South Africa's electricity mix in April 2023
In April 2023 South Africa's grid generated 16 853.2 GWh, of which coal supplied 77.9%. Demand averaged 25 615 MW and peaked at 32 240 MW on 20 April 2023.
Where the electricity came from
| Source | GWh | Share |
|---|---|---|
| Coal | 13 127.1 | 77.9% |
| Imports | 824.4 | 4.9% |
| Wind | 761.1 | 4.5% |
| Nuclear | 604.9 | 3.6% |
| Diesel peakers | 470.0 | 2.8% |
| Solar PV | 408.6 | 2.4% |
| Pumped storage | 285.9 | 1.7% |
| Hydro | 219.4 | 1.3% |
| Concentrated solar | 128.3 | 0.8% |
| Other renewables | 23.3 | 0.1% |
| Gas | 0.2 | 0.0% |
| Total supply | 16 853.2 | 100% |
Load shedding in April 2023
Eskom shed 1 971 GWh of demand across 692 hours, affecting 30 of the 30 days in the month. The heaviest single day was 14 April 2023, when 109.4 GWh was shed. Separately, contracted industrial customers on interruptible supply were curtailed by 8.1 GWh. That is demand management, not load shedding.
How this month compared
Carbon intensity averaged 832 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 7.7% of generation.
Figures are calculated from Eskom's published hourly data. Rooftop solar sits behind the meter and is not included.