South Africa's electricity mix in April 2025
In April 2025 South Africa's grid generated 17 646.4 GWh, of which coal supplied 79.4%. Demand averaged 23 889 MW and peaked at 30 243 MW on 23 April 2025.
Where the electricity came from
| Source | GWh | Share |
|---|---|---|
| Coal | 14 002.7 | 79.4% |
| Wind | 707.9 | 4.0% |
| Nuclear | 682.4 | 3.9% |
| Imports | 627.1 | 3.6% |
| Diesel peakers | 460.0 | 2.6% |
| Hydro | 375.9 | 2.1% |
| Pumped storage | 357.1 | 2.0% |
| Solar PV | 339.7 | 1.9% |
| Concentrated solar | 87.1 | 0.5% |
| Other renewables | 4.5 | 0.0% |
| Gas | 2.1 | 0.0% |
| Total supply | 17 646.4 | 100% |
Load shedding in April 2025
Eskom shed 8 GWh of demand across 8 hours, affecting 1 of the 30 days in the month. The heaviest single day was 24 April 2025, when 8.2 GWh was shed. Separately, contracted industrial customers on interruptible supply were curtailed by 8.9 GWh. That is demand management, not load shedding.
How this month compared
Carbon intensity averaged 845 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 6.4% of generation.
Figures are calculated from Eskom's published hourly data. Rooftop solar sits behind the meter and is not included.