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Daily UK grid report
UK Electricity Grid Daily Report — 17 January 2025

On 17 January 2025, Britain’s electricity grid averaged 38.67 GW of grid demand, with renewables averaging 37.4% of tracked domestic generation and carbon intensity averaging 208 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 44.24 GW

Highest 15-minute grid demand period.

Avg carbon 208 gCO₂/kWh

Average carbon intensity where available.

Renewables 37.4 %

Average renewable share of tracked generation.

Average grid demandDemand
38.67 GWFull-day average from available snapshots
↓ −0.13 GW vs yesterday
Peak demand13:00
44.24 GWHighest 15-minute grid demand period
↓ −1.92 GW vs yesterday
Lowest demand04:30
30.34 GWLowest 15-minute grid demand period
↑ +1.90 GW vs yesterday
Domestic generationSupply
36.96 GWTracked UK generation sources only
↓ −0.04 GW vs yesterday
Average carbonCO₂
208 gCO₂/kWhCarbon intensity average
↓ −4 g vs yesterday
Renewable shareClean
37.4 %Wind, solar, hydro and biomass
↑ +1.9 pts vs yesterday
Clean share+ Nuclear
47.1 %Renewables plus nuclear
↑ +1.8 pts vs yesterday
Net importsFlow
-0.08 GWAverage imports minus exports
↓ −0.20 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 17 January 2025, Britain’s electricity grid averaged 38.67 GW of grid demand, with renewables averaging 37.4% of tracked domestic generation and carbon intensity averaging 208 gCO₂/kWh.

The highest demand period was 44.24 GW at 13:00, while the lowest carbon intensity period was 154 gCO₂/kWh at 03:30.

Key records for 17 January 2025

Highest wind13.18 GW08:00
Highest solar1.94 GW11:30
Highest gas24.49 GW16:30
Lowest carbon154 gCO₂/kWh03:30
Highest imports4.12 GW13:00
Highest exports3.67 GW07:45

Daily chart

Demand, generation and carbon intensity

17 January 2025

Generation mix

Wind, solar, gas and interconnector flow