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

On 30 May 2025, Britain’s electricity grid averaged 30.05 GW of grid demand, with renewables averaging 58.8% of tracked domestic generation and carbon intensity averaging 81 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 30.05 GW

Average grid demand for this UK day.

Peak demand 35.56 GW

Highest 15-minute grid demand period.

Avg carbon 81 gCO₂/kWh

Average carbon intensity where available.

Renewables 58.8 %

Average renewable share of tracked generation.

Average grid demandDemand
30.05 GWFull-day average from available snapshots
↓ −1.69 GW vs yesterday
Peak demand10:00
35.56 GWHighest 15-minute grid demand period
↓ −2.67 GW vs yesterday
Lowest demand05:15
24.73 GWLowest 15-minute grid demand period
↑ +0.80 GW vs yesterday
Domestic generationSupply
25.13 GWTracked UK generation sources only
↓ −3.68 GW vs yesterday
Average carbonCO₂
81 gCO₂/kWhCarbon intensity average
↑ +38 g vs yesterday
Renewable shareClean
58.8 %Wind, solar, hydro and biomass
↓ −13.8 pts vs yesterday
Clean share+ Nuclear
78.5 %Renewables plus nuclear
↓ −12.0 pts vs yesterday
Net importsFlow
3.04 GWAverage imports minus exports
↑ +2.28 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 30 May 2025, Britain’s electricity grid averaged 30.05 GW of grid demand, with renewables averaging 58.8% of tracked domestic generation and carbon intensity averaging 81 gCO₂/kWh.

The highest demand period was 35.56 GW at 10:00, while the lowest carbon intensity period was 40 gCO₂/kWh at 09:30.

Key records for 30 May 2025

Highest wind13.85 GW08:30
Highest solar9.21 GW13:00
Highest gas11.80 GW21:30
Lowest carbon40 gCO₂/kWh09:30
Highest imports7.20 GW17:00
Highest exports3.78 GW04:45

Daily chart

Demand, generation and carbon intensity

30 May 2025

Generation mix

Wind, solar, gas and interconnector flow