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Daily UK grid report
UK Electricity Grid Daily Report — 29 September 2026

On 29 September 2026, Britain’s electricity grid averaged 31.96 GW of grid demand, with renewables averaging 61.9% of tracked domestic generation and carbon intensity averaging 116 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 31.96 GW

Average grid demand for this UK day.

Peak demand 37.80 GW

Highest 15-minute grid demand period.

Avg carbon 116 gCO₂/kWh

Average carbon intensity where available.

Renewables 61.9 %

Average renewable share of tracked generation.

Average grid demandDemand
31.96 GWFull-day average from available snapshots
↑ +1.14 GW vs yesterday
Peak demand12:15
37.80 GWHighest 15-minute grid demand period
↓ −0.03 GW vs yesterday
Lowest demand00:45
23.92 GWLowest 15-minute grid demand period
↑ +1.28 GW vs yesterday
Domestic generationSupply
29.05 GWTracked UK generation sources only
↑ +1.54 GW vs yesterday
Average carbonCO₂
116 gCO₂/kWhCarbon intensity average
↓ −78 g vs yesterday
Renewable shareClean
61.9 %Wind, solar, hydro and biomass
↑ +22.9 pts vs yesterday
Clean share+ Nuclear
76.0 %Renewables plus nuclear
↑ +22.0 pts vs yesterday
Net importsFlow
1.70 GWAverage imports minus exports
↓ −0.07 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 29 September 2026, Britain’s electricity grid averaged 31.96 GW of grid demand, with renewables averaging 61.9% of tracked domestic generation and carbon intensity averaging 116 gCO₂/kWh.

The highest demand period was 37.80 GW at 12:15, while the lowest carbon intensity period was 81 gCO₂/kWh at 10:30.

Key records for 29 September 2026

Highest wind16.14 GW23:30
Highest solar7.32 GW11:30
Highest gas11.51 GW18:30
Lowest carbon81 gCO₂/kWh10:30
Highest imports5.96 GW11:00
Highest exports4.23 GW06:00

Daily chart

Demand, generation and carbon intensity

29 September 2026

Generation mix

Wind, solar, gas and interconnector flow