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Daily UK grid report
UK Electricity Grid Daily Report — 19 September 2023

On 19 September 2023, Britain’s electricity grid averaged 30.45 GW of grid demand, with renewables averaging 66.0% of tracked domestic generation and carbon intensity averaging 57 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 30.45 GW

Average grid demand for this UK day.

Peak demand 35.37 GW

Highest 15-minute grid demand period.

Avg carbon 57 gCO₂/kWh

Average carbon intensity where available.

Renewables 66.0 %

Average renewable share of tracked generation.

Average grid demandDemand
30.45 GWFull-day average from available snapshots
↑ +0.76 GW vs yesterday
Peak demand17:00
35.37 GWHighest 15-minute grid demand period
↑ +0.04 GW vs yesterday
Lowest demand02:30
23.93 GWLowest 15-minute grid demand period
↑ +2.74 GW vs yesterday
Domestic generationSupply
27.49 GWTracked UK generation sources only
↑ +1.60 GW vs yesterday
Average carbonCO₂
57 gCO₂/kWhCarbon intensity average
↓ −9 g vs yesterday
Renewable shareClean
66.0 %Wind, solar, hydro and biomass
↑ +4.8 pts vs yesterday
Clean share+ Nuclear
84.9 %Renewables plus nuclear
↑ +2.8 pts vs yesterday
Net importsFlow
2.00 GWAverage imports minus exports
↓ −0.96 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 19 September 2023, Britain’s electricity grid averaged 30.45 GW of grid demand, with renewables averaging 66.0% of tracked domestic generation and carbon intensity averaging 57 gCO₂/kWh.

The highest demand period was 35.37 GW at 17:00, while the lowest carbon intensity period was 37 gCO₂/kWh at 21:30.

Key records for 19 September 2023

Highest wind18.05 GW20:30
Highest solar2.20 GW12:00
Highest gas4.90 GW19:30
Lowest carbon37 gCO₂/kWh21:30
Highest imports5.48 GW16:45
Highest exports3.80 GW05:00

Daily chart

Demand, generation and carbon intensity

19 September 2023

Generation mix

Wind, solar, gas and interconnector flow