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Daily UK grid report
UK Electricity Grid Daily Report — 22 March 2025

On 22 March 2025, Britain’s electricity grid averaged 29.62 GW of grid demand, with renewables averaging 53.8% of tracked domestic generation and carbon intensity averaging 105 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 29.62 GW

Average grid demand for this UK day.

Peak demand 34.12 GW

Highest 15-minute grid demand period.

Avg carbon 105 gCO₂/kWh

Average carbon intensity where available.

Renewables 53.8 %

Average renewable share of tracked generation.

Average grid demandDemand
29.62 GWFull-day average from available snapshots
↓ −4.25 GW vs yesterday
Peak demand18:45
34.12 GWHighest 15-minute grid demand period
↓ −5.77 GW vs yesterday
Lowest demand04:15
24.86 GWLowest 15-minute grid demand period
↓ −1.67 GW vs yesterday
Domestic generationSupply
22.97 GWTracked UK generation sources only
↓ −4.60 GW vs yesterday
Average carbonCO₂
105 gCO₂/kWhCarbon intensity average
↑ +40 g vs yesterday
Renewable shareClean
53.8 %Wind, solar, hydro and biomass
↓ −15.8 pts vs yesterday
Clean share+ Nuclear
69.2 %Renewables plus nuclear
↓ −13.9 pts vs yesterday
Net importsFlow
6.64 GWAverage imports minus exports
↑ +1.40 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 22 March 2025, Britain’s electricity grid averaged 29.62 GW of grid demand, with renewables averaging 53.8% of tracked domestic generation and carbon intensity averaging 105 gCO₂/kWh.

The highest demand period was 34.12 GW at 18:45, while the lowest carbon intensity period was 64 gCO₂/kWh at 04:30.

Key records for 22 March 2025

Highest wind13.81 GW00:00
Highest solar6.03 GW11:30
Highest gas12.64 GW18:30
Lowest carbon64 gCO₂/kWh04:30
Highest imports8.70 GW23:00
Highest exports1.54 GW05:00

Daily chart

Demand, generation and carbon intensity

22 March 2025

Generation mix

Wind, solar, gas and interconnector flow