South Africa's electricity mix in August 2022
In August 2022 South Africa's grid generated 19 897.3 GWh, of which coal supplied 79.5%. Demand averaged 26 294 MW and peaked at 33 517 MW on 3 August 2022.
Where the electricity came from
| Source | GWh | Share |
|---|---|---|
| Coal | 15 825.7 | 79.5% |
| Nuclear | 998.6 | 5.0% |
| Wind | 952.3 | 4.8% |
| Imports | 904.8 | 4.5% |
| Solar PV | 397.1 | 2.0% |
| Pumped storage | 362.3 | 1.8% |
| Diesel peakers | 253.8 | 1.3% |
| Concentrated solar | 114.3 | 0.6% |
| Hydro | 68.8 | 0.3% |
| Other renewables | 18.9 | 0.1% |
| Gas | 0.7 | 0.0% |
| Total supply | 19 897.3 | 100% |
Load shedding in August 2022
Eskom shed 129 GWh of demand across 75 hours, affecting 7 of the 31 days in the month. The heaviest single day was 4 August 2022, when 46.3 GWh was shed. Separately, contracted industrial customers on interruptible supply were curtailed by 5.5 GWh. That is demand management, not load shedding.
How this month compared
Carbon intensity averaged 838 grams of CO₂ per kilowatt-hour, against a world average of 458 g/kWh in 2025 and an Africa average of about 530 g/kWh. Renewables (wind, solar PV, CSP and other renewables reporting to Eskom) supplied 7.4% of generation.
Figures are calculated from Eskom's published hourly data. Rooftop solar sits behind the meter and is not included.