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Daily UK grid report
UK Electricity Grid Daily Report — 21 January 2024

On 21 January 2024, Britain’s electricity grid averaged 33.88 GW of grid demand, with renewables averaging 69.9% of tracked domestic generation and carbon intensity averaging 84 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 33.88 GW

Average grid demand for this UK day.

Peak demand 43.32 GW

Highest 15-minute grid demand period.

Avg carbon 84 gCO₂/kWh

Average carbon intensity where available.

Renewables 69.9 %

Average renewable share of tracked generation.

Average grid demandDemand
33.88 GWFull-day average from available snapshots
↓ −2.73 GW vs yesterday
Peak demand17:00
43.32 GWHighest 15-minute grid demand period
↑ +0.24 GW vs yesterday
Lowest demand04:45
26.42 GWLowest 15-minute grid demand period
↓ −3.55 GW vs yesterday
Domestic generationSupply
28.97 GWTracked UK generation sources only
↓ −4.93 GW vs yesterday
Average carbonCO₂
84 gCO₂/kWhCarbon intensity average
↓ −36 g vs yesterday
Renewable shareClean
69.9 %Wind, solar, hydro and biomass
↑ +6.1 pts vs yesterday
Clean share+ Nuclear
78.6 %Renewables plus nuclear
↑ +7.3 pts vs yesterday
Net importsFlow
5.05 GWAverage imports minus exports
↑ +3.29 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 21 January 2024, Britain’s electricity grid averaged 33.88 GW of grid demand, with renewables averaging 69.9% of tracked domestic generation and carbon intensity averaging 84 gCO₂/kWh.

The highest demand period was 43.32 GW at 17:00, while the lowest carbon intensity period was 57 gCO₂/kWh at 09:30.

Key records for 21 January 2024

Highest wind20.94 GW00:00
Highest solar1.88 GW12:00
Highest gas9.84 GW17:00
Lowest carbon57 gCO₂/kWh09:30
Highest imports7.53 GW11:30
Highest exports1.38 GW05:30

Daily chart

Demand, generation and carbon intensity

21 January 2024

Generation mix

Wind, solar, gas and interconnector flow