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Daily UK grid report
UK Electricity Grid Daily Report — 25 April 2025

On 25 April 2025, Britain’s electricity grid averaged 30.92 GW of grid demand, with renewables averaging 43.4% of tracked domestic generation and carbon intensity averaging 159 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 30.92 GW

Average grid demand for this UK day.

Peak demand 35.75 GW

Highest 15-minute grid demand period.

Avg carbon 159 gCO₂/kWh

Average carbon intensity where available.

Renewables 43.4 %

Average renewable share of tracked generation.

Average grid demandDemand
30.92 GWFull-day average from available snapshots
↑ +0.05 GW vs yesterday
Peak demand10:00
35.75 GWHighest 15-minute grid demand period
↓ −0.65 GW vs yesterday
Lowest demand01:15
24.66 GWLowest 15-minute grid demand period
↑ +0.36 GW vs yesterday
Domestic generationSupply
25.53 GWTracked UK generation sources only
↓ −0.34 GW vs yesterday
Average carbonCO₂
159 gCO₂/kWhCarbon intensity average
↓ −19 g vs yesterday
Renewable shareClean
43.4 %Wind, solar, hydro and biomass
↑ +5.1 pts vs yesterday
Clean share+ Nuclear
56.9 %Renewables plus nuclear
↑ +5.3 pts vs yesterday
Net importsFlow
3.79 GWAverage imports minus exports
↓ −0.19 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 25 April 2025, Britain’s electricity grid averaged 30.92 GW of grid demand, with renewables averaging 43.4% of tracked domestic generation and carbon intensity averaging 159 gCO₂/kWh.

The highest demand period was 35.75 GW at 10:00, while the lowest carbon intensity period was 118 gCO₂/kWh at 14:00.

Key records for 25 April 2025

Highest wind6.37 GW11:00
Highest solar7.73 GW13:30
Highest gas15.13 GW18:30
Lowest carbon118 gCO₂/kWh14:00
Highest imports7.43 GW11:30
Highest exports3.14 GW05:00

Daily chart

Demand, generation and carbon intensity

25 April 2025

Generation mix

Wind, solar, gas and interconnector flow