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

On 4 January 2023, Britain’s electricity grid averaged 33.85 GW of grid demand, with renewables averaging 66.6% of tracked domestic generation and carbon intensity averaging 60 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 33.85 GW

Average grid demand for this UK day.

Peak demand 41.19 GW

Highest 15-minute grid demand period.

Avg carbon 60 gCO₂/kWh

Average carbon intensity where available.

Renewables 66.6 %

Average renewable share of tracked generation.

Average grid demandDemand
33.85 GWFull-day average from available snapshots
↑ +0.06 GW vs yesterday
Peak demand17:45
41.19 GWHighest 15-minute grid demand period
↓ −1.22 GW vs yesterday
Lowest demand23:45
26.72 GWLowest 15-minute grid demand period
↑ +3.54 GW vs yesterday
Domestic generationSupply
30.34 GWTracked UK generation sources only
↓ −0.21 GW vs yesterday
Average carbonCO₂
60 gCO₂/kWhCarbon intensity average
↓ −39 g vs yesterday
Renewable shareClean
66.6 %Wind, solar, hydro and biomass
↑ +7.2 pts vs yesterday
Clean share+ Nuclear
85.3 %Renewables plus nuclear
↑ +6.4 pts vs yesterday
Net importsFlow
2.82 GWAverage imports minus exports
↓ −0.29 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 4 January 2023, Britain’s electricity grid averaged 33.85 GW of grid demand, with renewables averaging 66.6% of tracked domestic generation and carbon intensity averaging 60 gCO₂/kWh.

The highest demand period was 41.19 GW at 17:45, while the lowest carbon intensity period was 42 gCO₂/kWh at 22:00.

Key records for 4 January 2023

Highest wind19.92 GW05:30
Highest solar2.11 GW13:00
Highest gas6.73 GW17:30
Lowest carbon42 gCO₂/kWh22:00
Highest imports6.11 GW20:00
Highest exports4.74 GW04:00

Daily chart

Demand, generation and carbon intensity

4 January 2023

Generation mix

Wind, solar, gas and interconnector flow