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Daily UK grid report
UK Electricity Grid Daily Report — 15 April 2025

On 15 April 2025, Britain’s electricity grid averaged 30.84 GW of grid demand, with renewables averaging 37.4% of tracked domestic generation and carbon intensity averaging 157 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 30.84 GW

Average grid demand for this UK day.

Peak demand 36.33 GW

Highest 15-minute grid demand period.

Avg carbon 157 gCO₂/kWh

Average carbon intensity where available.

Renewables 37.4 %

Average renewable share of tracked generation.

Average grid demandDemand
30.84 GWFull-day average from available snapshots
↓ −1.19 GW vs yesterday
Peak demand18:00
36.33 GWHighest 15-minute grid demand period
↓ −1.65 GW vs yesterday
Lowest demand04:45
22.92 GWLowest 15-minute grid demand period
↓ −0.26 GW vs yesterday
Domestic generationSupply
23.99 GWTracked UK generation sources only
↓ −2.50 GW vs yesterday
Average carbonCO₂
157 gCO₂/kWhCarbon intensity average
↑ +58 g vs yesterday
Renewable shareClean
37.4 %Wind, solar, hydro and biomass
↓ −20.5 pts vs yesterday
Clean share+ Nuclear
56.8 %Renewables plus nuclear
↓ −18.7 pts vs yesterday
Net importsFlow
6.16 GWAverage imports minus exports
↑ +2.20 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 15 April 2025, Britain’s electricity grid averaged 30.84 GW of grid demand, with renewables averaging 37.4% of tracked domestic generation and carbon intensity averaging 157 gCO₂/kWh.

The highest demand period was 36.33 GW at 18:00, while the lowest carbon intensity period was 76 gCO₂/kWh at 23:30.

Key records for 15 April 2025

Highest wind8.95 GW23:30
Highest solar4.86 GW13:00
Highest gas15.11 GW18:30
Lowest carbon76 gCO₂/kWh23:30
Highest imports7.82 GW08:45
Highest exports1.21 GW22:00

Daily chart

Demand, generation and carbon intensity

15 April 2025

Generation mix

Wind, solar, gas and interconnector flow