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Daily UK grid report
UK Electricity Grid Daily Report — 29 December 2023

On 29 December 2023, Britain’s electricity grid averaged 32.44 GW of grid demand, with renewables averaging 66.3% 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 32.44 GW

Average grid demand for this UK day.

Peak demand 38.94 GW

Highest 15-minute grid demand period.

Avg carbon 54 gCO₂/kWh

Average carbon intensity where available.

Renewables 66.3 %

Average renewable share of tracked generation.

Average grid demandDemand
32.44 GWFull-day average from available snapshots
↓ −0.28 GW vs yesterday
Peak demand17:30
38.94 GWHighest 15-minute grid demand period
↑ +0.59 GW vs yesterday
Lowest demand04:00
26.20 GWLowest 15-minute grid demand period
↓ −0.90 GW vs yesterday
Domestic generationSupply
28.66 GWTracked UK generation sources only
↓ −1.61 GW vs yesterday
Average carbonCO₂
54 gCO₂/kWhCarbon intensity average
↑ +14 g vs yesterday
Renewable shareClean
66.3 %Wind, solar, hydro and biomass
↓ −5.5 pts vs yesterday
Clean share+ Nuclear
84.7 %Renewables plus nuclear
↓ −4.5 pts vs yesterday
Net importsFlow
2.53 GWAverage imports minus exports
↑ +1.26 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 29 December 2023, Britain’s electricity grid averaged 32.44 GW of grid demand, with renewables averaging 66.3% of tracked domestic generation and carbon intensity averaging 54 gCO₂/kWh.

The highest demand period was 38.94 GW at 17:30, while the lowest carbon intensity period was 44 gCO₂/kWh at 12:30.

Key records for 29 December 2023

Highest wind19.38 GW06:00
Highest solar2.24 GW12:30
Highest gas5.89 GW17:30
Lowest carbon44 gCO₂/kWh12:30
Highest imports6.74 GW19:00
Highest exports4.49 GW04:45

Daily chart

Demand, generation and carbon intensity

29 December 2023

Generation mix

Wind, solar, gas and interconnector flow