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Daily UK grid report
UK Electricity Grid Daily Report — 2 September 2025

On 2 September 2025, Britain’s electricity grid averaged 31.16 GW of grid demand, with renewables averaging 50.5% of tracked domestic generation and carbon intensity averaging 133 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 31.16 GW

Average grid demand for this UK day.

Peak demand 36.55 GW

Highest 15-minute grid demand period.

Avg carbon 133 gCO₂/kWh

Average carbon intensity where available.

Renewables 50.5 %

Average renewable share of tracked generation.

Average grid demandDemand
31.16 GWFull-day average from available snapshots
↓ −1.12 GW vs yesterday
Peak demand18:00
36.55 GWHighest 15-minute grid demand period
↓ −2.67 GW vs yesterday
Lowest demand04:15
23.08 GWLowest 15-minute grid demand period
↓ −1.73 GW vs yesterday
Domestic generationSupply
26.54 GWTracked UK generation sources only
↓ −2.88 GW vs yesterday
Average carbonCO₂
133 gCO₂/kWhCarbon intensity average
↑ +69 g vs yesterday
Renewable shareClean
50.5 %Wind, solar, hydro and biomass
↓ −19.7 pts vs yesterday
Clean share+ Nuclear
65.8 %Renewables plus nuclear
↓ −17.4 pts vs yesterday
Net importsFlow
2.22 GWAverage imports minus exports
↑ +2.56 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 2 September 2025, Britain’s electricity grid averaged 31.16 GW of grid demand, with renewables averaging 50.5% of tracked domestic generation and carbon intensity averaging 133 gCO₂/kWh.

The highest demand period was 36.55 GW at 18:00, while the lowest carbon intensity period was 65 gCO₂/kWh at 00:00.

Key records for 2 September 2025

Highest wind12.66 GW00:00
Highest solar6.90 GW11:00
Highest gas14.90 GW18:30
Lowest carbon65 gCO₂/kWh00:00
Highest imports5.76 GW09:00
Highest exports3.63 GW18:00

Daily chart

Demand, generation and carbon intensity

2 September 2025

Generation mix

Wind, solar, gas and interconnector flow