Electricity Live

Great Britain’s electricity on Wednesday 4 January 2023

On Wednesday 4 January, demand averaged 32.4 GW. Renewables supplied 57%.

32.4GW AVERAGEWind18.36 GW54%Hydro0.62 GW2%Biomass0.83 GW2%Solar0.34 GW1%Gas3.79 GW11%Coal0.12 GW0%Imports4.40 GW13%Nuclear5.63 GW17%32.4GW AVERAGE54%11%13%17%
Price
£73.61/MWh
Day average £73.61
Demand32.4GW
Generation 29.7Transfers 2.7
Fossil fuels11%
Renewables57%
Other32%
Carbon intensityLow
66g/kWh
0Day average 66300
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Recorded 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 4 January 2023, wind supplied 54% of Great Britain’s electricity and nuclear 17%. Demand peaked at 40.4 GW at 17:25. Carbon intensity averaged 66 g/kWh and the price £73.61/MWh. Wind generation peaked at 20.2 GW at 05:40. Solar generation peaked at 2.1 GW at 13:00. Carbon intensity was lowest at 22:00 (51 g/kWh) and highest at 17:30 (92 g/kWh). The wholesale price ranged from −£49.75/MWh at 04:00 to £160.55/MWh at 17:30. The price was below zero for 4 hours. Wind made 62% 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 0.341.0%Wind 18.3653.9%Gas 3.7911.1%Hydro 0.621.8%Biomass 0.832.4%Nuclear 5.6316.5%Coal 0.120.4%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 32.4avgGeneration 29.7avgTransfers 2.7avg
The day in figurespeaks, averages, totals
Peak demand40.4GW · 17:25
Low 22.8 · 04:25Avg 32.40–60 GW
Made in Great Britain92%of demand
Generation 29.7Transfers 2.7 GW
Net imports67GWh
In
95 Out
28
Zero-carbon share84%of generation
Nuclear 19%Hydro 2%Wind 62%Solar 1%

Transfers · Wed 4 Jan

Interconnectors and storage

On Wednesday 4 January 2023, Great Britain imported 95 GWh and exported 28 GWh through its interconnectors. The most came from France (47 GWh), and the most exports went to France (10 GWh).

All interconnectors

Wed 4 Jan
Imported
95GWh
Exported
28GWh
Net in
67GWh
Average net flow
2.80GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.53GWImporting

In 15.5 GWhOut 2.7 GWh

Denmark

Viking Link

Average0.00GWIdle

In 0.0 GWhOut 0.0 GWh

France

IFA · IFA2 · ElecLink

Average1.53GWImporting

In 46.8 GWhOut 10.1 GWh

Ireland

Moyle · East–West · Greenlink

Average0.07GWExporting

In 4.1 GWhOut 5.8 GWh

Netherlands

BritNed

Average0.38GWImporting

In 12.8 GWhOut 3.5 GWh

Norway

North Sea Link

Average0.42GWImporting

In 16.0 GWhOut 5.8 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.11GWPumping

Generated 10.5 GWhPumped 13.2 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.