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Daily UK grid report
UK Electricity Grid Daily Report — 15 September 2023

On 15 September 2023, Britain’s electricity grid averaged 29.60 GW of grid demand, with renewables averaging 26.1% of tracked domestic generation and carbon intensity averaging 198 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 29.60 GW

Average grid demand for this UK day.

Peak demand 35.27 GW

Highest 15-minute grid demand period.

Avg carbon 198 gCO₂/kWh

Average carbon intensity where available.

Renewables 26.1 %

Average renewable share of tracked generation.

Average grid demandDemand
29.60 GWFull-day average from available snapshots
↓ −0.87 GW vs yesterday
Peak demand12:00
35.27 GWHighest 15-minute grid demand period
↓ −0.19 GW vs yesterday
Lowest demand01:30
22.66 GWLowest 15-minute grid demand period
↓ −0.46 GW vs yesterday
Domestic generationSupply
25.61 GWTracked UK generation sources only
↓ −2.73 GW vs yesterday
Average carbonCO₂
198 gCO₂/kWhCarbon intensity average
↑ +16 g vs yesterday
Renewable shareClean
26.1 %Wind, solar, hydro and biomass
↓ −10.0 pts vs yesterday
Clean share+ Nuclear
46.9 %Renewables plus nuclear
↓ −7.9 pts vs yesterday
Net importsFlow
2.50 GWAverage imports minus exports
↑ +2.31 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 15 September 2023, Britain’s electricity grid averaged 29.60 GW of grid demand, with renewables averaging 26.1% of tracked domestic generation and carbon intensity averaging 198 gCO₂/kWh.

The highest demand period was 35.27 GW at 12:00, while the lowest carbon intensity period was 135 gCO₂/kWh at 23:30.

Key records for 15 September 2023

Highest wind5.46 GW20:00
Highest solar7.65 GW12:00
Highest gas15.60 GW18:30
Lowest carbon135 gCO₂/kWh23:30
Highest imports6.39 GW13:15
Highest exports2.93 GW05:00

Daily chart

Demand, generation and carbon intensity

15 September 2023

Generation mix

Wind, solar, gas and interconnector flow