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Daily UK grid report
UK Electricity Grid Daily Report — 17 June 2025

On 17 June 2025, Britain’s electricity grid averaged 31.85 GW of grid demand, with renewables averaging 59.0% of tracked domestic generation and carbon intensity averaging 95 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 31.85 GW

Average grid demand for this UK day.

Peak demand 36.76 GW

Highest 15-minute grid demand period.

Avg carbon 95 gCO₂/kWh

Average carbon intensity where available.

Renewables 59.0 %

Average renewable share of tracked generation.

Average grid demandDemand
31.85 GWFull-day average from available snapshots
↑ +1.95 GW vs yesterday
Peak demand13:15
36.76 GWHighest 15-minute grid demand period
↑ +1.98 GW vs yesterday
Lowest demand04:30
25.16 GWLowest 15-minute grid demand period
↑ +2.55 GW vs yesterday
Domestic generationSupply
27.12 GWTracked UK generation sources only
↑ +2.47 GW vs yesterday
Average carbonCO₂
95 gCO₂/kWhCarbon intensity average
↑ +3 g vs yesterday
Renewable shareClean
59.0 %Wind, solar, hydro and biomass
↓ −0.3 pts vs yesterday
Clean share+ Nuclear
76.7 %Renewables plus nuclear
↓ −0.3 pts vs yesterday
Net importsFlow
2.33 GWAverage imports minus exports
↓ −1.68 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 17 June 2025, Britain’s electricity grid averaged 31.85 GW of grid demand, with renewables averaging 59.0% of tracked domestic generation and carbon intensity averaging 95 gCO₂/kWh.

The highest demand period was 36.76 GW at 13:15, while the lowest carbon intensity period was 43 gCO₂/kWh at 13:00.

Key records for 17 June 2025

Highest wind11.70 GW00:00
Highest solar12.50 GW13:00
Highest gas13.20 GW20:30
Lowest carbon43 gCO₂/kWh13:00
Highest imports6.76 GW10:15
Highest exports4.21 GW20:30

Daily chart

Demand, generation and carbon intensity

17 June 2025

Generation mix

Wind, solar, gas and interconnector flow