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Daily UK grid report
UK Electricity Grid Daily Report — 31 July 2025

On 31 July 2025, Britain’s electricity grid averaged 29.49 GW of grid demand, with renewables averaging 52.3% of tracked domestic generation and carbon intensity averaging 113 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 29.49 GW

Average grid demand for this UK day.

Peak demand 34.85 GW

Highest 15-minute grid demand period.

Avg carbon 113 gCO₂/kWh

Average carbon intensity where available.

Renewables 52.3 %

Average renewable share of tracked generation.

Average grid demandDemand
29.49 GWFull-day average from available snapshots
↑ +0.39 GW vs yesterday
Peak demand12:00
34.85 GWHighest 15-minute grid demand period
↑ +0.79 GW vs yesterday
Lowest demand04:00
22.85 GWLowest 15-minute grid demand period
↑ +0.61 GW vs yesterday
Domestic generationSupply
23.67 GWTracked UK generation sources only
↑ +1.03 GW vs yesterday
Average carbonCO₂
113 gCO₂/kWhCarbon intensity average
↓ −30 g vs yesterday
Renewable shareClean
52.3 %Wind, solar, hydro and biomass
↑ +9.9 pts vs yesterday
Clean share+ Nuclear
70.1 %Renewables plus nuclear
↑ +9.0 pts vs yesterday
Net importsFlow
4.35 GWAverage imports minus exports
↓ −0.65 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 31 July 2025, Britain’s electricity grid averaged 29.49 GW of grid demand, with renewables averaging 52.3% of tracked domestic generation and carbon intensity averaging 113 gCO₂/kWh.

The highest demand period was 34.85 GW at 12:00, while the lowest carbon intensity period was 76 gCO₂/kWh at 14:30.

Key records for 31 July 2025

Highest wind8.06 GW17:00
Highest solar7.90 GW14:30
Highest gas9.88 GW19:30
Lowest carbon76 gCO₂/kWh14:30
Highest imports7.82 GW10:00
Highest exports3.45 GW05:00

Daily chart

Demand, generation and carbon intensity

31 July 2025

Generation mix

Wind, solar, gas and interconnector flow