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Daily UK grid report
UK Electricity Grid Daily Report — 15 January 2025

On 15 January 2025, Britain’s electricity grid averaged 38.63 GW of grid demand, with renewables averaging 31.5% of tracked domestic generation and carbon intensity averaging 224 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 38.63 GW

Average grid demand for this UK day.

Peak demand 45.71 GW

Highest 15-minute grid demand period.

Avg carbon 224 gCO₂/kWh

Average carbon intensity where available.

Renewables 31.5 %

Average renewable share of tracked generation.

Average grid demandDemand
38.63 GWFull-day average from available snapshots
↓ −1.48 GW vs yesterday
Peak demand17:45
45.71 GWHighest 15-minute grid demand period
↓ −0.79 GW vs yesterday
Lowest demand04:15
29.71 GWLowest 15-minute grid demand period
↓ −1.79 GW vs yesterday
Domestic generationSupply
37.12 GWTracked UK generation sources only
↓ −0.58 GW vs yesterday
Average carbonCO₂
224 gCO₂/kWhCarbon intensity average
↑ +39 g vs yesterday
Renewable shareClean
31.5 %Wind, solar, hydro and biomass
↓ −9.3 pts vs yesterday
Clean share+ Nuclear
42.4 %Renewables plus nuclear
↓ −9.5 pts vs yesterday
Net importsFlow
-0.68 GWAverage imports minus exports
↓ −0.96 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 15 January 2025, Britain’s electricity grid averaged 38.63 GW of grid demand, with renewables averaging 31.5% of tracked domestic generation and carbon intensity averaging 224 gCO₂/kWh.

The highest demand period was 45.71 GW at 17:45, while the lowest carbon intensity period was 190 gCO₂/kWh at 03:30.

Key records for 15 January 2025

Highest wind9.86 GW18:00
Highest solar3.64 GW12:30
Highest gas24.73 GW17:30
Lowest carbon190 gCO₂/kWh03:30
Highest imports2.53 GW20:00
Highest exports3.95 GW05:00

Daily chart

Demand, generation and carbon intensity

15 January 2025

Generation mix

Wind, solar, gas and interconnector flow