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Daily UK grid report
UK Electricity Grid Daily Report — 23 July 2025

On 23 July 2025, Britain’s electricity grid averaged 29.18 GW of grid demand, with renewables averaging 38.9% of tracked domestic generation and carbon intensity averaging 141 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 29.18 GW

Average grid demand for this UK day.

Peak demand 34.58 GW

Highest 15-minute grid demand period.

Avg carbon 141 gCO₂/kWh

Average carbon intensity where available.

Renewables 38.9 %

Average renewable share of tracked generation.

Average grid demandDemand
29.18 GWFull-day average from available snapshots
↓ −0.97 GW vs yesterday
Peak demand13:00
34.58 GWHighest 15-minute grid demand period
↓ −0.38 GW vs yesterday
Lowest demand05:15
20.97 GWLowest 15-minute grid demand period
↓ −2.94 GW vs yesterday
Domestic generationSupply
22.40 GWTracked UK generation sources only
↓ −0.84 GW vs yesterday
Average carbonCO₂
141 gCO₂/kWhCarbon intensity average
↓ −2 g vs yesterday
Renewable shareClean
38.9 %Wind, solar, hydro and biomass
↑ +1.7 pts vs yesterday
Clean share+ Nuclear
60.0 %Renewables plus nuclear
↑ +2.2 pts vs yesterday
Net importsFlow
5.67 GWAverage imports minus exports
↑ +0.63 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 23 July 2025, Britain’s electricity grid averaged 29.18 GW of grid demand, with renewables averaging 38.9% of tracked domestic generation and carbon intensity averaging 141 gCO₂/kWh.

The highest demand period was 34.58 GW at 13:00, while the lowest carbon intensity period was 121 gCO₂/kWh at 11:00.

Key records for 23 July 2025

Highest wind5.36 GW23:30
Highest solar7.43 GW11:00
Highest gas11.90 GW20:00
Lowest carbon121 gCO₂/kWh11:00
Highest imports8.42 GW12:00
Highest exports2.76 GW23:00

Daily chart

Demand, generation and carbon intensity

23 July 2025

Generation mix

Wind, solar, gas and interconnector flow