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Daily UK grid report
UK Electricity Grid Daily Report — 9 May 2025

On 9 May 2025, Britain’s electricity grid averaged 30.32 GW of grid demand, with renewables averaging 45.7% of tracked domestic generation and carbon intensity averaging 145 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 30.32 GW

Average grid demand for this UK day.

Peak demand 35.17 GW

Highest 15-minute grid demand period.

Avg carbon 145 gCO₂/kWh

Average carbon intensity where available.

Renewables 45.7 %

Average renewable share of tracked generation.

Average grid demandDemand
30.32 GWFull-day average from available snapshots
↓ −0.43 GW vs yesterday
Peak demand10:00
35.17 GWHighest 15-minute grid demand period
↓ −0.47 GW vs yesterday
Lowest demand03:45
24.08 GWLowest 15-minute grid demand period
↑ +0.33 GW vs yesterday
Domestic generationSupply
24.58 GWTracked UK generation sources only
↓ −0.76 GW vs yesterday
Average carbonCO₂
145 gCO₂/kWhCarbon intensity average
↓ −35 g vs yesterday
Renewable shareClean
45.7 %Wind, solar, hydro and biomass
↑ +9.5 pts vs yesterday
Clean share+ Nuclear
60.9 %Renewables plus nuclear
↑ +10.2 pts vs yesterday
Net importsFlow
4.13 GWAverage imports minus exports
↑ +0.39 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 9 May 2025, Britain’s electricity grid averaged 30.32 GW of grid demand, with renewables averaging 45.7% of tracked domestic generation and carbon intensity averaging 145 gCO₂/kWh.

The highest demand period was 35.17 GW at 10:00, while the lowest carbon intensity period was 67 gCO₂/kWh at 12:30.

Key records for 9 May 2025

Highest wind6.09 GW18:00
Highest solar13.68 GW12:30
Highest gas12.68 GW20:00
Lowest carbon67 gCO₂/kWh12:30
Highest imports7.92 GW09:30
Highest exports3.15 GW05:15

Daily chart

Demand, generation and carbon intensity

9 May 2025

Generation mix

Wind, solar, gas and interconnector flow