Electricity Live

Great Britain’s electricity on Monday 29 December 2025

On Monday 29 December, demand averaged 32.4 GW. Renewables supplied 23%.

32.4GW AVERAGEWind7.19 GW21%Hydro0.55 GW2%Biomass2.88 GW8%Solar0.17 GW1%Gas13.05 GW38%Imports6.24 GW18%Nuclear3.88 GW11%32.4GW AVERAGE21%8%38%18%11%
Price
£84.45/MWh
Day average £84.45
Demand32.4GW
Generation 27.7Transfers 4.7
Fossil fuels38%
Renewables23%
Other38%
Carbon intensityHigh
179g/kWh
0Day average 179300
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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 Monday 29 December 2025, gas supplied 38% of Great Britain’s electricity and wind 21%. Demand peaked at 40.2 GW at 18:05. Carbon intensity averaged 179 g/kWh and the price £84.45/MWh. Wind generation peaked at 11.3 GW at 19:10. Solar generation peaked at 1.0 GW at 11:30. Carbon intensity was lowest at 23:30 (95 g/kWh) and highest at 07:00 (216 g/kWh). The wholesale price ranged from £68.89/MWh at 03:00 to £101.68/MWh at 17:30. Gas made 47% 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 0.170.5%Wind 7.1921.2%Gas 13.0538.4%Hydro 0.551.6%Biomass 2.888.5%Nuclear 3.8811.4%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 32.4avgGeneration 27.7avgTransfers 4.7avg
The day in figurespeaks, averages, totals
Peak demand40.2GW · 18:05
Low 23.7 · 05:05Avg 32.40–60 GW
Made in Great Britain85%of demand
Generation 27.7Transfers 4.7 GW
Net imports110GWh
In
146 Out
36
Zero-carbon share43%of generation
Nuclear 14%Hydro 2%Wind 26%Solar 1%

Transfers · Mon 29 Dec

Interconnectors and storage

On Monday 29 December 2025, Great Britain imported 146 GWh and exported 36 GWh through its interconnectors. The most came from France (52 GWh), and the most exports went to Ireland (34 GWh).

All interconnectors

Mon 29 Dec
Imported
146GWh
Exported
36GWh
Net in
110GWh
Average net flow
4.60GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.61GWImporting

In 15.2 GWhOut 0.5 GWh

Denmark

Viking Link

Average1.39GWImporting

In 33.3 GWhOut 0.0 GWh

France

IFA · IFA2 · ElecLink

Average2.18GWImporting

In 52.4 GWhOut 0.1 GWh

Ireland

Moyle · East–West · Greenlink

Average1.41GWExporting

In 0.0 GWhOut 33.9 GWh

Netherlands

BritNed

Average0.43GWImporting

In 12.0 GWhOut 1.6 GWh

Norway

North Sea Link

Average1.40GWImporting

In 33.5 GWhOut 0.0 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.11GWGenerating

Generated 3.4 GWhPumped 0.9 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.