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Daily UK grid report
UK Electricity Grid Daily Report — 17 July 2025

On 17 July 2025, Britain’s electricity grid averaged 30.05 GW of grid demand, with renewables averaging 37.1% of tracked domestic generation and carbon intensity averaging 165 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 30.05 GW

Average grid demand for this UK day.

Peak demand 35.42 GW

Highest 15-minute grid demand period.

Avg carbon 165 gCO₂/kWh

Average carbon intensity where available.

Renewables 37.1 %

Average renewable share of tracked generation.

Average grid demandDemand
30.05 GWFull-day average from available snapshots
↓ −0.01 GW vs yesterday
Peak demand17:00
35.42 GWHighest 15-minute grid demand period
↑ +0.69 GW vs yesterday
Lowest demand04:15
22.36 GWLowest 15-minute grid demand period
↓ −1.17 GW vs yesterday
Domestic generationSupply
24.18 GWTracked UK generation sources only
↑ +0.66 GW vs yesterday
Average carbonCO₂
165 gCO₂/kWhCarbon intensity average
↑ +34 g vs yesterday
Renewable shareClean
37.1 %Wind, solar, hydro and biomass
↓ −8.5 pts vs yesterday
Clean share+ Nuclear
55.0 %Renewables plus nuclear
↓ −8.6 pts vs yesterday
Net importsFlow
5.12 GWAverage imports minus exports
↑ +0.20 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 17 July 2025, Britain’s electricity grid averaged 30.05 GW of grid demand, with renewables averaging 37.1% of tracked domestic generation and carbon intensity averaging 165 gCO₂/kWh.

The highest demand period was 35.42 GW at 17:00, while the lowest carbon intensity period was 119 gCO₂/kWh at 15:00.

Key records for 17 July 2025

Highest wind6.74 GW21:30
Highest solar6.66 GW14:00
Highest gas12.95 GW21:00
Lowest carbon119 gCO₂/kWh15:00
Highest imports8.81 GW15:00
Highest exports2.41 GW23:00

Daily chart

Demand, generation and carbon intensity

17 July 2025

Generation mix

Wind, solar, gas and interconnector flow