Electricity Live

Great Britain’s electricity on Saturday 4 January 2025

On Saturday 4 January, demand averaged 34.0 GW. Renewables supplied 19%.

34.0GW AVERAGEWind5.49 GW16%Hydro0.85 GW2%Biomass2.31 GW7%Solar0.24 GW1%Gas15.68 GW45%Imports5.29 GW15%Nuclear5.00 GW14%34.0GW AVERAGE16%45%15%14%
Price
£107.92/MWh
Day average £107.92
Demand34.0GW
Generation 29.6Transfers 4.4
Fossil fuels45%
Renewables19%
Other36%
Carbon intensityHigh
192g/kWh
0Day average 192300
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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

Key moments

On Saturday 4 January 2025, gas supplied 45% of Great Britain’s electricity and wind 16%. Demand peaked at 41.4 GW at 18:45. Carbon intensity averaged 192 g/kWh and the price £107.92/MWh. Wind generation peaked at 9.9 GW at 23:55. Solar generation peaked at 1.5 GW at 12:00. Carbon intensity was lowest at 23:30 (92 g/kWh) and highest at 08:00 (221 g/kWh). The wholesale price ranged from £90.83/MWh at 03:30 to £139.01/MWh at 18:00. Gas made 53% of the electricity generated in Great Britain, compared with 32% across 2025.

Charts

Generation, demand, price and carbon

Generation by sourceGW · daily average below
Solar 0.240.7%Wind 5.4915.8%Gas 15.6845.0%Hydro 0.852.4%Biomass 2.316.6%Nuclear 5.0014.3%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 34.0avgGeneration 29.6avgTransfers 4.4avg
The day in figurespeaks, averages, totals
Peak demand41.4GW · 18:45
Low 25.5 · 05:00Avg 34.00–60 GW
Made in Great Britain87%of demand
Generation 29.6Transfers 4.4 GW
Net imports104GWh
In
122 Out
18
Zero-carbon share39%of generation
Nuclear 17%Hydro 3%Wind 19%Solar 1%

Transfers · Sat 4 Jan

Interconnectors and storage

On Saturday 4 January 2025, Great Britain imported 122 GWh and exported 18 GWh through its interconnectors. The most came from France (48 GWh), and the most exports went to Ireland (18 GWh).

All interconnectors

Sat 4 Jan
Imported
122GWh
Exported
18GWh
Net in
104GWh
Average net flow
4.34GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.83GWImporting

In 20.0 GWhOut 0.0 GWh

Denmark

Viking Link

Average0.86GWImporting

In 20.7 GWhOut 0.0 GWh

France

IFA · IFA2 · ElecLink

Average2.00GWImporting

In 48.0 GWhOut 0.0 GWh

Ireland

Moyle · East–West · Greenlink

Average0.75GWExporting

In 0.0 GWhOut 18.1 GWh

Netherlands

BritNed

Average0.00GWIdle

In 0.0 GWhOut 0.0 GWh

Norway

North Sea Link

Average1.40GWImporting

In 33.5 GWhOut 0.0 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.10GWGenerating

Generated 4.8 GWhPumped 2.4 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.