-B P027 - - 100.3 102.9 100.2 102.7 100.1 102.5 City Centre-A P073 - - 100.3 102.6 100.2 102.2 100.0 101.8 City Centre-B P073 - - 100.3 102.6 100.2 102.2 100.1 101.9 Mawaleh North-A P069 - - 100.4 103.1 100.3 103.0 100.2 102.8 Mawaleh North-B P069 - - 100.4 103.1 100.3 103.0 100.2 102.8 Mawaleh North Grid-A GP01 - 105.2 100.4 102.6 100.3 102.5 100.2 102.3 Mawaleh North Grid-B GP01 - 105.2 100.4 102.6 100.3 102.5 100.2 102.3 Mawaleh North Grid-C GP01 - 105.2 100.4 102.6 100.3 102.5 100.2 102.3 Primary Substation 3-Phase Fault Current Levels 33kV -Rated SC Capacity(kA) 11kV -Rated SC Capacity(kA) 2017 2018 2019 2020 Primary P.No. 2017 2018 2019 2020 2017 2018 2019 2020 33kV 11kV 33kV 11kV 33kV 11kV 33kV 11kV Al Hail North 1-A P027 - 25.0 25.0 25.0 - 20.0 20.0 20.0 - - 17.9 15.6 17.9 15.6 18.0 15.7 Al Hail North 1-B P027 - 25.0 25.0 25.0 - 20.0 20.0 20.0 - - 17.9 15.6 17.9 15.6 18.0 15.7 City Centre-A P073 - 25.0 25.0 25.0 - 20.0 20.0 20.0 - - 17.8 14.5 17.8 14.7 17.8 8.2 City Centre-B P073 - 25.0 25.0 25.0 - 20.0 20.0 20.0 - - 17.8 14.5 17.8 14.7 17.8 8.2 Mawaleh North-A P069 - 25.0 25.0 25.0 - 18.4 18.4 18.4 - - 20.7 14.6 20.7 14.6 20.8 14.7 Mawaleh North-B P069 - 25.0 25.0 25.0 - 18.4 18.4 18.4 - - 20.7 14.6 20.7 14.6 20.8 14.7 Mawaleh North Grid-A GP01 - 31.5 31.5 31.5 31.5 - 26.8 20.8 17.1 20.8 17.1 20.9 17.1 Mawaleh North Grid-B GP01 - 31.5 31.5 31.5 31.5 - 26.8 20.8 9.4 20.8 9.4 20.9 9.4 Mawaleh North Grid-C GP01 - 31.5 31.5 31.5 31.5 - 26.8 20.8 17.1 20.8 17.1 20.9 17.1

MEDC Distribution Capability Statement (2018-2020)-V2.2 Muscat Electricity Distribution Company S.A.O.C

33kV Feeder Loads Circuit Rating(MVA) 2017 2018 2019 2020 Primary 2017 2018 2019 2020 MVA %Loading MVA %Loading MVA %Loading MVA %Loading Al Hail North 1-F1-P027 - 22.0 22.0 22.0 - - 9.3 42.1% 9.6 43.6% 9.9 45.0% Al Hail North 1-F2-P027 - 22.0 22.0 22.0 - - 9.1 41.3% 9.4 42.7% 9.7 44.1% City Centre-F1-P073 - 22.0 22.0 22.0 - - 9.3 42.4% 10.1 46.0% 11.2 50.8% City Centre-F2-P073 - 22.0 22.0 22.0 - - 9.3 42.4% 10.1 46.1% 10.8 49.2% Mawaleh North-F1-P069 - 22.0 22.0 22.0 - - 7.8 35.6% 8.1 36.8% 8.4 38.1% Mawaleh North-F2-P069 - 22.0 22.0 22.0 - - 7.9 35.8% 8.1 37.0% 8.4 38.2% Mawaleh North Grid-F1-GP01 - 22.0 22.0 22.0 - - 9.9 45.0% 9.9 45.0% 9.9 45.0% Mawaleh North Grid-F2-GP01 - 22.0 22.0 22.0 - - 9.9 44.9% 9.9 44.9% 9.9 44.9% Mawaleh North Grid F3-GP01 - 22.0 22.0 22.0 - - 9.9 44.9% 9.9 44.9% 9.9 44.9%

MEDC Distribution Capability Statement (2018-2020)-V2.2