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Daily UK grid report
UK Electricity Grid Daily Report — 20 December 2023

On 20 December 2023, Britain’s electricity grid averaged 36.02 GW of grid demand, with renewables averaging 73.1% of tracked domestic generation and carbon intensity averaging 54 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 36.02 GW

Average grid demand for this UK day.

Peak demand 43.23 GW

Highest 15-minute grid demand period.

Avg carbon 54 gCO₂/kWh

Average carbon intensity where available.

Renewables 73.1 %

Average renewable share of tracked generation.

Average grid demandDemand
36.02 GWFull-day average from available snapshots
↑ +0.42 GW vs yesterday
Peak demand17:00
43.23 GWHighest 15-minute grid demand period
↓ −0.55 GW vs yesterday
Lowest demand05:00
29.05 GWLowest 15-minute grid demand period
↑ +4.06 GW vs yesterday
Domestic generationSupply
32.68 GWTracked UK generation sources only
↓ −0.36 GW vs yesterday
Average carbonCO₂
54 gCO₂/kWhCarbon intensity average
↓ −60 g vs yesterday
Renewable shareClean
73.1 %Wind, solar, hydro and biomass
↑ +15.5 pts vs yesterday
Clean share+ Nuclear
87.5 %Renewables plus nuclear
↑ +15.4 pts vs yesterday
Net importsFlow
2.33 GWAverage imports minus exports
↑ +0.81 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 20 December 2023, Britain’s electricity grid averaged 36.02 GW of grid demand, with renewables averaging 73.1% of tracked domestic generation and carbon intensity averaging 54 gCO₂/kWh.

The highest demand period was 43.23 GW at 17:00, while the lowest carbon intensity period was 42 gCO₂/kWh at 13:00.

Key records for 20 December 2023

Highest wind21.66 GW17:00
Highest solar1.46 GW12:00
Highest gas4.70 GW07:30
Lowest carbon42 gCO₂/kWh13:00
Highest imports7.29 GW09:15
Highest exports4.53 GW03:00

Daily chart

Demand, generation and carbon intensity

20 December 2023

Generation mix

Wind, solar, gas and interconnector flow