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

On 30 April 2025, Britain’s electricity grid averaged 30.35 GW of grid demand, with renewables averaging 39.4% of tracked domestic generation and carbon intensity averaging 176 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 35.44 GW

Highest 15-minute grid demand period.

Avg carbon 176 gCO₂/kWh

Average carbon intensity where available.

Renewables 39.4 %

Average renewable share of tracked generation.

Average grid demandDemand
30.35 GWFull-day average from available snapshots
↑ +0.18 GW vs yesterday
Peak demand18:00
35.44 GWHighest 15-minute grid demand period
↑ +0.08 GW vs yesterday
Lowest demand03:30
22.73 GWLowest 15-minute grid demand period
↑ +0.25 GW vs yesterday
Domestic generationSupply
25.13 GWTracked UK generation sources only
↑ +0.14 GW vs yesterday
Average carbonCO₂
176 gCO₂/kWhCarbon intensity average
↓ −4 g vs yesterday
Renewable shareClean
39.4 %Wind, solar, hydro and biomass
↑ +1.0 pts vs yesterday
Clean share+ Nuclear
52.4 %Renewables plus nuclear
↑ +0.9 pts vs yesterday
Net importsFlow
3.64 GWAverage imports minus exports
↓ −0.15 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 30 April 2025, Britain’s electricity grid averaged 30.35 GW of grid demand, with renewables averaging 39.4% of tracked domestic generation and carbon intensity averaging 176 gCO₂/kWh.

The highest demand period was 35.44 GW at 18:00, while the lowest carbon intensity period was 109 gCO₂/kWh at 13:30.

Key records for 30 April 2025

Highest wind4.51 GW21:00
Highest solar13.47 GW12:30
Highest gas17.00 GW21:00
Lowest carbon109 gCO₂/kWh13:30
Highest imports6.94 GW12:00
Highest exports4.12 GW19:45

Daily chart

Demand, generation and carbon intensity

30 April 2025

Generation mix

Wind, solar, gas and interconnector flow