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Daily UK grid report
UK Electricity Grid Daily Report — 9 March 2025

On 9 March 2025, Britain’s electricity grid averaged 29.13 GW of grid demand, with renewables averaging 39.0% of tracked domestic generation and carbon intensity averaging 158 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 29.13 GW

Average grid demand for this UK day.

Peak demand 36.81 GW

Highest 15-minute grid demand period.

Avg carbon 158 gCO₂/kWh

Average carbon intensity where available.

Renewables 39.0 %

Average renewable share of tracked generation.

Average grid demandDemand
29.13 GWFull-day average from available snapshots
↓ −0.54 GW vs yesterday
Peak demand18:00
36.81 GWHighest 15-minute grid demand period
↑ +0.50 GW vs yesterday
Lowest demand04:15
22.50 GWLowest 15-minute grid demand period
↓ −0.66 GW vs yesterday
Domestic generationSupply
22.10 GWTracked UK generation sources only
↓ −1.00 GW vs yesterday
Average carbonCO₂
158 gCO₂/kWhCarbon intensity average
↑ +53 g vs yesterday
Renewable shareClean
39.0 %Wind, solar, hydro and biomass
↓ −17.8 pts vs yesterday
Clean share+ Nuclear
56.1 %Renewables plus nuclear
↓ −16.7 pts vs yesterday
Net importsFlow
6.34 GWAverage imports minus exports
↑ +0.23 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 9 March 2025, Britain’s electricity grid averaged 29.13 GW of grid demand, with renewables averaging 39.0% of tracked domestic generation and carbon intensity averaging 158 gCO₂/kWh.

The highest demand period was 36.81 GW at 18:00, while the lowest carbon intensity period was 109 gCO₂/kWh at 00:00.

Key records for 9 March 2025

Highest wind8.02 GW00:00
Highest solar9.90 GW12:00
Highest gas17.49 GW18:30
Lowest carbon109 gCO₂/kWh00:00
Highest imports7.79 GW00:00
Highest exports1.24 GW00:45

Daily chart

Demand, generation and carbon intensity

9 March 2025

Generation mix

Wind, solar, gas and interconnector flow