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Daily UK grid report
UK Electricity Grid Daily Report — 7 September 2025

On 7 September 2025, Britain’s electricity grid averaged 30.40 GW of grid demand, with renewables averaging 72.8% of tracked domestic generation and carbon intensity averaging 61 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 30.40 GW

Average grid demand for this UK day.

Peak demand 35.10 GW

Highest 15-minute grid demand period.

Avg carbon 61 gCO₂/kWh

Average carbon intensity where available.

Renewables 72.8 %

Average renewable share of tracked generation.

Average grid demandDemand
30.40 GWFull-day average from available snapshots
↑ +2.27 GW vs yesterday
Peak demand12:15
35.10 GWHighest 15-minute grid demand period
↑ +2.39 GW vs yesterday
Lowest demand23:45
25.31 GWLowest 15-minute grid demand period
↑ +3.69 GW vs yesterday
Domestic generationSupply
26.69 GWTracked UK generation sources only
↑ +3.96 GW vs yesterday
Average carbonCO₂
61 gCO₂/kWhCarbon intensity average
↓ −15 g vs yesterday
Renewable shareClean
72.8 %Wind, solar, hydro and biomass
↑ +7.6 pts vs yesterday
Clean share+ Nuclear
85.1 %Renewables plus nuclear
↑ +4.7 pts vs yesterday
Net importsFlow
0.74 GWAverage imports minus exports
↓ −3.26 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 7 September 2025, Britain’s electricity grid averaged 30.40 GW of grid demand, with renewables averaging 72.8% of tracked domestic generation and carbon intensity averaging 61 gCO₂/kWh.

The highest demand period was 35.10 GW at 12:15, while the lowest carbon intensity period was 45 gCO₂/kWh at 11:30.

Key records for 7 September 2025

Highest wind19.73 GW00:00
Highest solar6.28 GW11:30
Highest gas4.76 GW20:30
Lowest carbon45 gCO₂/kWh11:30
Highest imports6.84 GW20:00
Highest exports5.96 GW00:45

Daily chart

Demand, generation and carbon intensity

7 September 2025

Generation mix

Wind, solar, gas and interconnector flow