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

On 13 August 2025, Britain’s electricity grid averaged 30.98 GW of grid demand, with renewables averaging 37.0% of tracked domestic generation and carbon intensity averaging 188 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 30.98 GW

Average grid demand for this UK day.

Peak demand 37.08 GW

Highest 15-minute grid demand period.

Avg carbon 188 gCO₂/kWh

Average carbon intensity where available.

Renewables 37.0 %

Average renewable share of tracked generation.

Average grid demandDemand
30.98 GWFull-day average from available snapshots
No change vs yesterday
Peak demand13:00
37.08 GWHighest 15-minute grid demand period
↓ −0.35 GW vs yesterday
Lowest demand02:45
23.32 GWLowest 15-minute grid demand period
↓ −0.78 GW vs yesterday
Domestic generationSupply
25.70 GWTracked UK generation sources only
↑ +0.80 GW vs yesterday
Average carbonCO₂
188 gCO₂/kWhCarbon intensity average
↑ +16 g vs yesterday
Renewable shareClean
37.0 %Wind, solar, hydro and biomass
↓ −3.1 pts vs yesterday
Clean share+ Nuclear
48.9 %Renewables plus nuclear
↓ −3.6 pts vs yesterday
Net importsFlow
3.84 GWAverage imports minus exports
↓ −0.57 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 13 August 2025, Britain’s electricity grid averaged 30.98 GW of grid demand, with renewables averaging 37.0% of tracked domestic generation and carbon intensity averaging 188 gCO₂/kWh.

The highest demand period was 37.08 GW at 13:00, while the lowest carbon intensity period was 139 gCO₂/kWh at 13:30.

Key records for 13 August 2025

Highest wind7.63 GW23:00
Highest solar9.60 GW13:30
Highest gas15.41 GW21:00
Lowest carbon139 gCO₂/kWh13:30
Highest imports8.42 GW10:15
Highest exports2.97 GW19:00

Daily chart

Demand, generation and carbon intensity

13 August 2025

Generation mix

Wind, solar, gas and interconnector flow