South Africa's electricity mix in June 2022
In June 2022 South Africa's grid generated 19 579.6 GWh, of which coal supplied 80.9%. Demand averaged 27 165 MW and peaked at 34 666 MW on 23 June 2022.
Where the electricity came from
| Source | GWh | Share |
|---|---|---|
| Coal | 15 831.1 | 80.9% |
| Imports | 918.3 | 4.7% |
| Wind | 817.5 | 4.2% |
| Nuclear | 655.0 | 3.3% |
| Diesel peakers | 434.4 | 2.2% |
| Pumped storage | 399.9 | 2.0% |
| Solar PV | 297.5 | 1.5% |
| Hydro | 149.5 | 0.8% |
| Concentrated solar | 56.7 | 0.3% |
| Other renewables | 19.5 | 0.1% |
| Gas | 0.3 | 0.0% |
| Total supply | 19 579.6 | 100% |
Load shedding in June 2022
Eskom shed 481 GWh of demand across 186 hours, affecting 11 of the 30 days in the month. The heaviest single day was 30 June 2022, when 80.1 GWh was shed. Separately, contracted industrial customers on interruptible supply were curtailed by 5.1 GWh. That is demand management, not load shedding.
How this month compared
Carbon intensity averaged 859 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 6.0% of generation.
Figures are calculated from Eskom's published hourly data. Rooftop solar sits behind the meter and is not included.