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Daily UK grid report
UK Electricity Grid Daily Report — 10 December 2025

On 10 December 2025, Britain’s electricity grid averaged 38.67 GW of grid demand, with renewables averaging 72.0% of tracked domestic generation and carbon intensity averaging 69 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 38.67 GW

Average grid demand for this UK day.

Peak demand 45.52 GW

Highest 15-minute grid demand period.

Avg carbon 69 gCO₂/kWh

Average carbon intensity where available.

Renewables 72.0 %

Average renewable share of tracked generation.

Average grid demandDemand
38.67 GWFull-day average from available snapshots
↑ +0.69 GW vs yesterday
Peak demand17:00
45.52 GWHighest 15-minute grid demand period
↑ +0.20 GW vs yesterday
Lowest demand05:15
30.03 GWLowest 15-minute grid demand period
↑ +1.82 GW vs yesterday
Domestic generationSupply
35.16 GWTracked UK generation sources only
↑ +1.60 GW vs yesterday
Average carbonCO₂
69 gCO₂/kWhCarbon intensity average
No change vs yesterday
Renewable shareClean
72.0 %Wind, solar, hydro and biomass
↓ −0.4 pts vs yesterday
Clean share+ Nuclear
82.3 %Renewables plus nuclear
↓ −1.0 pts vs yesterday
Net importsFlow
1.94 GWAverage imports minus exports
↓ −1.12 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 10 December 2025, Britain’s electricity grid averaged 38.67 GW of grid demand, with renewables averaging 72.0% of tracked domestic generation and carbon intensity averaging 69 gCO₂/kWh.

The highest demand period was 45.52 GW at 17:00, while the lowest carbon intensity period was 38 gCO₂/kWh at 03:30.

Key records for 10 December 2025

Highest wind22.47 GW12:30
Highest solar5.09 GW11:30
Highest gas8.89 GW17:00
Lowest carbon38 gCO₂/kWh03:30
Highest imports5.82 GW17:00
Highest exports3.58 GW04:00

Daily chart

Demand, generation and carbon intensity

10 December 2025

Generation mix

Wind, solar, gas and interconnector flow