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Daily UK grid report
UK Electricity Grid Daily Report — 13 March 2025

On 13 March 2025, Britain’s electricity grid averaged 37.08 GW of grid demand, with renewables averaging 33.4% of tracked domestic generation and carbon intensity averaging 207 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 37.08 GW

Average grid demand for this UK day.

Peak demand 43.41 GW

Highest 15-minute grid demand period.

Avg carbon 207 gCO₂/kWh

Average carbon intensity where available.

Renewables 33.4 %

Average renewable share of tracked generation.

Average grid demandDemand
37.08 GWFull-day average from available snapshots
↓ −0.17 GW vs yesterday
Peak demand18:00
43.41 GWHighest 15-minute grid demand period
↓ −1.53 GW vs yesterday
Lowest demand03:15
28.33 GWLowest 15-minute grid demand period
↑ +0.36 GW vs yesterday
Domestic generationSupply
32.39 GWTracked UK generation sources only
↓ −1.76 GW vs yesterday
Average carbonCO₂
207 gCO₂/kWhCarbon intensity average
↑ +38 g vs yesterday
Renewable shareClean
33.4 %Wind, solar, hydro and biomass
↓ −11.1 pts vs yesterday
Clean share+ Nuclear
44.9 %Renewables plus nuclear
↓ −10.8 pts vs yesterday
Net importsFlow
3.22 GWAverage imports minus exports
↑ +2.12 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 13 March 2025, Britain’s electricity grid averaged 37.08 GW of grid demand, with renewables averaging 33.4% of tracked domestic generation and carbon intensity averaging 207 gCO₂/kWh.

The highest demand period was 43.41 GW at 18:00, while the lowest carbon intensity period was 145 gCO₂/kWh at 02:30.

Key records for 13 March 2025

Highest wind10.24 GW01:30
Highest solar5.93 GW12:30
Highest gas23.44 GW18:30
Lowest carbon145 gCO₂/kWh02:30
Highest imports7.34 GW20:00
Highest exports3.97 GW06:45

Daily chart

Demand, generation and carbon intensity

13 March 2025

Generation mix

Wind, solar, gas and interconnector flow