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Daily UK grid report
UK Electricity Grid Daily Report — 1 September 2025

On 1 September 2025, Britain’s electricity grid averaged 32.28 GW of grid demand, with renewables averaging 70.3% of tracked domestic generation and carbon intensity averaging 64 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 32.28 GW

Average grid demand for this UK day.

Peak demand 39.22 GW

Highest 15-minute grid demand period.

Avg carbon 64 gCO₂/kWh

Average carbon intensity where available.

Renewables 70.3 %

Average renewable share of tracked generation.

Average grid demandDemand
32.28 GWFull-day average from available snapshots
↑ +2.60 GW vs yesterday
Peak demand12:00
39.22 GWHighest 15-minute grid demand period
↑ +4.69 GW vs yesterday
Lowest demand04:30
24.82 GWLowest 15-minute grid demand period
↑ +0.54 GW vs yesterday
Domestic generationSupply
29.42 GWTracked UK generation sources only
↑ +1.28 GW vs yesterday
Average carbonCO₂
64 gCO₂/kWhCarbon intensity average
↑ +5 g vs yesterday
Renewable shareClean
70.3 %Wind, solar, hydro and biomass
↓ −1.6 pts vs yesterday
Clean share+ Nuclear
83.2 %Renewables plus nuclear
↓ −2.1 pts vs yesterday
Net importsFlow
-0.34 GWAverage imports minus exports
↑ +1.67 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 1 September 2025, Britain’s electricity grid averaged 32.28 GW of grid demand, with renewables averaging 70.3% of tracked domestic generation and carbon intensity averaging 64 gCO₂/kWh.

The highest demand period was 39.22 GW at 12:00, while the lowest carbon intensity period was 34 gCO₂/kWh at 14:30.

Key records for 1 September 2025

Highest wind18.99 GW15:00
Highest solar9.68 GW13:30
Highest gas7.04 GW19:30
Lowest carbon34 gCO₂/kWh14:30
Highest imports4.71 GW23:30
Highest exports4.26 GW00:00

Daily chart

Demand, generation and carbon intensity

1 September 2025

Generation mix

Wind, solar, gas and interconnector flow