Average grid demand for this UK day.
On 29 December 2025, Britain’s electricity grid averaged 34.51 GW of grid demand, with renewables averaging 38.2% of tracked domestic generation and carbon intensity averaging 190 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 29 December 2025, Britain’s electricity grid averaged 34.51 GW of grid demand, with renewables averaging 38.2% of tracked domestic generation and carbon intensity averaging 190 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.
Daily insight
On 29 December 2025, Britain’s electricity grid averaged 34.51 GW of grid demand, with renewables averaging 38.2% of tracked domestic generation and carbon intensity averaging 190 gCO₂/kWh.
The highest demand period was 43.34 GW at 17:00, while the lowest carbon intensity period was 115 gCO₂/kWh at 23:30.
Daily chart
Generation mix