Live mix › Data › January 2025
South Africa's electricity mix in January 2025
In January 2025 South Africa's grid generated 18 139.4 GWh, of which coal supplied 75.7%. Demand averaged 23 849 MW and peaked at 28 739 MW on 28 January 2025.
Where the electricity came from
| Source | GWh | Share |
|---|---|---|
| Coal | 13 726.8 | 75.7% |
| Nuclear | 1 256.5 | 6.9% |
| Wind | 947.1 | 5.2% |
| Imports | 594.8 | 3.3% |
| Solar PV | 539.5 | 3.0% |
| Diesel peakers | 483.4 | 2.7% |
| Pumped storage | 340.2 | 1.9% |
| Concentrated solar | 169.7 | 0.9% |
| Hydro | 58.2 | 0.3% |
| Other renewables | 22.0 | 0.1% |
| Gas | 1.2 | 0.0% |
| Total supply | 18 139.4 | 100% |
Load shedding in January 2025
Eskom shed 12 GWh of demand across 7 hours, affecting 1 of the 31 days in the month. The heaviest single day was 31 January 2025, when 12.3 GWh was shed. Separately, contracted industrial customers on interruptible supply were curtailed by 7.2 GWh. That is demand management, not load shedding.
How this month compared
Carbon intensity averaged 808 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 9.1% of generation.
Figures are calculated from Eskom's published hourly data. Rooftop solar sits behind the meter and is not included.