Average grid demand for this UK day.
On 21 June 2026, Britain’s electricity grid averaged 27.73 GW of grid demand, with renewables averaging 43.3% of tracked domestic generation and carbon intensity averaging 174 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 June 2026, Britain’s electricity grid averaged 27.73 GW of grid demand, with renewables averaging 43.3% of tracked domestic generation and carbon intensity averaging 174 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.
Daily insight
On 21 June 2026, Britain’s electricity grid averaged 27.73 GW of grid demand, with renewables averaging 43.3% of tracked domestic generation and carbon intensity averaging 174 gCO₂/kWh.
The highest demand period was 31.78 GW at 18:00, while the lowest carbon intensity period was 127 gCO₂/kWh at 07:30.
Daily chart
Generation mix