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Daily UK grid report
UK Electricity Grid Daily Report — 26 May 2025

On 26 May 2025, Britain’s electricity grid averaged 30.55 GW of grid demand, with renewables averaging 70.9% of tracked domestic generation and carbon intensity averaging 49 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 30.55 GW

Average grid demand for this UK day.

Peak demand 35.02 GW

Highest 15-minute grid demand period.

Avg carbon 49 gCO₂/kWh

Average carbon intensity where available.

Renewables 70.9 %

Average renewable share of tracked generation.

Average grid demandDemand
30.55 GWFull-day average from available snapshots
↑ +0.13 GW vs yesterday
Peak demand13:00
35.02 GWHighest 15-minute grid demand period
↓ −2.21 GW vs yesterday
Lowest demand04:30
25.56 GWLowest 15-minute grid demand period
↑ +1.32 GW vs yesterday
Domestic generationSupply
29.38 GWTracked UK generation sources only
↓ −0.27 GW vs yesterday
Average carbonCO₂
49 gCO₂/kWhCarbon intensity average
↓ −3 g vs yesterday
Renewable shareClean
70.9 %Wind, solar, hydro and biomass
No change vs yesterday
Clean share+ Nuclear
87.7 %Renewables plus nuclear
No change vs yesterday
Net importsFlow
-3.05 GWAverage imports minus exports
↑ +0.33 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 26 May 2025, Britain’s electricity grid averaged 30.55 GW of grid demand, with renewables averaging 70.9% of tracked domestic generation and carbon intensity averaging 49 gCO₂/kWh.

The highest demand period was 35.02 GW at 13:00, while the lowest carbon intensity period was 34 gCO₂/kWh at 09:30.

Key records for 26 May 2025

Highest wind18.31 GW13:30
Highest solar7.80 GW11:00
Highest gas4.58 GW19:00
Lowest carbon34 gCO₂/kWh09:30
Highest imports3.90 GW17:45
Highest exports6.83 GW06:45

Daily chart

Demand, generation and carbon intensity

26 May 2025

Generation mix

Wind, solar, gas and interconnector flow