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

On 30 July 2025, Britain’s electricity grid averaged 29.10 GW of grid demand, with renewables averaging 42.4% of tracked domestic generation and carbon intensity averaging 143 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 29.10 GW

Average grid demand for this UK day.

Peak demand 34.06 GW

Highest 15-minute grid demand period.

Avg carbon 143 gCO₂/kWh

Average carbon intensity where available.

Renewables 42.4 %

Average renewable share of tracked generation.

Average grid demandDemand
29.10 GWFull-day average from available snapshots
↑ +0.79 GW vs yesterday
Peak demand12:30
34.06 GWHighest 15-minute grid demand period
↑ +0.84 GW vs yesterday
Lowest demand04:15
22.24 GWLowest 15-minute grid demand period
↑ +1.03 GW vs yesterday
Domestic generationSupply
22.64 GWTracked UK generation sources only
↑ +1.52 GW vs yesterday
Average carbonCO₂
143 gCO₂/kWhCarbon intensity average
↓ −22 g vs yesterday
Renewable shareClean
42.4 %Wind, solar, hydro and biomass
↑ +11.1 pts vs yesterday
Clean share+ Nuclear
61.1 %Renewables plus nuclear
↑ +9.4 pts vs yesterday
Net importsFlow
5.01 GWAverage imports minus exports
↓ −1.31 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 30 July 2025, Britain’s electricity grid averaged 29.10 GW of grid demand, with renewables averaging 42.4% of tracked domestic generation and carbon intensity averaging 143 gCO₂/kWh.

The highest demand period was 34.06 GW at 12:30, while the lowest carbon intensity period was 110 gCO₂/kWh at 16:00.

Key records for 30 July 2025

Highest wind5.75 GW21:00
Highest solar8.44 GW12:30
Highest gas11.27 GW19:30
Lowest carbon110 gCO₂/kWh16:00
Highest imports7.85 GW15:00
Highest exports2.24 GW05:45

Daily chart

Demand, generation and carbon intensity

30 July 2025

Generation mix

Wind, solar, gas and interconnector flow