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Daily UK grid report
UK Electricity Grid Daily Report — 30 August 2025

On 30 August 2025, Britain’s electricity grid averaged 27.66 GW of grid demand, with renewables averaging 64.7% of tracked domestic generation and carbon intensity averaging 79 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 27.66 GW

Average grid demand for this UK day.

Peak demand 33.53 GW

Highest 15-minute grid demand period.

Avg carbon 79 gCO₂/kWh

Average carbon intensity where available.

Renewables 64.7 %

Average renewable share of tracked generation.

Average grid demandDemand
27.66 GWFull-day average from available snapshots
↓ −1.16 GW vs yesterday
Peak demand18:00
33.53 GWHighest 15-minute grid demand period
↓ −0.85 GW vs yesterday
Lowest demand06:15
20.79 GWLowest 15-minute grid demand period
↓ −0.97 GW vs yesterday
Domestic generationSupply
23.53 GWTracked UK generation sources only
↓ −0.07 GW vs yesterday
Average carbonCO₂
79 gCO₂/kWhCarbon intensity average
↓ −36 g vs yesterday
Renewable shareClean
64.7 %Wind, solar, hydro and biomass
↑ +9.2 pts vs yesterday
Clean share+ Nuclear
80.9 %Renewables plus nuclear
↑ +10.6 pts vs yesterday
Net importsFlow
2.65 GWAverage imports minus exports
↓ −1.40 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 30 August 2025, Britain’s electricity grid averaged 27.66 GW of grid demand, with renewables averaging 64.7% of tracked domestic generation and carbon intensity averaging 79 gCO₂/kWh.

The highest demand period was 33.53 GW at 18:00, while the lowest carbon intensity period was 41 gCO₂/kWh at 16:00.

Key records for 30 August 2025

Highest wind20.12 GW18:00
Highest solar7.47 GW10:30
Highest gas5.69 GW03:30
Lowest carbon41 gCO₂/kWh16:00
Highest imports7.46 GW12:15
Highest exports3.68 GW23:45

Daily chart

Demand, generation and carbon intensity

30 August 2025

Generation mix

Wind, solar, gas and interconnector flow