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Daily UK grid report
UK Electricity Grid Daily Report — 29 January 2025

On 29 January 2025, Britain’s electricity grid averaged 37.66 GW of grid demand, with renewables averaging 55.5% of tracked domestic generation and carbon intensity averaging 119 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 37.66 GW

Average grid demand for this UK day.

Peak demand 46.39 GW

Highest 15-minute grid demand period.

Avg carbon 119 gCO₂/kWh

Average carbon intensity where available.

Renewables 55.5 %

Average renewable share of tracked generation.

Average grid demandDemand
37.66 GWFull-day average from available snapshots
↑ +0.32 GW vs yesterday
Peak demand18:00
46.39 GWHighest 15-minute grid demand period
↑ +1.50 GW vs yesterday
Lowest demand04:15
27.91 GWLowest 15-minute grid demand period
↑ +1.60 GW vs yesterday
Domestic generationSupply
31.81 GWTracked UK generation sources only
↓ −0.02 GW vs yesterday
Average carbonCO₂
119 gCO₂/kWhCarbon intensity average
↑ +11 g vs yesterday
Renewable shareClean
55.5 %Wind, solar, hydro and biomass
↓ −1.7 pts vs yesterday
Clean share+ Nuclear
70.4 %Renewables plus nuclear
↓ −2.0 pts vs yesterday
Net importsFlow
5.26 GWAverage imports minus exports
↑ +0.05 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 29 January 2025, Britain’s electricity grid averaged 37.66 GW of grid demand, with renewables averaging 55.5% of tracked domestic generation and carbon intensity averaging 119 gCO₂/kWh.

The highest demand period was 46.39 GW at 18:00, while the lowest carbon intensity period was 50 gCO₂/kWh at 03:30.

Key records for 29 January 2025

Highest wind15.91 GW03:30
Highest solar4.70 GW11:30
Highest gas16.58 GW17:30
Lowest carbon50 gCO₂/kWh03:30
Highest imports7.08 GW01:30
Highest exports1.84 GW05:00

Daily chart

Demand, generation and carbon intensity

29 January 2025

Generation mix

Wind, solar, gas and interconnector flow