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

On 1 June 2025, Britain’s electricity grid averaged 28.27 GW of grid demand, with renewables averaging 66.6% of tracked domestic generation and carbon intensity averaging 57 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 28.27 GW

Average grid demand for this UK day.

Peak demand 33.01 GW

Highest 15-minute grid demand period.

Avg carbon 57 gCO₂/kWh

Average carbon intensity where available.

Renewables 66.6 %

Average renewable share of tracked generation.

Average grid demandDemand
28.27 GWFull-day average from available snapshots
↑ +0.44 GW vs yesterday
Peak demand18:15
33.01 GWHighest 15-minute grid demand period
↓ −1.13 GW vs yesterday
Lowest demand05:15
22.39 GWLowest 15-minute grid demand period
↑ +1.94 GW vs yesterday
Domestic generationSupply
26.05 GWTracked UK generation sources only
↑ +1.96 GW vs yesterday
Average carbonCO₂
57 gCO₂/kWhCarbon intensity average
↓ −29 g vs yesterday
Renewable shareClean
66.6 %Wind, solar, hydro and biomass
↑ +9.5 pts vs yesterday
Clean share+ Nuclear
85.8 %Renewables plus nuclear
↑ +7.3 pts vs yesterday
Net importsFlow
-0.16 GWAverage imports minus exports
↓ −2.28 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 1 June 2025, Britain’s electricity grid averaged 28.27 GW of grid demand, with renewables averaging 66.6% of tracked domestic generation and carbon intensity averaging 57 gCO₂/kWh.

The highest demand period was 33.01 GW at 18:15, while the lowest carbon intensity period was 34 gCO₂/kWh at 16:00.

Key records for 1 June 2025

Highest wind16.78 GW18:00
Highest solar9.51 GW11:30
Highest gas5.16 GW21:00
Lowest carbon34 gCO₂/kWh16:00
Highest imports4.78 GW23:00
Highest exports4.32 GW23:00

Daily chart

Demand, generation and carbon intensity

1 June 2025

Generation mix

Wind, solar, gas and interconnector flow