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Daily UK grid report
UK Electricity Grid Daily Report — 5 January 2025

On 5 January 2025, Britain’s electricity grid averaged 34.50 GW of grid demand, with renewables averaging 55.4% of tracked domestic generation and carbon intensity averaging 102 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 34.50 GW

Average grid demand for this UK day.

Peak demand 43.17 GW

Highest 15-minute grid demand period.

Avg carbon 102 gCO₂/kWh

Average carbon intensity where available.

Renewables 55.4 %

Average renewable share of tracked generation.

Average grid demandDemand
34.50 GWFull-day average from available snapshots
↓ −0.61 GW vs yesterday
Peak demand17:45
43.17 GWHighest 15-minute grid demand period
↑ +0.03 GW vs yesterday
Lowest demand05:15
26.21 GWLowest 15-minute grid demand period
↓ −0.33 GW vs yesterday
Domestic generationSupply
28.90 GWTracked UK generation sources only
↓ −1.19 GW vs yesterday
Average carbonCO₂
102 gCO₂/kWhCarbon intensity average
↓ −93 g vs yesterday
Renewable shareClean
55.4 %Wind, solar, hydro and biomass
↑ +25.5 pts vs yesterday
Clean share+ Nuclear
73.3 %Renewables plus nuclear
↑ +26.2 pts vs yesterday
Net importsFlow
5.50 GWAverage imports minus exports
↑ +1.11 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 5 January 2025, Britain’s electricity grid averaged 34.50 GW of grid demand, with renewables averaging 55.4% of tracked domestic generation and carbon intensity averaging 102 gCO₂/kWh.

The highest demand period was 43.17 GW at 17:45, while the lowest carbon intensity period was 42 gCO₂/kWh at 23:00.

Key records for 5 January 2025

Highest wind15.55 GW23:00
Highest solar0.60 GW12:00
Highest gas15.53 GW17:30
Lowest carbon42 gCO₂/kWh23:00
Highest imports6.33 GW12:30
Highest exports0.87 GW17:30

Daily chart

Demand, generation and carbon intensity

5 January 2025

Generation mix

Wind, solar, gas and interconnector flow