Eskom Holdings SOC Ltd Reg No 2002/015527/30 Page 1 of 5

Weekly System Status Report – 2020 Week 2 (06/01/2020 – 12/01/2020)

Introduction This document is intended to provide a general picture of the Adequacy of the National Electricity Supply System in the medium term. The Report will be updated weekly, on Tuesdays and circulated Wednesdays, thereafter, published on the Eskom website, updated on Wednesdays. The values contained in this report are unverified and not official yet and can change at any time. Disclaimer The Data published here is for information purposes only. The content is subject to verification and validation. Eskom shall not be held responsible for any errors or it being misleading or incomplete and accepts no liability whatsoever for any loss, damages or expenses, howsoever, incurred or suffered, resulting or arising, from the use of this Data or any reliance placed on it. Historic Daily Peak System Capacity/Demand

DateAvailable

Dispatchable Generation (MW)

Non-commercial Generation (MW)

Residual Load Forecast (MW)

Actual Residual Demand (MW) Incl

IOS

Operating Reserve Margin (Excl Non-Commercial Units)

Operating Reserve Margin (Incl Non-

Commercial Units)

Forecast vs. Actual (Residual Demand)

Mon 06/Jan/2020 30,407 806 27,057 27,035 12.5% 15.5% 0.1%Tue 07/Jan/2020 29,796 687 27,351 27,753 7.4% 9.8% -1.4%Wed 08/Jan/2020 28,629 1,420 27,851 27,839 2.8% 7.9% 0.0%Thu 09/Jan/2020 30,371 956 28,443 28,276 7.4% 10.8% 0.6%Fri 10/Jan/2020 30,337 1,319 27,398 27,246 11.3% 16.2% 0.6%Sat 11/Jan/2020 30,318 1,359 26,837 26,672 13.7% 18.8% 0.6%

Sun 12/Jan/2020 30,761 1,012 26,416 25,989 18.4% 22.3% 1.6%

DateTotal Available Generation Incl

Renewables (MW)

Non-commercial Generation (MW)

RSA Contracted

Load Forecast (MW)

Actual RSA Contracted Demand

(MW) Incl IOS

Operating Reserve Margin (Excl Non-Commercial Units)

Operating Reserve Margin (Incl Non-

Commercial Units)

Forecast vs. Actual (RSA Contracted

Demand)

Mon 06/Jan/2020 31,756 806 28,474 28,383 11.9% 14.7% 0.3%Tue 07/Jan/2020 30,786 687 28,648 28,743 7.1% 9.5% -0.3%Wed 08/Jan/2020 29,749 1,420 28,873 28,959 2.7% 7.6% -0.3%Thu 09/Jan/2020 31,933 956 29,871 29,837 7.0% 10.2% 0.1%Fri 10/Jan/2020 33,341 1,377 29,640 29,526 12.9% 17.6% 0.4%Sat 11/Jan/2020 31,602 1,359 28,183 27,956 13.0% 17.9% 0.8%

Sun 12/Jan/2020 32,374 1,012 27,824 27,602 17.3% 21.0% 0.8% Notes: 1. Available Dispatchable Generation means all generation resources that can be dispatched by Eskom and includes capacity available from all

emergency generation resources.

2. RSA Contracted Load Forecast is the total official day-ahead hourly forecast. Residual Load Forecast excludes the expected generation from renewables.

3. Actual Residual Demand is the aggregated metered hourly sent-out generation and imports from dispatchable resources, and includes demand reductions. The Actual RSA Contracted Demand includes renewable generation.

4. Net Maximum Dispatchable Capacity (including imports and emergency generation resources) = 48 522 MW (Incl. non-comm. Kusile units).

5. These figures do not include any demand side products.

6. The peak hours for the residual demand can differ from that of the RSA contracted demand, depending on renewable generation.

Eskom Holdings SOC Ltd Reg No 2002/015527/30 Page 2 of 5

Week-on-Week Dispatchable Generation Energy Sent Out [2020 weeks compared to similar 2019 weeks]

Energy Sent Out 4,024 GWhWeek-on-Week Growth -1.03 %

Year-on-Year Growth (Year-to-Date) Annual -1.59 %Note:2020 Weeks are compared to similar weeks in 2019.(2020 week 1 ~ 2019 week 1)

Week 2 : Dispatchable Generation Energy Sent Out Statistics

Year 01 Jan to 12 Jan Energy Annual Energy (01 Jan to 31 Dec) Unit2015 7,188 229,552 GWh2016 7,002 226,721 GWh2017 6,898 225,203 GWh2018 6,844 224,202 GWh2019 6,689 219,573 GWh

2020 (YTD) 6,610 GWh

Annual Dispatchable Generation Energy Sent Out Statistics

Week-on-Week Residual Energy Demand [2020 weeks compared to similar 2019 weeks]

Energy Demand 4,105 GWhWeek-on-Week Growth 0.91 %

Year-on-Year Growth (Year-to-Date) Annual -0.28 %Note:2020 Weeks are compared to similar weeks in 2019.(2020 week 1 ~ 2019 week 1)

Week 2 : Residual Energy Demand Statistics (Incl IOS)

Year 01 Jan to 12 Jan Energy Annual Energy (01 Jan to 31 Dec) Unit2015 7,202 231,154 GWh2016 7,005 226,808 GWh2017 6,899 225,248 GWh2018 6,846 224,594 GWh2019 6,694 220,935 GWh

2020 (YTD) 6,718 GWh

Annual Residual Energy Demand Statistics (Incl IOS)

Week-on-Week RSA Contracted Energy Demand [2020 weeks compared to similar 2019 weeks]

Energy Demand 4,335 GWhWeek-on-Week Growth 0.41 %

Year-on-Year Growth (Year-to-Date) Annual -0.76 %Note:2020 Weeks are compared to similar weeks in 2019.(2020 week 1 ~ 2019 week 1)

Week 2 : RSA Contracted Energy Demand Statistics (Incl IOS)

Year 01 Jan to 12 Jan Energy Annual Energy (01 Jan to 31 Dec) Unit2015 7,424 239,545 GWh2016 7,357 238,069 GWh2017 7,343 235,426 GWh2018 7,283 235,482 GWh2019 7,146 232,522 GWh

2020 (YTD) 7,125 GWh

Annual RSA Contracted Energy Demand Statistics (Incl IOS)

Eskom Holdings SOC Ltd Reg No 2002/015527/30 Page 3 of 5

Week-on-Week Dispatchable Generation Peak Demand [2020 weeks compared to similar 2019 weeks]

Peak Demand 27,379 MWWeek-on-Week Growth -2.43 %

Year-on-Year Growth (Year-to-Date) Annual -2.43 %Note:2020 Weeks are compared to similar weeks in 2019.(2020 week 1 ~ 2019 week 1)

Week 2 : Dispatchable Generation Peak Demand Statistics

Year Peak Date Annual Peak Unit2015 Tue 28-Jul-2015 33,343 MW2016 Thu 04-Aug-2016 34,181 MW2017 Tue 30-May-2017 35,457 MW2018 Mon 16-Jul-2018 34,256 MW2019 Thu 30-May-2019 33,066 MW

2020 (YTD) Tue 07-Jan-2020 27,379 MW

Annual Dispatchable Generation Peak Demand Statistics

Week-on-Week Residual Peak Demand [2020 weeks compared to similar 2019 weeks]

Peak Demand 28,276 MWWeek-on-Week Growth 0.77 %

Year-on-Year Growth (Year-to-Date) Annual 0.77 %Note:2020 Weeks are compared to similar weeks in 2019.(2020 week 1 ~ 2019 week 1)

Week 2 : Residual Peak Demand Statistics (Incl IOS)

Year Peak Date Annual Peak Unit2015 Thu 11-Jun-2015 34,145 MW2016 Thu 07-Jul-2016 34,488 MW2017 Tue 30-May-2017 35,517 MW2018 Tue 29-May-2018 34,907 MW2019 Thu 30-May-2019 33,746 MW

2020 (YTD) Thu 09-Jan-2020 28,276 MW

Annual Residual Peak Demand Statistics (Incl IOS)

Week-on-Week RSA Contracted Peak Demand [2020 weeks compared to similar 2019 weeks]

Peak Demand 29,837 MWWeek-on-Week Growth 1.02 %

Year-on-Year Growth (Year-to-Date) Annual 1.02 %Note:2020 Weeks are compared to similar weeks in 2019.(2020 week 1 ~ 2019 week 1)

Week 2 : RSA Contracted Peak Demand Statistics (Incl IOS)

Year Peak Date Annual Peak Unit2015 Thu 11-Jun-2015 34,499 MW2016 Mon 30-May-2016 34,913 MW2017 Tue 30-May-2017 35,769 MW2018 Tue 29-May-2018 35,345 MW2019 Thu 30-May-2019 34,510 MW

2020 (YTD) Thu 09-Jan-2020 29,837 MW

Annual RSA Contracted Peak Demand Statistics (Incl IOS)

Eskom Holdings SOC Ltd Reg No 2002/015527/30 Page 4 of 5

Risk Level Description

Green Adequate Generation to meet Demand and Reserves.Yellow < 1 000MW Possibly short to meet Reserves

Orange 1 001MW – 2 000MW Definitively short to meet Reserves and possibly Demand

Red > 2 001MW Short to meet Demand and Reserves

MW MW MW MW MW MW MW MWWeek Start Week RSA

Contracted Forecast

Residual Forecast

Available Dispatchable

Capacity

Available Capacity (Less

OR and UA)

Planned Maintenance

Unplanned Outage

Assumption (UA)

Planned Risk Level

(-11700 MW)

Likely Risk Senario

(-13700 MW)13-Jan-20 3 30226 28614 44590 32890 3932 9500 4276 227620-Jan-20 4 30435 28699 42941 31241 5581 9500 2542 54227-Jan-20 5 30355 28675 43033 31333 5489 9500 2658 65803-Feb-20 6 30968 29725 42897 31197 5625 9500 1472 -52810-Feb-20 7 31058 29815 43482 31782 5040 9500 1966 -3417-Feb-20 8 30736 29493 43444 31744 5078 9500 2250 25024-Feb-20 9 30974 29731 43184 31484 5338 9500 1753 -24702-Mar-20 10 31096 29869 43739 32039 4783 9500 2169 16909-Mar-20 11 31093 29866 41944 30244 6578 9500 377 -162316-Mar-20 12 30893 29666 42965 31265 5557 9500 1599 -40123-Mar-20 13 30921 29590 43956 32256 4566 9500 2665 66530-Mar-20 14 31016 29736 41684 29984 6838 9500 247 -175306-Apr-20 15 31245 30194 40853 29153 7669 9500 -1041 -304113-Apr-20 16 31832 30781 42154 30454 6368 9500 -327 -2327

Weekly Generation Availability

41 42 43 44 45 46 47 48 49 50 51 52 1 2 YTD 2019

Energy Availability Factor (Eskom EAF) 67.69 65.37 67.77 68.09 65.85 66.29 65.11 66.10 63.01 59.27 60.04 57.47 56.78 61.37 59.93 66.89

Planned Outage Factor 9.04 6.96 8.18 9.19 7.86 10.16 11.93 11.80 11.16 10.24 9.45 12.34 11.38 9.65 9.96 9.93

Unplanned Outage Factor 21.45 26.01 21.63 21.04 24.76 21.68 21.02 20.16 24.28 27.54 27.94 28.23 29.76 26.47 27.74 21.54

Other Outage Factor 1.82 1.66 2.42 1.68 1.53 1.87 1.94 1.94 1.55 2.95 2.57 1.96 2.08 2.51 2.37 1.64

Criterion measured in percentageWeek Annual (Jan - Dec)

EAF: Ratio of the available energy generation over a given time period to the maximum amount of energy which could be produced over the same time period. Outage Factors: Ratio of energy losses over a given time period to the maximum amount of energy which could be produced over the same time period. YTD: Year-to-Date (01 January of current year to current week) Three Month Outlook This is the forecast demand vs. available generating capacity for each week for 3 months ahead. Colour codes ranging from Green (no shortage) to Red (worst case) are used to indicate the absence or presence of a capacity constraint.

Notes - Assumptions critical: The maintenance plan included in these assumptions includes a base scenario of outages (planned risk level). As there is opportunity for further outages, these will be included. This “likely risk scenario” includes an additional 2000 MW of outages on the base plan. The expected imports at Apollo is included. Avon and Dedisa is also included. The forecast used is the latest operational weekly residual peak forecast, which excludes the expected renewable generation. Operating Reserve (OR) from Generation: 2 200 MW Unplanned Outage Assumption (UA): 9 500 MW Reserves: OR + UA = 11 700 MW Eskom Installed Capacity: 47 517 MW (Incl. non-comm. Kusile units). Installed Dispatchable Capacity: 48 522 MW (Incl. Avon and Dedisa). Key:

Medium Term Peak Demand/Capacity Forecast Please go to the link below for the Medium-term System Adequacy Outlook - 2020 to 2024. Download the Medium-Term System Adequacy Outlook 2020 to 2024 (Published 30 October 2019).

Eskom Holdings SOC Ltd Reg No 2002/015527/30 Page 5 of 5

500.01,514.22,079.84,117.7

Current Installed Capacity (MW)CSPPV

Wind (Eskom+IPP)Total (Incl other REs)

Renewable Energy Statistics Note: Times are expressed as hour beginning

Cal Year Indicator CSP PV Wind (Eskom+IPP) Total (Incl other REs)

Maximum 502.1 1,432.5 1,902.3 3,530.6

Max Date 24-Sep-2019 11:00 27-Oct-2017 12:00 02-Oct-2018 16:00 27-Oct-2019 13:00

Maximum 200.9 1,350.5 1,229.8 2,576.3

Max Date 11-Aug-2016 14:00 16-Dec-2016 12:00 23-Dec-2016 13:00 23-Dec-2016 13:00

Maximum 302.0 1,432.5 1,708.2 3,142.7

Max Date 07-Nov-2017 10:00 27-Oct-2017 12:00 25-Dec-2017 18:00 13-Dec-2017 13:00

Maximum 399.7 1,392.1 1,902.3 3,298.9

Max Date 04-Dec-2018 16:00 03-Oct-2018 12:00 02-Oct-2018 16:00 28-Sep-2018 11:00

Maximum 502.1 1,375.6 1,872.0 3,530.6

Max Date 24-Sep-2019 11:00 19-Jan-2019 12:00 14-Dec-2019 15:00 27-Oct-2019 13:00

Maximum Contribution (MW) - based on System Operator data (subject to metering verification)

All Time

2016

2017

2018

2019

Cal Year Indicator CSP PV Wind (Eskom+IPP) Total (Incl other REs)

Annual Energy Contribution (MWh) - based on System Operator data (subject to metering verification)

All Time

Maximum

Annual

Energy1,557,151 3,324,989 6,624,642 11,586,945

6,951,2612016Total

Energy529,522 2,630,141 3,730,771

2017Total

Energy687,703 3,324,857 5,081,023 9,198,632

10,887,9022018Total

Energy1,031,288 3,282,124 6,467,095

2019Total

Energy1,557,151 3,324,989 6,624,642 11,586,945

Cal Year Indicator Total (Incl other REs)

Maximum 1,464

Max Date 05-Jul-2019 to 06-Jul-2019

Maximum 828

Max Date 30-Aug-2016 to 31-Aug-2016

Maximum 1,038

Max Date 19-Jun-2017 to 20-Jun-2017

Maximum 1,336

Max Date 01-Sep-2018 to 02-Sep-2018

Maximum 1,464

Max Date 05-Jul-2019 to 06-Jul-2019

Maximum Difference between Consecutive Evening Peaks (MW) -

based on System Operator data (subject to metering verification)

All Time

2016

2017

2018

2019