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Daily UK grid report
UK Electricity Grid Daily Report — 15 December 2023

On 15 December 2023, Britain’s electricity grid averaged 36.28 GW of grid demand, with renewables averaging 49.6% of tracked domestic generation and carbon intensity averaging 155 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 36.28 GW

Average grid demand for this UK day.

Peak demand 43.76 GW

Highest 15-minute grid demand period.

Avg carbon 155 gCO₂/kWh

Average carbon intensity where available.

Renewables 49.6 %

Average renewable share of tracked generation.

Average grid demandDemand
36.28 GWFull-day average from available snapshots
↓ −2.35 GW vs yesterday
Peak demand17:00
43.76 GWHighest 15-minute grid demand period
↓ −2.08 GW vs yesterday
Lowest demand04:15
26.34 GWLowest 15-minute grid demand period
↓ −1.80 GW vs yesterday
Domestic generationSupply
35.70 GWTracked UK generation sources only
↓ −2.12 GW vs yesterday
Average carbonCO₂
155 gCO₂/kWhCarbon intensity average
↓ −48 g vs yesterday
Renewable shareClean
49.6 %Wind, solar, hydro and biomass
↑ +11.3 pts vs yesterday
Clean share+ Nuclear
63.3 %Renewables plus nuclear
↑ +11.9 pts vs yesterday
Net importsFlow
-0.69 GWAverage imports minus exports
↑ +0.77 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 15 December 2023, Britain’s electricity grid averaged 36.28 GW of grid demand, with renewables averaging 49.6% of tracked domestic generation and carbon intensity averaging 155 gCO₂/kWh.

The highest demand period was 43.76 GW at 17:00, while the lowest carbon intensity period was 63 gCO₂/kWh at 23:30.

Key records for 15 December 2023

Highest wind17.36 GW22:30
Highest solar1.16 GW12:30
Highest gas19.11 GW10:30
Lowest carbon63 gCO₂/kWh23:30
Highest imports2.83 GW21:00
Highest exports5.20 GW06:45

Daily chart

Demand, generation and carbon intensity

15 December 2023

Generation mix

Wind, solar, gas and interconnector flow