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

On 28 August 2025, Britain’s electricity grid averaged 30.35 GW of grid demand, with renewables averaging 58.1% 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 30.35 GW

Average grid demand for this UK day.

Peak demand 34.85 GW

Highest 15-minute grid demand period.

Avg carbon 115 gCO₂/kWh

Average carbon intensity where available.

Renewables 58.1 %

Average renewable share of tracked generation.

Average grid demandDemand
30.35 GWFull-day average from available snapshots
↑ +0.43 GW vs yesterday
Peak demand12:30
34.85 GWHighest 15-minute grid demand period
↓ −1.16 GW vs yesterday
Lowest demand03:30
23.12 GWLowest 15-minute grid demand period
↑ +0.88 GW vs yesterday
Domestic generationSupply
25.99 GWTracked UK generation sources only
↑ +0.27 GW vs yesterday
Average carbonCO₂
115 gCO₂/kWhCarbon intensity average
↓ −5 g vs yesterday
Renewable shareClean
58.1 %Wind, solar, hydro and biomass
No change vs yesterday
Clean share+ Nuclear
70.8 %Renewables plus nuclear
↑ +0.4 pts vs yesterday
Net importsFlow
2.15 GWAverage imports minus exports
↓ −0.48 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 28 August 2025, Britain’s electricity grid averaged 30.35 GW of grid demand, with renewables averaging 58.1% of tracked domestic generation and carbon intensity averaging 115 gCO₂/kWh.

The highest demand period was 34.85 GW at 12:30, while the lowest carbon intensity period was 71 gCO₂/kWh at 23:30.

Key records for 28 August 2025

Highest wind13.02 GW21:30
Highest solar8.41 GW11:00
Highest gas9.75 GW07:30
Lowest carbon71 gCO₂/kWh23:30
Highest imports5.42 GW12:30
Highest exports3.18 GW07:00

Daily chart

Demand, generation and carbon intensity

28 August 2025

Generation mix

Wind, solar, gas and interconnector flow