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Daily UK grid report
UK Electricity Grid Daily Report — 20 January 2025

On 20 January 2025, Britain’s electricity grid averaged 38.98 GW of grid demand, with renewables averaging 19.8% of tracked domestic generation and carbon intensity averaging 268 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 38.98 GW

Average grid demand for this UK day.

Peak demand 45.41 GW

Highest 15-minute grid demand period.

Avg carbon 268 gCO₂/kWh

Average carbon intensity where available.

Renewables 19.8 %

Average renewable share of tracked generation.

Average grid demandDemand
38.98 GWFull-day average from available snapshots
↑ +2.61 GW vs yesterday
Peak demand13:00
45.41 GWHighest 15-minute grid demand period
↑ +0.73 GW vs yesterday
Lowest demand03:00
29.78 GWLowest 15-minute grid demand period
↑ +1.83 GW vs yesterday
Domestic generationSupply
36.75 GWTracked UK generation sources only
↑ +3.41 GW vs yesterday
Average carbonCO₂
268 gCO₂/kWhCarbon intensity average
↑ +9 g vs yesterday
Renewable shareClean
19.8 %Wind, solar, hydro and biomass
↓ −1.6 pts vs yesterday
Clean share+ Nuclear
29.6 %Renewables plus nuclear
↓ −2.5 pts vs yesterday
Net importsFlow
1.04 GWAverage imports minus exports
↓ −1.49 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 20 January 2025, Britain’s electricity grid averaged 38.98 GW of grid demand, with renewables averaging 19.8% of tracked domestic generation and carbon intensity averaging 268 gCO₂/kWh.

The highest demand period was 45.41 GW at 13:00, while the lowest carbon intensity period was 256 gCO₂/kWh at 01:30.

Key records for 20 January 2025

Highest wind4.34 GW23:30
Highest solar1.80 GW12:30
Highest gas27.25 GW09:30
Lowest carbon256 gCO₂/kWh01:30
Highest imports5.11 GW11:00
Highest exports4.28 GW05:00

Daily chart

Demand, generation and carbon intensity

20 January 2025

Generation mix

Wind, solar, gas and interconnector flow