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Daily UK grid report
UK Electricity Grid Daily Report — 19 May 2025

On 19 May 2025, Britain’s electricity grid averaged 29.98 GW of grid demand, with renewables averaging 41.2% of tracked domestic generation and carbon intensity averaging 138 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 29.98 GW

Average grid demand for this UK day.

Peak demand 34.85 GW

Highest 15-minute grid demand period.

Avg carbon 138 gCO₂/kWh

Average carbon intensity where available.

Renewables 41.2 %

Average renewable share of tracked generation.

Average grid demandDemand
29.98 GWFull-day average from available snapshots
↑ +3.09 GW vs yesterday
Peak demand11:00
34.85 GWHighest 15-minute grid demand period
↑ +3.18 GW vs yesterday
Lowest demand04:45
22.54 GWLowest 15-minute grid demand period
↑ +1.70 GW vs yesterday
Domestic generationSupply
25.16 GWTracked UK generation sources only
↑ +3.09 GW vs yesterday
Average carbonCO₂
138 gCO₂/kWhCarbon intensity average
↑ +47 g vs yesterday
Renewable shareClean
41.2 %Wind, solar, hydro and biomass
↓ −9.6 pts vs yesterday
Clean share+ Nuclear
62.8 %Renewables plus nuclear
↓ −12.3 pts vs yesterday
Net importsFlow
3.12 GWAverage imports minus exports
↓ −0.36 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 19 May 2025, Britain’s electricity grid averaged 29.98 GW of grid demand, with renewables averaging 41.2% of tracked domestic generation and carbon intensity averaging 138 gCO₂/kWh.

The highest demand period was 34.85 GW at 11:00, while the lowest carbon intensity period was 75 gCO₂/kWh at 14:00.

Key records for 19 May 2025

Highest wind6.05 GW14:00
Highest solar9.87 GW14:00
Highest gas14.22 GW21:00
Lowest carbon75 gCO₂/kWh14:00
Highest imports6.46 GW10:15
Highest exports3.00 GW23:15

Daily chart

Demand, generation and carbon intensity

19 May 2025

Generation mix

Wind, solar, gas and interconnector flow