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Daily UK grid report
UK Electricity Grid Daily Report — 11 March 2025

On 11 March 2025, Britain’s electricity grid averaged 35.70 GW of grid demand, with renewables averaging 48.1% of tracked domestic generation and carbon intensity averaging 145 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 35.70 GW

Average grid demand for this UK day.

Peak demand 43.84 GW

Highest 15-minute grid demand period.

Avg carbon 145 gCO₂/kWh

Average carbon intensity where available.

Renewables 48.1 %

Average renewable share of tracked generation.

Average grid demandDemand
35.70 GWFull-day average from available snapshots
↑ +0.71 GW vs yesterday
Peak demand18:00
43.84 GWHighest 15-minute grid demand period
↓ −0.23 GW vs yesterday
Lowest demand03:30
26.78 GWLowest 15-minute grid demand period
↑ +2.50 GW vs yesterday
Domestic generationSupply
32.14 GWTracked UK generation sources only
↑ +1.49 GW vs yesterday
Average carbonCO₂
145 gCO₂/kWhCarbon intensity average
↓ −12 g vs yesterday
Renewable shareClean
48.1 %Wind, solar, hydro and biomass
↑ +3.6 pts vs yesterday
Clean share+ Nuclear
59.8 %Renewables plus nuclear
↑ +2.9 pts vs yesterday
Net importsFlow
1.50 GWAverage imports minus exports
↓ −1.07 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 11 March 2025, Britain’s electricity grid averaged 35.70 GW of grid demand, with renewables averaging 48.1% of tracked domestic generation and carbon intensity averaging 145 gCO₂/kWh.

The highest demand period was 43.84 GW at 18:00, while the lowest carbon intensity period was 77 gCO₂/kWh at 01:30.

Key records for 11 March 2025

Highest wind14.31 GW00:30
Highest solar7.49 GW11:00
Highest gas20.50 GW19:00
Lowest carbon77 gCO₂/kWh01:30
Highest imports5.00 GW23:00
Highest exports4.45 GW17:00

Daily chart

Demand, generation and carbon intensity

11 March 2025

Generation mix

Wind, solar, gas and interconnector flow