Electricity Live

Great Britain’s electricity on Wednesday 20 December 2023

On Wednesday 20 December, demand averaged 34.2 GW. Renewables supplied 59%.

34.2GW AVERAGEWind20.57 GW57%Hydro0.60 GW2%Biomass2.53 GW7%Solar0.22 GW1%Gas3.44 GW10%Imports3.91 GW11%Nuclear4.69 GW13%34.2GW AVERAGE57%7%10%11%13%
Price
£41.72/MWh
Day average £41.72
Demand34.2GW
Generation 32.0Transfers 2.2
Fossil fuels10%
Renewables59%
Other31%
Carbon intensityLow
52g/kWh
0Day average 52300
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Recorded half-hourRecorded half-hourRecorded half-hourRecorded half-hourRecorded half-hourRecorded half-hourRecorded half-hourRecorded half-hourRecorded half-hourRecorded half-hourRecorded half-hour

Records set on this day

All records

Key moments

On Wednesday 20 December 2023, wind supplied 57% of Great Britain’s electricity and nuclear 13%. Demand peaked at 41.9 GW at 17:05. Carbon intensity averaged 52 g/kWh and the price £41.72/MWh. Wind generation peaked at 21.8 GW at 17:25. Solar generation peaked at 1.5 GW at 12:00. Carbon intensity was lowest at 12:30 (38 g/kWh) and highest at 07:00 (69 g/kWh). The wholesale price ranged from −£19.03/MWh at 04:30 to £77.16/MWh at 07:30. The price was below zero for 1 hours. Wind made 64% of the electricity generated in Great Britain, compared with 33% across 2023.

Charts

Generation, demand, price and carbon

Generation by sourceGW · daily average below
Solar 0.220.6%Wind 20.5757.2%Gas 3.449.6%Hydro 0.601.7%Biomass 2.537.0%Nuclear 4.6913.1%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 34.2avgGeneration 32.0avgTransfers 2.2avg
The day in figurespeaks, averages, totals
Peak demand41.9GW · 17:05
Low 24.9 · 03:45Avg 34.20–60 GW
Made in Great Britain94%of demand
Generation 32.0Transfers 2.2 GW
Net imports54GWh
In
87 Out
32
Zero-carbon share81%of generation
Nuclear 15%Hydro 2%Wind 64%Solar 1%

Transfers · Wed 20 Dec

Interconnectors and storage

On Wednesday 20 December 2023, Great Britain imported 87 GWh and exported 32 GWh through its interconnectors. The most came from France (30 GWh), and the most exports went to France (16 GWh).

All interconnectors

Wed 20 Dec
Imported
87GWh
Exported
32GWh
Net in
54GWh
Average net flow
2.27GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.19GWImporting

In 11.1 GWhOut 6.6 GWh

Denmark

Viking Link

Average0.53GWImporting

In 12.7 GWhOut 0.0 GWh

France

IFA · IFA2 · ElecLink

Average0.58GWImporting

In 30.4 GWhOut 16.5 GWh

Ireland

Moyle · East–West · Greenlink

Average0.09GWImporting

In 5.4 GWhOut 3.3 GWh

Netherlands

BritNed

Average0.09GWImporting

In 5.8 GWhOut 3.6 GWh

Norway

North Sea Link

Average0.80GWImporting

In 21.2 GWhOut 2.1 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.09GWPumping

Generated 7.3 GWhPumped 9.5 GWh

All cards share one scale, so you can compare their heights. Each country can have more than one cable.

Download the 5-minute data for this day: CSV · JSON. See what the figures mean.