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Daily UK grid report
UK Electricity Grid Daily Report — 13 May 2025

On 13 May 2025, Britain’s electricity grid averaged 30.07 GW of grid demand, with renewables averaging 50.9% of tracked domestic generation and carbon intensity averaging 110 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 30.07 GW

Average grid demand for this UK day.

Peak demand 35.63 GW

Highest 15-minute grid demand period.

Avg carbon 110 gCO₂/kWh

Average carbon intensity where available.

Renewables 50.9 %

Average renewable share of tracked generation.

Average grid demandDemand
30.07 GWFull-day average from available snapshots
↑ +0.13 GW vs yesterday
Peak demand12:00
35.63 GWHighest 15-minute grid demand period
↓ −1.17 GW vs yesterday
Lowest demand04:30
23.00 GWLowest 15-minute grid demand period
↑ +1.34 GW vs yesterday
Domestic generationSupply
24.91 GWTracked UK generation sources only
↑ +0.36 GW vs yesterday
Average carbonCO₂
110 gCO₂/kWhCarbon intensity average
↑ +4 g vs yesterday
Renewable shareClean
50.9 %Wind, solar, hydro and biomass
↓ −3.0 pts vs yesterday
Clean share+ Nuclear
70.1 %Renewables plus nuclear
↓ −1.6 pts vs yesterday
Net importsFlow
3.87 GWAverage imports minus exports
↓ −0.20 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 13 May 2025, Britain’s electricity grid averaged 30.07 GW of grid demand, with renewables averaging 50.9% of tracked domestic generation and carbon intensity averaging 110 gCO₂/kWh.

The highest demand period was 35.63 GW at 12:00, while the lowest carbon intensity period was 62 gCO₂/kWh at 13:30.

Key records for 13 May 2025

Highest wind7.56 GW00:00
Highest solar13.32 GW12:00
Highest gas10.16 GW21:00
Lowest carbon62 gCO₂/kWh13:30
Highest imports5.84 GW16:00
Highest exports2.51 GW20:00

Daily chart

Demand, generation and carbon intensity

13 May 2025

Generation mix

Wind, solar, gas and interconnector flow