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Daily UK grid report
UK Electricity Grid Daily Report — 28 April 2025

On 28 April 2025, Britain’s electricity grid averaged 30.62 GW of grid demand, with renewables averaging 48.7% of tracked domestic generation and carbon intensity averaging 144 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 30.62 GW

Average grid demand for this UK day.

Peak demand 34.87 GW

Highest 15-minute grid demand period.

Avg carbon 144 gCO₂/kWh

Average carbon intensity where available.

Renewables 48.7 %

Average renewable share of tracked generation.

Average grid demandDemand
30.62 GWFull-day average from available snapshots
↑ +2.92 GW vs yesterday
Peak demand17:00
34.87 GWHighest 15-minute grid demand period
↑ +1.91 GW vs yesterday
Lowest demand04:15
24.54 GWLowest 15-minute grid demand period
↑ +3.54 GW vs yesterday
Domestic generationSupply
25.27 GWTracked UK generation sources only
↑ +2.65 GW vs yesterday
Average carbonCO₂
144 gCO₂/kWhCarbon intensity average
↑ +62 g vs yesterday
Renewable shareClean
48.7 %Wind, solar, hydro and biomass
↓ −12.9 pts vs yesterday
Clean share+ Nuclear
62.1 %Renewables plus nuclear
↓ −16.7 pts vs yesterday
Net importsFlow
3.35 GWAverage imports minus exports
↓ −0.87 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 28 April 2025, Britain’s electricity grid averaged 30.62 GW of grid demand, with renewables averaging 48.7% of tracked domestic generation and carbon intensity averaging 144 gCO₂/kWh.

The highest demand period was 34.87 GW at 17:00, while the lowest carbon intensity period was 76 gCO₂/kWh at 00:30.

Key records for 28 April 2025

Highest wind10.78 GW00:00
Highest solar12.15 GW13:00
Highest gas17.67 GW20:00
Lowest carbon76 gCO₂/kWh00:30
Highest imports7.60 GW08:00
Highest exports3.76 GW04:15

Daily chart

Demand, generation and carbon intensity

28 April 2025

Generation mix

Wind, solar, gas and interconnector flow