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Daily UK grid report
UK Electricity Grid Daily Report — 22 September 2026

On 22 September 2026, Britain’s electricity grid averaged 30.42 GW of grid demand, with renewables averaging 33.6% of tracked domestic generation and carbon intensity averaging 192 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 30.42 GW

Average grid demand for this UK day.

Peak demand 36.20 GW

Highest 15-minute grid demand period.

Avg carbon 192 gCO₂/kWh

Average carbon intensity where available.

Renewables 33.6 %

Average renewable share of tracked generation.

Average grid demandDemand
30.42 GWFull-day average from available snapshots
↑ +0.43 GW vs yesterday
Peak demand17:45
36.20 GWHighest 15-minute grid demand period
↓ −0.63 GW vs yesterday
Lowest demand04:45
23.83 GWLowest 15-minute grid demand period
↑ +1.05 GW vs yesterday
Domestic generationSupply
26.20 GWTracked UK generation sources only
↑ +2.25 GW vs yesterday
Average carbonCO₂
192 gCO₂/kWhCarbon intensity average
↑ +36 g vs yesterday
Renewable shareClean
33.6 %Wind, solar, hydro and biomass
↓ −9.0 pts vs yesterday
Clean share+ Nuclear
47.9 %Renewables plus nuclear
↓ −9.8 pts vs yesterday
Net importsFlow
2.86 GWAverage imports minus exports
↓ −1.86 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 22 September 2026, Britain’s electricity grid averaged 30.42 GW of grid demand, with renewables averaging 33.6% of tracked domestic generation and carbon intensity averaging 192 gCO₂/kWh.

The highest demand period was 36.20 GW at 17:45, while the lowest carbon intensity period was 125 gCO₂/kWh at 13:15.

Key records for 22 September 2026

Highest wind4.15 GW03:45
Highest solar8.67 GW13:00
Highest gas16.04 GW18:15
Lowest carbon125 gCO₂/kWh13:15
Highest imports6.82 GW11:00
Highest exports3.81 GW05:30

Daily chart

Demand, generation and carbon intensity

22 September 2026

Generation mix

Wind, solar, gas and interconnector flow