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UK Electricity Grid Daily Report — 24 September 2026

On 24 September 2026, Britain’s electricity grid averaged 29.67 GW of grid demand, with renewables averaging 49.0% of tracked domestic generation and carbon intensity averaging 130 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 29.67 GW

Average grid demand for this UK day.

Peak demand 36.24 GW

Highest 15-minute grid demand period.

Avg carbon 130 gCO₂/kWh

Average carbon intensity where available.

Renewables 49.0 %

Average renewable share of tracked generation.

Average grid demandDemand
29.67 GWFull-day average from available snapshots
↓ −0.85 GW vs yesterday
Peak demand18:15
36.24 GWHighest 15-minute grid demand period
↓ −6.07 GW vs yesterday
Lowest demand05:30
22.11 GWLowest 15-minute grid demand period
↓ −1.66 GW vs yesterday
Domestic generationSupply
25.37 GWTracked UK generation sources only
↓ −1.37 GW vs yesterday
Average carbonCO₂
130 gCO₂/kWhCarbon intensity average
No change vs yesterday
Renewable shareClean
49.0 %Wind, solar, hydro and biomass
↓ −2.2 pts vs yesterday
Clean share+ Nuclear
65.5 %Renewables plus nuclear
↓ −0.4 pts vs yesterday
Net importsFlow
3.15 GWAverage imports minus exports
↑ +1.45 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 24 September 2026, Britain’s electricity grid averaged 29.67 GW of grid demand, with renewables averaging 49.0% of tracked domestic generation and carbon intensity averaging 130 gCO₂/kWh.

The highest demand period was 36.24 GW at 18:15, while the lowest carbon intensity period was 62 gCO₂/kWh at 12:45.

Key records for 24 September 2026

Highest wind11.66 GW23:00
Highest solar9.67 GW13:30
Highest gas13.37 GW19:30
Lowest carbon62 gCO₂/kWh12:45
Highest imports6.86 GW11:15
Highest exports5.54 GW23:00

Daily chart

Demand, generation and carbon intensity

24 September 2026

Generation mix

Wind, solar, gas and interconnector flow