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Daily UK grid report
UK Electricity Grid Daily Report — 31 December 2023

On 31 December 2023, Britain’s electricity grid averaged 29.84 GW of grid demand, with renewables averaging 61.0% of tracked domestic generation and carbon intensity averaging 73 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 29.84 GW

Average grid demand for this UK day.

Peak demand 37.07 GW

Highest 15-minute grid demand period.

Avg carbon 73 gCO₂/kWh

Average carbon intensity where available.

Renewables 61.0 %

Average renewable share of tracked generation.

Average grid demandDemand
29.84 GWFull-day average from available snapshots
↓ −0.61 GW vs yesterday
Peak demand17:00
37.07 GWHighest 15-minute grid demand period
↓ −0.80 GW vs yesterday
Lowest demand06:00
22.82 GWLowest 15-minute grid demand period
↑ +0.24 GW vs yesterday
Domestic generationSupply
25.38 GWTracked UK generation sources only
↑ +0.05 GW vs yesterday
Average carbonCO₂
73 gCO₂/kWhCarbon intensity average
↑ +17 g vs yesterday
Renewable shareClean
61.0 %Wind, solar, hydro and biomass
↓ −5.2 pts vs yesterday
Clean share+ Nuclear
79.5 %Renewables plus nuclear
↓ −6.2 pts vs yesterday
Net importsFlow
4.52 GWAverage imports minus exports
↓ −0.81 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 31 December 2023, Britain’s electricity grid averaged 29.84 GW of grid demand, with renewables averaging 61.0% of tracked domestic generation and carbon intensity averaging 73 gCO₂/kWh.

The highest demand period was 37.07 GW at 17:00, while the lowest carbon intensity period was 52 gCO₂/kWh at 00:00.

Key records for 31 December 2023

Highest wind16.02 GW00:00
Highest solar1.88 GW10:30
Highest gas7.85 GW17:30
Lowest carbon52 gCO₂/kWh00:00
Highest imports7.19 GW19:30
Highest exports3.04 GW04:00

Daily chart

Demand, generation and carbon intensity

31 December 2023

Generation mix

Wind, solar, gas and interconnector flow