Average grid demand for this UK day.
On 4 September 2025, Britain’s electricity grid averaged 30.75 GW of grid demand, with renewables averaging 54.4% of tracked domestic generation and carbon intensity averaging 117 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 4 September 2025, Britain’s electricity grid averaged 30.75 GW of grid demand, with renewables averaging 54.4% of tracked domestic generation and carbon intensity averaging 117 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.
Daily insight
On 4 September 2025, Britain’s electricity grid averaged 30.75 GW of grid demand, with renewables averaging 54.4% of tracked domestic generation and carbon intensity averaging 117 gCO₂/kWh.
The highest demand period was 36.32 GW at 13:15, while the lowest carbon intensity period was 59 gCO₂/kWh at 00:00.
Daily chart
Generation mix