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Daily UK grid report
UK Electricity Grid Daily Report — 11 May 2025

On 11 May 2025, Britain’s electricity grid averaged 27.12 GW of grid demand, with renewables averaging 61.9% of tracked domestic generation and carbon intensity averaging 72 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 27.12 GW

Average grid demand for this UK day.

Peak demand 32.49 GW

Highest 15-minute grid demand period.

Avg carbon 72 gCO₂/kWh

Average carbon intensity where available.

Renewables 61.9 %

Average renewable share of tracked generation.

Average grid demandDemand
27.12 GWFull-day average from available snapshots
↓ −0.13 GW vs yesterday
Peak demand12:45
32.49 GWHighest 15-minute grid demand period
↑ +0.62 GW vs yesterday
Lowest demand05:30
20.43 GWLowest 15-minute grid demand period
↓ −1.44 GW vs yesterday
Domestic generationSupply
21.35 GWTracked UK generation sources only
No change vs yesterday
Average carbonCO₂
72 gCO₂/kWhCarbon intensity average
↓ −17 g vs yesterday
Renewable shareClean
61.9 %Wind, solar, hydro and biomass
↑ +4.0 pts vs yesterday
Clean share+ Nuclear
80.8 %Renewables plus nuclear
↑ +4.5 pts vs yesterday
Net importsFlow
4.59 GWAverage imports minus exports
↓ −0.08 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 11 May 2025, Britain’s electricity grid averaged 27.12 GW of grid demand, with renewables averaging 61.9% of tracked domestic generation and carbon intensity averaging 72 gCO₂/kWh.

The highest demand period was 32.49 GW at 12:45, while the lowest carbon intensity period was 47 gCO₂/kWh at 12:00.

Key records for 11 May 2025

Highest wind9.65 GW18:30
Highest solar12.53 GW12:00
Highest gas6.27 GW19:00
Lowest carbon47 gCO₂/kWh12:00
Highest imports7.05 GW09:00
Highest exports2.34 GW14:00

Daily chart

Demand, generation and carbon intensity

11 May 2025

Generation mix

Wind, solar, gas and interconnector flow