South Africa's electricity mix in July 2025
In July 2025 South Africa's grid generated 19 440.2 GWh, of which coal supplied 82.2%. Demand averaged 25 500 MW and peaked at 31 902 MW on 7 July 2025.
Total generated19 440.2GWh
Peak demand31 902MW
Renewables share8.0%
Carbon intensity864g/kWh
Unplanned outages12 161MW avg
Load shedding0GWh
Where the electricity came from
| Source | GWh | Share |
|---|---|---|
| Coal | 15 971.5 | 82.2% |
| Wind | 1 140.2 | 5.9% |
| Nuclear | 700.8 | 3.6% |
| Imports | 543.6 | 2.8% |
| Pumped storage | 363.8 | 1.9% |
| Solar PV | 335.4 | 1.7% |
| Diesel peakers | 203.6 | 1.0% |
| Hydro | 85.5 | 0.4% |
| Concentrated solar | 63.4 | 0.3% |
| Other renewables | 31.8 | 0.2% |
| Gas | 0.5 | 0.0% |
| Total supply | 19 440.2 | 100% |
Load shedding in July 2025
There was no load shedding in July 2025. 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 864 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 8.0% of generation.
Figures are calculated from Eskom's published hourly data. Rooftop solar sits behind the meter and is not included.