Electricity Live

Great Britain’s electricity on Wednesday 31 December 2025

On Wednesday 31 December, demand averaged 34.0 GW. Renewables supplied 43%.

34.0GW AVERAGEWind13.82 GW38%Hydro0.41 GW1%Biomass2.86 GW8%Solar1.12 GW3%Gas7.92 GW22%Imports5.68 GW16%Nuclear4.08 GW11%34.0GW AVERAGE38%8%22%16%11%
Price
£72.64/MWh
Day average £72.64
Demand34.0GW
Generation 30.2Transfers 3.8
Fossil fuels22%
Renewables43%
Other35%
Carbon intensityModerate
116g/kWh
0Day average 116300
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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 Wednesday 31 December 2025, wind supplied 38% of Great Britain’s electricity and gas 22%. Demand peaked at 41.3 GW at 18:00. Carbon intensity averaged 116 g/kWh and the price £72.64/MWh. Wind generation peaked at 18.1 GW at 19:30. Solar generation peaked at 6.2 GW at 12:00. Carbon intensity was lowest at 04:30 (92 g/kWh) and highest at 16:00 (151 g/kWh). The wholesale price ranged from £49.09/MWh at 22:30 to £97.72/MWh at 17:30. Wind made 46% of the electricity generated in Great Britain, compared with 35% across 2025.

Charts

Generation, demand, price and carbon

Generation by sourceGW · daily average below
Solar 1.123.1%Wind 13.8238.5%Gas 7.9222.1%Hydro 0.411.2%Biomass 2.868.0%Nuclear 4.0811.4%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 34.0avgGeneration 30.2avgTransfers 3.8avg
The day in figurespeaks, averages, totals
Peak demand41.3GW · 18:00
Low 25.5 · 05:00Avg 34.00–60 GW
Made in Great Britain89%of demand
Generation 30.2Transfers 3.8 GW
Net imports96GWh
In
134 Out
38
Zero-carbon share64%of generation
Nuclear 14%Hydro 1%Wind 46%Solar 4%

Transfers · Wed 31 Dec

Interconnectors and storage

On Wednesday 31 December 2025, Great Britain imported 134 GWh and exported 38 GWh through its interconnectors. The most came from France (44 GWh), and the most exports went to Ireland (34 GWh).

All interconnectors

Wed 31 Dec
Imported
134GWh
Exported
38GWh
Net in
96GWh
Average net flow
3.99GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.49GWImporting

In 12.2 GWhOut 0.4 GWh

Denmark

Viking Link

Average1.17GWImporting

In 28.1 GWhOut 0.0 GWh

France

IFA · IFA2 · ElecLink

Average1.67GWImporting

In 43.6 GWhOut 3.5 GWh

Ireland

Moyle · East–West · Greenlink

Average1.43GWExporting

In 0.0 GWhOut 34.3 GWh

Netherlands

BritNed

Average0.71GWImporting

In 17.2 GWhOut 0.1 GWh

Norway

North Sea Link

Average1.38GWImporting

In 33.1 GWhOut 0.0 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.21GWPumping

Generated 2.1 GWhPumped 7.1 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.