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Daily UK grid report
UK Electricity Grid Daily Report — 17 April 2025

On 17 April 2025, Britain’s electricity grid averaged 31.30 GW of grid demand, with renewables averaging 45.4% of tracked domestic generation and carbon intensity averaging 141 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 31.30 GW

Average grid demand for this UK day.

Peak demand 36.38 GW

Highest 15-minute grid demand period.

Avg carbon 141 gCO₂/kWh

Average carbon intensity where available.

Renewables 45.4 %

Average renewable share of tracked generation.

Average grid demandDemand
31.30 GWFull-day average from available snapshots
↓ −2.75 GW vs yesterday
Peak demand12:15
36.38 GWHighest 15-minute grid demand period
↓ −4.51 GW vs yesterday
Lowest demand04:15
23.83 GWLowest 15-minute grid demand period
↓ −1.24 GW vs yesterday
Domestic generationSupply
25.79 GWTracked UK generation sources only
↓ −3.92 GW vs yesterday
Average carbonCO₂
141 gCO₂/kWhCarbon intensity average
↑ +71 g vs yesterday
Renewable shareClean
45.4 %Wind, solar, hydro and biomass
↓ −21.0 pts vs yesterday
Clean share+ Nuclear
61.7 %Renewables plus nuclear
↓ −20.3 pts vs yesterday
Net importsFlow
4.13 GWAverage imports minus exports
↑ +2.14 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 17 April 2025, Britain’s electricity grid averaged 31.30 GW of grid demand, with renewables averaging 45.4% of tracked domestic generation and carbon intensity averaging 141 gCO₂/kWh.

The highest demand period was 36.38 GW at 12:15, while the lowest carbon intensity period was 67 gCO₂/kWh at 02:30.

Key records for 17 April 2025

Highest wind10.86 GW00:00
Highest solar11.61 GW12:00
Highest gas16.50 GW18:30
Lowest carbon67 gCO₂/kWh02:30
Highest imports6.92 GW23:00
Highest exports2.70 GW05:15

Daily chart

Demand, generation and carbon intensity

17 April 2025

Generation mix

Wind, solar, gas and interconnector flow