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Daily UK grid report
UK Electricity Grid Daily Report — 29 March 2025

On 29 March 2025, Britain’s electricity grid averaged 31.51 GW of grid demand, with renewables averaging 66.3% of tracked domestic generation and carbon intensity averaging 71 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 31.51 GW

Average grid demand for this UK day.

Peak demand 38.42 GW

Highest 15-minute grid demand period.

Avg carbon 71 gCO₂/kWh

Average carbon intensity where available.

Renewables 66.3 %

Average renewable share of tracked generation.

Average grid demandDemand
31.51 GWFull-day average from available snapshots
↓ −1.98 GW vs yesterday
Peak demand18:00
38.42 GWHighest 15-minute grid demand period
↓ −0.56 GW vs yesterday
Lowest demand05:30
23.30 GWLowest 15-minute grid demand period
↓ −3.25 GW vs yesterday
Domestic generationSupply
26.20 GWTracked UK generation sources only
↓ −2.71 GW vs yesterday
Average carbonCO₂
71 gCO₂/kWhCarbon intensity average
↓ −7 g vs yesterday
Renewable shareClean
66.3 %Wind, solar, hydro and biomass
↑ +0.5 pts vs yesterday
Clean share+ Nuclear
80.6 %Renewables plus nuclear
↑ +2.4 pts vs yesterday
Net importsFlow
3.85 GWAverage imports minus exports
↑ +0.59 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 29 March 2025, Britain’s electricity grid averaged 31.51 GW of grid demand, with renewables averaging 66.3% of tracked domestic generation and carbon intensity averaging 71 gCO₂/kWh.

The highest demand period was 38.42 GW at 18:00, while the lowest carbon intensity period was 40 gCO₂/kWh at 14:00.

Key records for 29 March 2025

Highest wind21.87 GW23:30
Highest solar10.28 GW12:00
Highest gas6.99 GW18:30
Lowest carbon40 gCO₂/kWh14:00
Highest imports8.23 GW09:15
Highest exports4.16 GW23:00

Daily chart

Demand, generation and carbon intensity

29 March 2025

Generation mix

Wind, solar, gas and interconnector flow