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Daily UK grid report
UK Electricity Grid Daily Report — 27 June 2025

On 27 June 2025, Britain’s electricity grid averaged 31.06 GW of grid demand, with renewables averaging 64.5% of tracked domestic generation and carbon intensity averaging 73 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 31.06 GW

Average grid demand for this UK day.

Peak demand 37.53 GW

Highest 15-minute grid demand period.

Avg carbon 73 gCO₂/kWh

Average carbon intensity where available.

Renewables 64.5 %

Average renewable share of tracked generation.

Average grid demandDemand
31.06 GWFull-day average from available snapshots
↓ −0.98 GW vs yesterday
Peak demand13:00
37.53 GWHighest 15-minute grid demand period
↓ −0.82 GW vs yesterday
Lowest demand04:30
23.35 GWLowest 15-minute grid demand period
↓ −1.57 GW vs yesterday
Domestic generationSupply
28.02 GWTracked UK generation sources only
↓ −0.30 GW vs yesterday
Average carbonCO₂
73 gCO₂/kWhCarbon intensity average
↓ −8 g vs yesterday
Renewable shareClean
64.5 %Wind, solar, hydro and biomass
↑ +2.6 pts vs yesterday
Clean share+ Nuclear
82.4 %Renewables plus nuclear
↑ +3.0 pts vs yesterday
Net importsFlow
1.37 GWAverage imports minus exports
No change vs yesterday

Daily insight

What happened on the UK electricity grid?

On 27 June 2025, Britain’s electricity grid averaged 31.06 GW of grid demand, with renewables averaging 64.5% of tracked domestic generation and carbon intensity averaging 73 gCO₂/kWh.

The highest demand period was 37.53 GW at 13:00, while the lowest carbon intensity period was 36 gCO₂/kWh at 14:30.

Key records for 27 June 2025

Highest wind16.86 GW16:00
Highest solar11.33 GW12:30
Highest gas7.00 GW21:30
Lowest carbon36 gCO₂/kWh14:30
Highest imports5.35 GW08:00
Highest exports3.29 GW23:00

Daily chart

Demand, generation and carbon intensity

27 June 2025

Generation mix

Wind, solar, gas and interconnector flow