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Daily UK grid report
UK Electricity Grid Daily Report — 28 July 2025

On 28 July 2025, Britain’s electricity grid averaged 28.75 GW of grid demand, with renewables averaging 47.4% of tracked domestic generation and carbon intensity averaging 115 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 28.75 GW

Average grid demand for this UK day.

Peak demand 34.60 GW

Highest 15-minute grid demand period.

Avg carbon 115 gCO₂/kWh

Average carbon intensity where available.

Renewables 47.4 %

Average renewable share of tracked generation.

Average grid demandDemand
28.75 GWFull-day average from available snapshots
↑ +2.99 GW vs yesterday
Peak demand12:00
34.60 GWHighest 15-minute grid demand period
↑ +4.52 GW vs yesterday
Lowest demand03:15
21.62 GWLowest 15-minute grid demand period
↑ +1.56 GW vs yesterday
Domestic generationSupply
21.51 GWTracked UK generation sources only
↑ +2.01 GW vs yesterday
Average carbonCO₂
115 gCO₂/kWhCarbon intensity average
↑ +4 g vs yesterday
Renewable shareClean
47.4 %Wind, solar, hydro and biomass
↑ +3.3 pts vs yesterday
Clean share+ Nuclear
67.1 %Renewables plus nuclear
↓ −0.4 pts vs yesterday
Net importsFlow
5.74 GWAverage imports minus exports
↑ +0.64 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 28 July 2025, Britain’s electricity grid averaged 28.75 GW of grid demand, with renewables averaging 47.4% of tracked domestic generation and carbon intensity averaging 115 gCO₂/kWh.

The highest demand period was 34.60 GW at 12:00, while the lowest carbon intensity period was 83 gCO₂/kWh at 12:30.

Key records for 28 July 2025

Highest wind7.05 GW05:00
Highest solar9.55 GW12:00
Highest gas11.67 GW19:30
Lowest carbon83 gCO₂/kWh12:30
Highest imports8.63 GW13:00
Highest exports2.81 GW05:00

Daily chart

Demand, generation and carbon intensity

28 July 2025

Generation mix

Wind, solar, gas and interconnector flow