Average grid demand for this UK day.
On 21 October 2025, Britain’s electricity grid averaged 32.16 GW of grid demand, with renewables averaging 59.4% of tracked domestic generation and carbon intensity averaging 101 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.
Average grid demand for this UK day.
Highest 15-minute grid demand period.
Average carbon intensity where available.
Average renewable share of tracked generation.
Live Grid Data UK
On 21 October 2025, Britain’s electricity grid averaged 32.16 GW of grid demand, with renewables averaging 59.4% of tracked domestic generation and carbon intensity averaging 101 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.
Daily insight
On 21 October 2025, Britain’s electricity grid averaged 32.16 GW of grid demand, with renewables averaging 59.4% of tracked domestic generation and carbon intensity averaging 101 gCO₂/kWh.
The highest demand period was 39.53 GW at 18:30, while the lowest carbon intensity period was 54 gCO₂/kWh at 22:30.
Daily chart
Generation mix