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Daily UK grid report
UK Electricity Grid Daily Report — 13 September 2023

On 13 September 2023, Britain’s electricity grid averaged 30.32 GW of grid demand, with renewables averaging 36.2% of tracked domestic generation and carbon intensity averaging 181 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 30.32 GW

Average grid demand for this UK day.

Peak demand 35.79 GW

Highest 15-minute grid demand period.

Avg carbon 181 gCO₂/kWh

Average carbon intensity where available.

Renewables 36.2 %

Average renewable share of tracked generation.

Average grid demandDemand
30.32 GWFull-day average from available snapshots
↓ −1.09 GW vs yesterday
Peak demand17:00
35.79 GWHighest 15-minute grid demand period
↓ −0.93 GW vs yesterday
Lowest demand04:15
22.89 GWLowest 15-minute grid demand period
↓ −1.45 GW vs yesterday
Domestic generationSupply
28.14 GWTracked UK generation sources only
↓ −1.50 GW vs yesterday
Average carbonCO₂
181 gCO₂/kWhCarbon intensity average
↓ −57 g vs yesterday
Renewable shareClean
36.2 %Wind, solar, hydro and biomass
↑ +13.1 pts vs yesterday
Clean share+ Nuclear
55.0 %Renewables plus nuclear
↑ +14.1 pts vs yesterday
Net importsFlow
0.18 GWAverage imports minus exports
↑ +1.08 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 13 September 2023, Britain’s electricity grid averaged 30.32 GW of grid demand, with renewables averaging 36.2% of tracked domestic generation and carbon intensity averaging 181 gCO₂/kWh.

The highest demand period was 35.79 GW at 17:00, while the lowest carbon intensity period was 136 gCO₂/kWh at 02:00.

Key records for 13 September 2023

Highest wind8.85 GW23:00
Highest solar7.20 GW13:00
Highest gas16.22 GW17:30
Lowest carbon136 gCO₂/kWh02:00
Highest imports4.01 GW09:00
Highest exports4.42 GW22:00

Daily chart

Demand, generation and carbon intensity

13 September 2023

Generation mix

Wind, solar, gas and interconnector flow