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Daily UK grid report
UK Electricity Grid Daily Report — 27 January 2025

On 27 January 2025, Britain’s electricity grid averaged 37.91 GW of grid demand, with renewables averaging 64.1% of tracked domestic generation and carbon intensity averaging 86 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 37.91 GW

Average grid demand for this UK day.

Peak demand 46.59 GW

Highest 15-minute grid demand period.

Avg carbon 86 gCO₂/kWh

Average carbon intensity where available.

Renewables 64.1 %

Average renewable share of tracked generation.

Average grid demandDemand
37.91 GWFull-day average from available snapshots
↑ +2.55 GW vs yesterday
Peak demand17:45
46.59 GWHighest 15-minute grid demand period
↑ +1.77 GW vs yesterday
Lowest demand03:45
26.20 GWLowest 15-minute grid demand period
↓ −0.33 GW vs yesterday
Domestic generationSupply
31.71 GWTracked UK generation sources only
↑ +1.67 GW vs yesterday
Average carbonCO₂
86 gCO₂/kWhCarbon intensity average
↑ +12 g vs yesterday
Renewable shareClean
64.1 %Wind, solar, hydro and biomass
↓ −3.7 pts vs yesterday
Clean share+ Nuclear
79.0 %Renewables plus nuclear
↓ −3.8 pts vs yesterday
Net importsFlow
5.88 GWAverage imports minus exports
↑ +0.43 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 27 January 2025, Britain’s electricity grid averaged 37.91 GW of grid demand, with renewables averaging 64.1% of tracked domestic generation and carbon intensity averaging 86 gCO₂/kWh.

The highest demand period was 46.59 GW at 17:45, while the lowest carbon intensity period was 37 gCO₂/kWh at 02:30.

Key records for 27 January 2025

Highest wind17.94 GW00:00
Highest solar4.87 GW11:30
Highest gas11.47 GW17:30
Lowest carbon37 gCO₂/kWh02:30
Highest imports7.84 GW13:00
Highest exports0.98 GW16:30

Daily chart

Demand, generation and carbon intensity

27 January 2025

Generation mix

Wind, solar, gas and interconnector flow