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Daily UK grid report
UK Electricity Grid Daily Report — 11 September 2023

On 11 September 2023, Britain’s electricity grid averaged 31.04 GW of grid demand, with renewables averaging 28.4% of tracked domestic generation and carbon intensity averaging 212 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 31.04 GW

Average grid demand for this UK day.

Peak demand 36.05 GW

Highest 15-minute grid demand period.

Avg carbon 212 gCO₂/kWh

Average carbon intensity where available.

Renewables 28.4 %

Average renewable share of tracked generation.

Average grid demandDemand
31.04 GWFull-day average from available snapshots
↑ +3.42 GW vs yesterday
Peak demand12:00
36.05 GWHighest 15-minute grid demand period
↑ +2.77 GW vs yesterday
Lowest demand03:00
23.23 GWLowest 15-minute grid demand period
↑ +1.14 GW vs yesterday
Domestic generationSupply
29.08 GWTracked UK generation sources only
↑ +5.28 GW vs yesterday
Average carbonCO₂
212 gCO₂/kWhCarbon intensity average
↑ +2 g vs yesterday
Renewable shareClean
28.4 %Wind, solar, hydro and biomass
↑ +7.2 pts vs yesterday
Clean share+ Nuclear
46.7 %Renewables plus nuclear
↑ +3.1 pts vs yesterday
Net importsFlow
-0.20 GWAverage imports minus exports
↓ −2.36 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 11 September 2023, Britain’s electricity grid averaged 31.04 GW of grid demand, with renewables averaging 28.4% of tracked domestic generation and carbon intensity averaging 212 gCO₂/kWh.

The highest demand period was 36.05 GW at 12:00, while the lowest carbon intensity period was 147 gCO₂/kWh at 03:00.

Key records for 11 September 2023

Highest wind7.30 GW03:00
Highest solar5.39 GW12:00
Highest gas18.96 GW19:30
Lowest carbon147 gCO₂/kWh03:00
Highest imports3.55 GW12:00
Highest exports4.72 GW06:00

Daily chart

Demand, generation and carbon intensity

11 September 2023

Generation mix

Wind, solar, gas and interconnector flow