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Daily UK grid report
UK Electricity Grid Daily Report — 1 January 2025

On 1 January 2025, Britain’s electricity grid averaged 32.00 GW of grid demand, with renewables averaging 67.8% of tracked domestic generation and carbon intensity averaging 57 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 32.00 GW

Average grid demand for this UK day.

Peak demand 38.20 GW

Highest 15-minute grid demand period.

Avg carbon 57 gCO₂/kWh

Average carbon intensity where available.

Renewables 67.8 %

Average renewable share of tracked generation.

Average grid demandDemand
32.00 GWFull-day average from available snapshots
↓ −2.01 GW vs yesterday
Peak demand17:00
38.20 GWHighest 15-minute grid demand period
↓ −1.84 GW vs yesterday
Lowest demand23:45
27.09 GWLowest 15-minute grid demand period
↓ −1.04 GW vs yesterday
Domestic generationSupply
29.07 GWTracked UK generation sources only
↓ −2.97 GW vs yesterday
Average carbonCO₂
57 gCO₂/kWhCarbon intensity average
↓ −4 g vs yesterday
Renewable shareClean
67.8 %Wind, solar, hydro and biomass
↓ −1.2 pts vs yesterday
Clean share+ Nuclear
85.3 %Renewables plus nuclear
↑ +0.4 pts vs yesterday
Net importsFlow
1.49 GWAverage imports minus exports
↑ +1.35 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 1 January 2025, Britain’s electricity grid averaged 32.00 GW of grid demand, with renewables averaging 67.8% of tracked domestic generation and carbon intensity averaging 57 gCO₂/kWh.

The highest demand period was 38.20 GW at 17:00, while the lowest carbon intensity period was 32 gCO₂/kWh at 11:00.

Key records for 1 January 2025

Highest wind21.25 GW00:00
Highest solar0.51 GW13:00
Highest gas6.64 GW18:00
Lowest carbon32 gCO₂/kWh11:00
Highest imports5.91 GW13:45
Highest exports5.18 GW05:00

Daily chart

Demand, generation and carbon intensity

1 January 2025

Generation mix

Wind, solar, gas and interconnector flow