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Daily UK grid report
UK Electricity Grid Daily Report — 29 August 2025

On 29 August 2025, Britain’s electricity grid averaged 28.81 GW of grid demand, with renewables averaging 55.4% of tracked domestic generation and carbon intensity averaging 114 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 28.81 GW

Average grid demand for this UK day.

Peak demand 34.38 GW

Highest 15-minute grid demand period.

Avg carbon 114 gCO₂/kWh

Average carbon intensity where available.

Renewables 55.4 %

Average renewable share of tracked generation.

Average grid demandDemand
28.81 GWFull-day average from available snapshots
↓ −1.54 GW vs yesterday
Peak demand12:00
34.38 GWHighest 15-minute grid demand period
↓ −0.47 GW vs yesterday
Lowest demand04:30
21.76 GWLowest 15-minute grid demand period
↓ −1.36 GW vs yesterday
Domestic generationSupply
23.61 GWTracked UK generation sources only
↓ −2.39 GW vs yesterday
Average carbonCO₂
114 gCO₂/kWhCarbon intensity average
No change vs yesterday
Renewable shareClean
55.4 %Wind, solar, hydro and biomass
↓ −2.7 pts vs yesterday
Clean share+ Nuclear
70.3 %Renewables plus nuclear
↓ −0.5 pts vs yesterday
Net importsFlow
4.04 GWAverage imports minus exports
↑ +1.89 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 29 August 2025, Britain’s electricity grid averaged 28.81 GW of grid demand, with renewables averaging 55.4% of tracked domestic generation and carbon intensity averaging 114 gCO₂/kWh.

The highest demand period was 34.38 GW at 12:00, while the lowest carbon intensity period was 65 gCO₂/kWh at 01:30.

Key records for 29 August 2025

Highest wind11.73 GW00:00
Highest solar8.39 GW12:30
Highest gas10.41 GW18:00
Lowest carbon65 gCO₂/kWh01:30
Highest imports6.99 GW12:00
Highest exports2.46 GW18:45

Daily chart

Demand, generation and carbon intensity

29 August 2025

Generation mix

Wind, solar, gas and interconnector flow