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Daily UK grid report
UK Electricity Grid Daily Report — 25 May 2025

On 25 May 2025, Britain’s electricity grid averaged 30.42 GW of grid demand, with renewables averaging 70.9% of tracked domestic generation and carbon intensity averaging 52 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 30.42 GW

Average grid demand for this UK day.

Peak demand 37.24 GW

Highest 15-minute grid demand period.

Avg carbon 52 gCO₂/kWh

Average carbon intensity where available.

Renewables 70.9 %

Average renewable share of tracked generation.

Average grid demandDemand
30.42 GWFull-day average from available snapshots
↑ +3.00 GW vs yesterday
Peak demand13:30
37.24 GWHighest 15-minute grid demand period
↑ +4.75 GW vs yesterday
Lowest demand02:45
24.24 GWLowest 15-minute grid demand period
↑ +2.62 GW vs yesterday
Domestic generationSupply
29.65 GWTracked UK generation sources only
↑ +5.49 GW vs yesterday
Average carbonCO₂
52 gCO₂/kWhCarbon intensity average
↓ −1 g vs yesterday
Renewable shareClean
70.9 %Wind, solar, hydro and biomass
↑ +5.2 pts vs yesterday
Clean share+ Nuclear
87.7 %Renewables plus nuclear
↑ +1.4 pts vs yesterday
Net importsFlow
-3.38 GWAverage imports minus exports
↓ −5.67 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 25 May 2025, Britain’s electricity grid averaged 30.42 GW of grid demand, with renewables averaging 70.9% of tracked domestic generation and carbon intensity averaging 52 gCO₂/kWh.

The highest demand period was 37.24 GW at 13:30, while the lowest carbon intensity period was 30 gCO₂/kWh at 13:30.

Key records for 25 May 2025

Highest wind17.48 GW23:30
Highest solar11.87 GW13:30
Highest gas4.74 GW20:30
Lowest carbon30 gCO₂/kWh13:30
Highest imports2.70 GW18:15
Highest exports6.44 GW08:00

Daily chart

Demand, generation and carbon intensity

25 May 2025

Generation mix

Wind, solar, gas and interconnector flow