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Daily UK grid report
UK Electricity Grid Daily Report — 27 October 2025

On 27 October 2025, Britain’s electricity grid averaged 34.62 GW of grid demand, with renewables averaging 66.6% of tracked domestic generation and carbon intensity averaging 97 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 34.62 GW

Average grid demand for this UK day.

Peak demand 40.66 GW

Highest 15-minute grid demand period.

Avg carbon 97 gCO₂/kWh

Average carbon intensity where available.

Renewables 66.6 %

Average renewable share of tracked generation.

Average grid demandDemand
34.62 GWFull-day average from available snapshots
↑ +2.48 GW vs yesterday
Peak demand09:30
40.66 GWHighest 15-minute grid demand period
↑ +0.98 GW vs yesterday
Lowest demand04:30
27.35 GWLowest 15-minute grid demand period
↑ +1.11 GW vs yesterday
Domestic generationSupply
29.72 GWTracked UK generation sources only
↑ +1.85 GW vs yesterday
Average carbonCO₂
97 gCO₂/kWhCarbon intensity average
↑ +35 g vs yesterday
Renewable shareClean
66.6 %Wind, solar, hydro and biomass
↓ −8.9 pts vs yesterday
Clean share+ Nuclear
79.8 %Renewables plus nuclear
↓ −9.2 pts vs yesterday
Net importsFlow
3.78 GWAverage imports minus exports
↑ +0.22 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 27 October 2025, Britain’s electricity grid averaged 34.62 GW of grid demand, with renewables averaging 66.6% of tracked domestic generation and carbon intensity averaging 97 gCO₂/kWh.

The highest demand period was 40.66 GW at 09:30, while the lowest carbon intensity period was 35 gCO₂/kWh at 03:00.

Key records for 27 October 2025

Highest wind22.36 GW01:00
Highest solar6.55 GW11:00
Highest gas12.87 GW18:00
Lowest carbon35 gCO₂/kWh03:00
Highest imports8.49 GW20:00
Highest exports4.40 GW04:00

Daily chart

Demand, generation and carbon intensity

27 October 2025

Generation mix

Wind, solar, gas and interconnector flow