Weekly System Status Update: Adequacy of National Electricity Supply (Week 47, 2023)
This weekly system status report compiled by the System Operator provides insights into the National Electricity Supply System's adequacy in the medium term. It includes data on historic daily peak system capacity/demand, available dispatchable generation, operating reserve margin, forecast vs. actual demand, and more. The report also compares week-on-week dispatchable generation energy sent out between 2022 and 2023. Check out the details for a comprehensive understanding of the electricity supply system.
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Weekly System Status Compiled by: System Operator 2023 week 47 (20/11/2023 26/11/2023)
Introduction and Disclaimer 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 Available Dispatchable Generation (MW) 27,602 27,312 27,810 27,880 27,318 27,630 26,981 Actual Residual Demand (MW) Incl IOS 27,477 28,191 28,195 27,898 28,298 26,207 26,381 Operating Reserve Margin (Excl Non- Commercial Units) 0.5% -3.1% -1.4% -0.1% -3.5% 5.4% 2.3% Operating Reserve Margin (Incl Non- Commercial Units) 0.5% -3.1% -1.4% -0.1% -3.5% 5.4% 2.3% Non-commercial Generation (MW) Residual Load Forecast (MW) Forecast vs. Actual (Residual Demand) Date Mon 20/Nov/2023 Tue 21/Nov/2023 Wed 22/Nov/2023 Thu 23/Nov/2023 Fri 24/Nov/2023 Sat 25/Nov/2023 Sun 26/Nov/2023 0 0 0 0 0 0 0 27,013 27,762 27,575 28,063 27,206 25,846 25,989 -1.7% -1.5% -2.2% 0.6% -3.9% -1.4% -1.5% RSA Total Available Generation Incl Renewables (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) Non-commercial Generation (MW) Contracted Load Forecast (MW) 29,768 29,674 29,511 30,007 29,160 27,631 27,827 Date Mon 20/Nov/2023 Tue 21/Nov/2023 Wed 22/Nov/2023 Thu 23/Nov/2023 Fri 24/Nov/2023 Sat 25/Nov/2023 Sun 26/Nov/2023 30,148 29,302 29,875 30,034 28,880 29,555 28,671 0 0 0 0 0 0 0 30,023 30,180 30,261 30,052 29,860 28,132 28,071 0.4% -2.9% -1.3% -0.1% -3.3% 5.1% 2.1% 0.4% -2.9% -1.3% -0.1% -3.3% 5.1% 2.1% -0.8% -1.7% -2.5% -0.1% -2.3% -1.8% -0.9% Available Dispatchable Generation means all generation resources that can be dispatched by Eskom and includes capacity available from all emergency generation resources. RSA Contracted Load Forecast is the total official day-ahead hourly forecast. Residual Load Forecast excludes the expected generation from renewables. 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. Net Maximum Dispatchable Capacity (including imports and emergency generation resources) = 49 191 MW. These figures do not include any demand side products. The peak hours for the residual demand can differ from that of the RSA contracted demand, depending on renewable generation.
Week-on-Week Dispatchable Generation Energy Sent Out Week-on-Week (2022 vs 2023): Dispatchable Generation Energy Sent Out. 2023 Weeks are compared to similar weeks in 2022. 2022 Dispatchable Generation Energy 2023 Residual Energy Forecast Week 47 : Dispatchable Generation Energy Sent Out Statistics Energy Sent Out 3,645 GWh 2023 Dispatchable Generation Energy 5,000 Week-on-Week Growth 0.53 % 4,800 Year-on-Year Growth (Year-to-Date) Annual -7.13 % Note: 4,600 2023 Weeks are compared to similar weeks in 2022. (2023 week 1 ~ 2022 week 1) 4,400 Energy Sent Out GWh 4,200 Annual Dispatchable Generation Energy Sent Out Statistics 4,000 Year 01 Jan to 26 Nov Energy Annual Energy (01 Jan to 31 Dec) Unit 3,800 2018 203,992 224,202 GWh 2019 199,991 219,575 GWh 3,600 2020 187,665 206,725 GWh 2021 191,200 210,022 GWh 3,400 2022 185,973 202,845 GWh 3,200 2023 (YTD) 172,732 GWh 3,000 1 2 3 4 5 6 7 8 9 1011121314151617181920212223242526272829303132333435363738394041424344454647484950515253 Week 4
5 Week-on-Week Residual Energy Demand Week-on-Week (2022 vs 2023): Residual Energy Demand. 2023 Weeks are compared to similar weeks in 2022. 2022 Residual Energy (Incl IOS) 2023 Residual Energy Forecast Week 47 : Residual Energy Demand Statistics Energy Demand 4,069 GWh 2023 Residual Energy (Incl IOS) 5,000 Week-on-Week Growth 3.69 % 4,800 Year-on-Year Growth (Year-to-Date) Annual -1.91 % Note: 4,600 2023 Weeks are compared to similar weeks in 2022. (2023 week 1 ~ 2022 week 1) 4,400 Energy Demand GWh 4,200 Annual Residual Energy Demand Statistics 4,000 Year 01 Jan to 26 Nov Energy Annual Energy (01 Jan to 31 Dec) Unit 3,800 2018 204,177 224,594 GWh 2019 200,906 220,937 GWh 3,600 2020 189,039 208,151 GWh 3,400 2021 193,093 211,958 GWh 2022 192,226 211,132 GWh 3,200 2023 (YTD) 188,597 GWh 3,000 1 2 3 4 5 6 7 8 9 1011121314151617181920212223242526272829303132333435363738394041424344454647484950515253 Week
6 Week-on-Week RSA Contracted Energy Demand Week-on-Week (2022 vs 2023): RSA Contracted Energy Demand. 2023 Weeks are compared to similar weeks in 2022. 2022 RSA Contracted Energy (Incl IOS) 2023 RSA Contracted Energy Forecast Week 47 : RSA Contracted Energy Demand Statistics Energy Demand 4,418 GWh 2023 RSA Contracted Energy (Incl IOS) 5,000 Week-on-Week Growth 2.32 % 4,800 Year-on-Year Growth (Year-to-Date) Annual -0.61 % Note: 4,600 2023 Weeks are compared to similar weeks in 2022. (2023 week 1 ~ 2022 week 1) 4,400 Energy Demand GWh 4,200 Annual RSA Contracted Energy Demand Statistics 4,000 Year 01 Jan to 26 Nov Energy Annual Energy (01 Jan to 31 Dec) Unit 3,800 2018 213,863 235,482 GWh 2019 211,250 232,524 GWh 3,600 2020 199,962 220,630 GWh 3,400 2021 206,625 227,166 GWh 2022 206,552 227,335 GWh 3,200 2023 (YTD) 205,348 GWh 3,000 1 2 3 4 5 6 7 8 9 1011121314151617181920212223242526272829303132333435363738394041424344454647484950515253 Week
7 Week-on-Week Dispatchable Generation Peak Demand Week-on-Week (2022 vs 2023): Dispatchable Generation Peak Demand. 2023 Weeks are compared to similar weeks in 2022. 2022 Dispatchable Generation Peak 2023 Residual Peak Forecast Week 47 : Dispatchable Generation Peak Demand Statistics Peak Demand 24,755 MW 2023 Dispatchable Generation Peak 35,000 Week-on-Week Growth -0.69 % 34,000 Year-on-Year Growth (Year-to-Date) Annual -8.88 % 33,000 Note: 32,000 2023 Weeks are compared to similar weeks in 2022. 31,000 (2023 week 1 ~ 2022 week 1) 30,000 29,000 Peak Demand MW 28,000 Annual Dispatchable Generation Peak Demand Statistics 27,000 Year Peak Date Annual Peak Unit 26,000 2018 Mon 16-Jul-2018 34,256 MW 25,000 2019 Thu 30-May-2019 33,066 MW 24,000 2020 Wed 17-Jun-2020 32,384 MW 23,000 2021 Thu 15-Jul-2021 32,292 MW 2022 Thu 02-Jun-2022 31,756 MW 22,000 2023 (YTD) Mon 10-Jul-2023 28,937 MW 21,000 20,000 1 2 3 4 5 6 7 8 9 1011121314151617181920212223242526272829303132333435363738394041424344454647484950515253 Week
8 Week-on-Week Residual Peak Demand Week-on-Week (2022 vs 2023): Residual Peak Demand. 2023 Weeks are compared to similar weeks in 2022. 2022 Residual Peak (Incl IOS) 2023 Residual Peak Forecast Week 47 : Residual Peak Demand Statistics Peak Demand 28,298 MW 2023 Residual Peak (Incl IOS) 35,000 Week-on-Week Growth -1.12 % 34,000 Year-on-Year Growth (Year-to-Date) Annual -0.36 % 33,000 Note: 32,000 2023 Weeks are compared to similar weeks in 2022. 31,000 (2023 week 1 ~ 2022 week 1) 30,000 29,000 Peak Demand MW 28,000 Annual Residual Peak Demand Statistics 27,000 Year Peak Date Annual Peak Unit 26,000 2018 Tue 29-May-2018 34,907 MW 25,000 2019 Thu 30-May-2019 33,746 MW 24,000 2020 Wed 15-Jul-2020 32,756 MW 23,000 2021 Tue 08-Jun-2021 34,029 MW 2022 Thu 23-Jun-2022 33,136 MW 22,000 2023 (YTD) Tue 30-May-2023 33,016 MW 21,000 20,000 1 2 3 4 5 6 7 8 9 1011121314151617181920212223242526272829303132333435363738394041424344454647484950515253 Week
9 Week-on-Week RSA Contracted Peak Demand Week-on-Week (2022 vs 2023): RSA Contracted Peak Demand. 2023 Weeks are compared to similar weeks in 2022. 2022 RSA Contracted Peak (Incl IOS) 2023 RSA Contracted Peak Forecast Week 47 : RSA Contracted Peak Demand Statistics Peak Demand 30,261 MW 2023 RSA Contracted Peak (Incl IOS) 35,000 Week-on-Week Growth 0.48 % 34,000 Year-on-Year Growth (Year-to-Date) Annual -2.29 % 33,000 Note: 32,000 2023 Weeks are compared to similar weeks in 2022. 31,000 (2023 week 1 ~ 2022 week 1) 30,000 29,000 Peak Demand MW 28,000 Annual RSA Contracted Peak Demand Statistics 27,000 Year Peak Date Annual Peak Unit 26,000 2018 Tue 29-May-2018 35,345 MW 25,000 2019 Thu 30-May-2019 34,510 MW 24,000 2020 Tue 01-Sep-2020 34,155 MW 23,000 2021 Thu 22-Jul-2021 35,005 MW 2022 Thu 23-Jun-2022 34,666 MW 22,000 2023 (YTD) Mon 10-Jul-2023 33,873 MW 21,000 20,000 1 2 3 4 5 6 7 8 9 1011121314151617181920212223242526272829303132333435363738394041424344454647484950515253 Week
Weekly Generation Availability Week Annual (Jan - Dec) 34 35 36 37 38 39 40 41 42 43 44 45 46 47 2023 2022 55.11 53.27 52.16 54.16 58.19 56.39 56.91 58.53 60.05 56.08 54.80 55.38 53.37 54.25 Energy Availability Factor (Eskom EAF) 54.80 58.00 10.49 12.87 11.93 10.21 11.21 10.50 11.48 12.36 10.82 10.53 8.70 10.22 11.03 12.29 Planned Outage Factor 10.32 10.62 33.46 33.16 35.12 34.74 29.58 29.98 30.40 27.53 27.89 32.09 35.31 32.80 33.66 31.64 Unplanned Outage Factor 33.54 29.86 0.94 0.70 0.79 0.89 1.02 3.13 1.21 1.58 1.24 1.30 1.19 1.60 1.94 1.82 Other Outage Factor 1.34 1.52 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 the 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)
52 Week Outlook MW RSA MW MW MW MW MW MW MW 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 1500 MW of outages on the base plan. The expected import 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 generation. Operating Reserve (OR) from Generation: 2 200 MW Unplanned Outage 16 000 MW Reserves: OR + UA = 18 200 MW Eskom Installed Capacity: 48 186 MW Installed Dispatchable Capacity: 49 191 MW (Incl. Avon and Dedisa) Week Start Week Residual Forecast Available Dispatchable Capacity 43793 42278 41629 42163 40214 40782 40968 41430 42045 42630 43160 43160 42910 42635 44050 43098 43845 43095 43830 44493 45033 45033 45458 46178 46771 46961 47436 46929 46929 46839 46929 46929 46929 46784 47140 46555 45330 44860 44082 43980 44862 44414 43679 43436 43332 43729 43464 43464 43576 43386 43246 42896 42404 42444 Available Capacity (Less OR and UA) 25593 24078 23429 23963 22014 22582 22768 23230 23845 24430 24960 24960 24710 24435 25850 24898 25645 24895 25630 26293 26833 26833 27258 27978 28571 28761 29236 28729 28729 28639 28729 28729 28729 28584 28940 28355 27130 26660 25882 25780 26662 26214 25479 25236 25132 25529 25264 25264 25376 25186 25046 24696 24204 24244 Planned Maintenance Unplanned Outage Assumption (UA) 16000 16000 16000 16000 16000 16000 16000 16000 16000 16000 16000 16000 16000 16000 16000 16000 16000 16000 16000 16000 16000 16000 16000 16000 16000 16000 16000 16000 16000 16000 16000 16000 16000 16000 16000 16000 16000 16000 16000 16000 16000 16000 16000 16000 16000 16000 16000 16000 16000 16000 16000 16000 16000 16000 Planned Risk Level (-18200 MW) -2530 -3364 -3601 -2264 -1805 -3296 -3918 -3930 -3473 -3193 -2916 -3010 -3197 -4042 -3109 -4108 -3162 -3824 -3991 -3842 -3651 -4036 -3619 -3717 -3767 -3846 -3896 -3773 -3881 -3866 -3988 -3571 -3913 -3830 -3783 -3613 -4318 -4244 -4916 -4547 -4128 -4513 -4641 -4570 -4818 -4330 -4344 -4353 -4070 -4206 -4278 -4109 -4367 -4342 Likely Risk Senario (-20200 MW) -4530 -5364 -5601 -4264 -3805 -5296 -5918 -5930 -5473 -5193 -4916 -5010 -5197 -6042 -5109 -6108 -5162 -5824 -5991 -5842 -5651 -6036 -5619 -5717 -5767 -5846 -5896 -5773 -5881 -5866 -5988 -5571 -5913 -5830 -5783 -5613 -6318 -6244 -6916 -6547 -6128 -6513 -6641 -6570 -6818 -6330 -6344 -6353 -6070 -6206 -6278 -6109 -6367 -6342 Contracted Forecast 30314 29961 29212 28409 26001 28022 28829 29303 29461 29764 29965 30059 29996 30567 30918 30966 30790 30764 31169 31684 32032 32418 32233 33030 33673 33942 34467 34299 34408 34302 34515 33834 34176 33948 34257 33502 33064 32520 32414 31943 32674 32611 32005 31690 32088 31996 31738 31706 31535 31459 31391 30872 30639 30769 28123 27441 27030 26227 23818 25878 26685 27159 27317 27623 27875 27969 27906 28477 28958 29006 28807 28719 29620 30135 30483 30869 30877 31695 32338 32607 33131 32501 32610 32504 32717 32299 32642 32413 32722 31968 31447 30903 30798 30327 30789 30726 30120 29805 29950 29858 29608 29617 29446 29392 29323 28804 28571 28586 5397 6913 7562 7028 8977 8409 8223 7761 7146 6561 6031 6031 6281 6556 5141 6093 5346 6096 5361 4698 4158 4158 3733 3013 2420 2230 1755 2262 2262 2352 2262 2262 2262 2407 2051 2636 3861 4331 5109 5211 4329 4777 5512 5755 5859 5462 5727 5727 5615 5805 5945 6295 6787 6747 27-Nov-23 04-Dec-23 11-Dec-23 18-Dec-23 25-Dec-23 01-Jan-24 08-Jan-24 15-Jan-24 22-Jan-24 29-Jan-24 05-Feb-24 12-Feb-24 19-Feb-24 26-Feb-24 04-Mar-24 11-Mar-24 18-Mar-24 25-Mar-24 01-Apr-24 08-Apr-24 15-Apr-24 22-Apr-24 29-Apr-24 06-May-24 13-May-24 20-May-24 27-May-24 03-Jun-24 10-Jun-24 17-Jun-24 24-Jun-24 01-Jul-24 08-Jul-24 15-Jul-24 22-Jul-24 29-Jul-24 05-Aug-24 12-Aug-24 19-Aug-24 26-Aug-24 02-Sep-24 09-Sep-24 16-Sep-24 23-Sep-24 30-Sep-24 07-Oct-24 14-Oct-24 21-Oct-24 28-Oct-24 04-Nov-24 11-Nov-24 18-Nov-24 25-Nov-24 02-Dec-24 48 49 50 51 52 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 renewable Assumption (UA): Risk Level Green Yellow Orange Red Description Adequate Generation to meet Demand and Reserves. < 1 000MW Possibly short to meet Reserves 1 001MW 2 000MW Definitively short to meet Reserves and possibly Demand > 2 001MW Short to meet Demand and Reserves
Renewable Energy Statistics Note: Times are expressed as hour beginning Maximum Difference between Consecutive Evening Peaks (MW) - based on System Operator data (subject to metering verification) Maximum Contribution (MW) - based on System Operator data (subject to metering verification) Cal Year Indicator Maximum Max Date Maximum Max Date Maximum Max Date Maximum Max Date Maximum Max Date Maximum Max Date Maximum Max Date Maximum Max Date Maximum Max Date CSP 506.2 PV Wind (Eskom+IPP) Total (Incl other REs) 3,102.2 25-Aug-2023 20:00 1,229.8 23-Dec-2016 13:00 1,708.2 25-Dec-2017 18:00 1,902.3 02-Oct-2018 16:00 1,872.0 14-Dec-2019 15:00 2,113.9 01-Dec-2020 19:00 2,639.3 15-Dec-2021 17:00 3,028.1 02-Dec-2022 16:00 3,102.2 25-Aug-2023 20:00 Cal Year Indicator Maximum Max Date Maximum Max Date Maximum Max Date Maximum Max Date Maximum Max Date Maximum Max Date Maximum Max Date Maximum Max Date Maximum Max Date Total (Incl other REs) 2,148 20-Apr-2023 to 21-Apr-2023 828 30-Aug-2016 to 31-Aug-2016 1,038 19-Jun-2017 to 20-Jun-2017 1,336 01-Sep-2018 to 02-Sep-2018 1,464 05-Jul-2019 to 06-Jul-2019 1,488 31-Aug-2020 to 01-Sep-2020 1,744 07-Aug-2021 to 08-Aug-2021 1,523 07-Aug-2022 to 08-Aug-2022 2,148 20-Apr-2023 to 21-Apr-2023 2,099.5 5,134.5 All Time All Time 15-Mar-2022 15:00 200.9 11-Aug-2016 14:00 302.0 07-Nov-2017 10:00 399.7 04-Dec-2018 16:00 502.1 24-Sep-2019 11:00 504.5 25-Nov-2020 12:00 504.9 30-Nov-2021 16:00 506.2 15-Mar-2022 15:00 505.8 21-Feb-2023 13:00 24-Oct-2021 12:00 1,350.5 16-Dec-2016 12:00 1,432.5 27-Oct-2017 12:00 1,392.1 03-Oct-2018 12:00 1,375.6 19-Jan-2019 12:00 1,929.2 25-Nov-2020 12:00 2,099.5 24-Oct-2021 12:00 2,048.8 20-Nov-2022 11:00 2,044.1 21-Feb-2023 12:00 15-Sep-2023 13:00 2,576.3 23-Dec-2016 13:00 3,142.7 13-Dec-2017 13:00 3,298.9 28-Sep-2018 11:00 3,530.6 27-Oct-2019 13:00 4,050.0 24-Nov-2020 13:00 4,784.7 01-Nov-2021 13:00 5,126.1 05-Sep-2022 12:00 5,134.5 15-Sep-2023 13:00 Current Installed Capacity (MW) CSP PV Wind (Eskom+IPP) Total (Incl other REs) Estimated Rooftop PV 2016 2016 500.0 2,287.1 3,442.6 6,280.2 5,005.0 2017 2017 2018 2018 2019 2019 2020 2020 2021 2021 2022 2022 2023 2023 Maximum proportion that Renewables contributed towards actual hourly energy supplied (%) - based on System Operator data (subject to metering verification) Annual Energy Contribution (MWh) - based on System Operator data (subject to metering verification) Cal Year All Time Maximum Indicator Annual Energy Total Energy Total Energy Total Energy Total Energy Total Energy Total Energy Total Energy Total Energy CSP PV Wind (Eskom+IPP) Total (Incl other REs) Cal Year Indicator Maximum Max Date Maximum Max Date Maximum Max Date Maximum Max Date Maximum Max Date Maximum Max Date Maximum Max Date Maximum Max Date Maximum Max Date Total (Incl other REs) 21.8% 20-Feb-2023 15:00 9.8% 23-Dec-2016 13:00 12.7% 25-Dec-2017 15:00 13.1% 01-Jan-2018 14:00 13.9% 14-Dec-2019 14:00 16.1% 27-Dec-2020 15:00 19.1% 01-Nov-2021 13:00 19.3% 05-Sep-2022 12:00 21.8% 20-Feb-2023 15:00 1,656,017 5,069,146 10,562,428 16,533,278 All Time 2016 529,522 2,630,141 3,730,771 6,951,261 2016 2017 687,703 3,324,857 5,081,023 9,198,632 2017 2018 1,031,288 3,282,124 6,467,095 10,887,902 2018 2019 1,557,151 3,324,989 6,624,642 11,586,945 2019 2020 1,626,049 4,140,212 6,625,830 12,478,704 2020 2021 1,656,017 5,069,146 8,359,224 15,208,327 2021 2022 1,448,276 4,844,736 9,692,373 16,202,974 2022 2023 1,221,215 4,520,120 10,562,428 16,533,278 2023
Estimated Rooftop PV Current Installed Capacity (MW) CSP PV Wind (Eskom+IPP) Total (Incl other REs) Estimated Rooftop PV Maximum/Installed Rooftop PV (MW): Eastern Cape Free StateGautengKwaZulu- LimpopoMpumal Northern Cape North- West Western Cape 500.0 2,287.1 3,442.6 6,280.2 5,005.0 Total Natal anga Oct-23 Sep-23 Aug-23 Jul-23 Jun-23 May-23 Apr-23 Mar-23 Feb-23 Jan-23 Dec-22 Nov-22 Oct-22 Sep-22 Aug-22 Jul-22 368.2 368.2 368.2 368.2 284.3 190 163.2 163.2 163.2 143.1 130.2 130.2 130.2 130.2 130.2 130.2 280.2 1,207.80 280.2 1,207.80 280.2 1,207.80 280.2 1,207.80 280.2 1,207.80 204.9 1,072.10 160.5 160.5 160.5 160.5 160.3 160.3 160.3 160.3 160.3 148.8 810.9 810.9 810.9 810.9 565.8 565.8 417.5 417.5 417.5 417.5 368.7 368.7 296.9 296.9 296.9 296.9 413.3 413.3 345.6 296.6 296.6 296.6 226.8 189.8 189.8 189.8 189.8 189.8 189.8 189.8 189.8 189.8 509.3 476.6 474.1 450.7 450.7 450.7 326.7 317.9 305.6 298.8 298.8 298.8 298.8 298.8 298.8 298.8 129.5 129.5 129.5 129.5 129.5 129.5 117.5 117.5 117.5 82.6 82 79.1 79.1 79.1 79.1 79.1 669.3 669.3 669.3 669.3 669.3 669.3 669.3 669.3 669.3 669.3 310.4 184.8 184.8 184.8 184.8 184.8 616.8 527.4 527.4 527.4 527.4 457.9 369 289.7 198 198 198 161.9 150 145.5 145.5 145.5 5,005.00 4,883.00 4,812.80 4,740.40 4,411.50 4,036.80 3,368.00 3,242.80 3,138.80 3,077.10 2,586.40 2,421.90 2,338.10 2,333.60 2,333.60 2,264.50 917.5 917.5 917.5 917.5 848.3 848.3 848.3 848.3 848.3 790.6 If there is a big jump from month to month it is mainly due to the high number of cloudy days during the latter month, not necessarily due to the number of installations in that month. It would very likely have been distributed in the preceding few months.
