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Daily UK grid report
UK Electricity Grid Daily Report — 4 December 2023

On 4 December 2023, Britain’s electricity grid averaged 37.52 GW of grid demand, with renewables averaging 46.2% of tracked domestic generation and carbon intensity averaging 174 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 37.52 GW

Average grid demand for this UK day.

Peak demand 44.70 GW

Highest 15-minute grid demand period.

Avg carbon 174 gCO₂/kWh

Average carbon intensity where available.

Renewables 46.2 %

Average renewable share of tracked generation.

Average grid demandDemand
37.52 GWFull-day average from available snapshots
↑ +1.92 GW vs yesterday
Peak demand17:00
44.70 GWHighest 15-minute grid demand period
↑ +0.32 GW vs yesterday
Lowest demand04:15
26.52 GWLowest 15-minute grid demand period
↓ −0.99 GW vs yesterday
Domestic generationSupply
35.63 GWTracked UK generation sources only
↑ +4.36 GW vs yesterday
Average carbonCO₂
174 gCO₂/kWhCarbon intensity average
↓ −35 g vs yesterday
Renewable shareClean
46.2 %Wind, solar, hydro and biomass
↑ +12.9 pts vs yesterday
Clean share+ Nuclear
60.3 %Renewables plus nuclear
↑ +11.2 pts vs yesterday
Net importsFlow
1.54 GWAverage imports minus exports
↓ −2.46 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 4 December 2023, Britain’s electricity grid averaged 37.52 GW of grid demand, with renewables averaging 46.2% of tracked domestic generation and carbon intensity averaging 174 gCO₂/kWh.

The highest demand period was 44.70 GW at 17:00, while the lowest carbon intensity period was 106 gCO₂/kWh at 23:30.

Key records for 4 December 2023

Highest wind14.31 GW08:30
Highest solar0.55 GW11:00
Highest gas19.80 GW09:30
Lowest carbon106 gCO₂/kWh23:30
Highest imports6.34 GW01:00
Highest exports3.62 GW07:45

Daily chart

Demand, generation and carbon intensity

4 December 2023

Generation mix

Wind, solar, gas and interconnector flow