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Daily UK grid report
UK Electricity Grid Daily Report — 20 December 2024

On 20 December 2024, Britain’s electricity grid averaged 36.55 GW of grid demand, with renewables averaging 65.9% of tracked domestic generation and carbon intensity averaging 68 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 36.55 GW

Average grid demand for this UK day.

Peak demand 43.15 GW

Highest 15-minute grid demand period.

Avg carbon 68 gCO₂/kWh

Average carbon intensity where available.

Renewables 65.9 %

Average renewable share of tracked generation.

Average grid demandDemand
36.55 GWFull-day average from available snapshots
↓ −0.51 GW vs yesterday
Peak demand11:00
43.15 GWHighest 15-minute grid demand period
↓ −1.75 GW vs yesterday
Lowest demand04:15
26.75 GWLowest 15-minute grid demand period
↓ −0.61 GW vs yesterday
Domestic generationSupply
31.09 GWTracked UK generation sources only
↓ −1.01 GW vs yesterday
Average carbonCO₂
68 gCO₂/kWhCarbon intensity average
↑ +5 g vs yesterday
Renewable shareClean
65.9 %Wind, solar, hydro and biomass
↓ −2.0 pts vs yesterday
Clean share+ Nuclear
81.7 %Renewables plus nuclear
↓ −1.3 pts vs yesterday
Net importsFlow
5.02 GWAverage imports minus exports
↑ +0.33 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 20 December 2024, Britain’s electricity grid averaged 36.55 GW of grid demand, with renewables averaging 65.9% of tracked domestic generation and carbon intensity averaging 68 gCO₂/kWh.

The highest demand period was 43.15 GW at 11:00, while the lowest carbon intensity period was 34 gCO₂/kWh at 00:00.

Key records for 20 December 2024

Highest wind20.48 GW14:00
Highest solar2.48 GW11:00
Highest gas9.25 GW08:30
Lowest carbon34 gCO₂/kWh00:00
Highest imports6.83 GW12:00
Highest exports2.12 GW05:45

Daily chart

Demand, generation and carbon intensity

20 December 2024

Generation mix

Wind, solar, gas and interconnector flow