Electricity Live

Great Britain’s electricity on Wednesday 17 December 2025

On Wednesday 17 December, demand averaged 36.9 GW. Renewables supplied 44%.

36.9GW AVERAGEWind16.87 GW42%Hydro0.54 GW1%Biomass2.77 GW7%Solar0.19 GW0%Gas12.88 GW32%Imports3.48 GW9%Nuclear3.59 GW9%36.9GW AVERAGE42%32%9%9%
Price
£77.17/MWh
Day average £77.17
Demand36.9GW
Generation 36.8Transfers 0.0
Fossil fuels32%
Renewables44%
Other24%
Carbon intensityModerate
138g/kWh
0Day average 138300
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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 17 December 2025, wind supplied 42% of Great Britain’s electricity and gas 32%. Demand peaked at 43.8 GW at 17:30. Carbon intensity averaged 138 g/kWh and the price £77.17/MWh. Wind generation peaked at 22.3 GW at 17:50. Solar generation peaked at 1.0 GW at 11:30. Carbon intensity was lowest at 23:00 (41 g/kWh) and highest at 06:30 (188 g/kWh). The wholesale price ranged from £59.53/MWh at 23:30 to £92.90/MWh at 08:30. 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 0.190.5%Wind 16.8741.8%Gas 12.8831.9%Hydro 0.541.3%Biomass 2.776.9%Nuclear 3.598.9%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 36.9avgGeneration 36.8avgTransfers 0.0avg
The day in figurespeaks, averages, totals
Peak demand43.8GW · 17:30
Low 27.2 · 05:05Avg 36.90–60 GW
Made in Great Britain100%of demand
Generation 36.8Transfers 0.0 GW
Net imports7GWh
In
81 Out
74
Zero-carbon share58%of generation
Nuclear 10%Hydro 1%Wind 46%Solar 1%

Transfers · Wed 17 Dec

Interconnectors and storage

On Wednesday 17 December 2025, Great Britain imported 81 GWh and exported 74 GWh through its interconnectors. The most came from France (55 GWh), and the most exports went to Denmark (21 GWh).

All interconnectors

Wed 17 Dec
Imported
81GWh
Exported
74GWh
Net in
7GWh
Average net flow
0.29GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.75GWExporting

In 0.0 GWhOut 18.0 GWh

Denmark

Viking Link

Average0.82GWExporting

In 0.9 GWhOut 20.6 GWh

France

IFA · IFA2 · ElecLink

Average2.10GWImporting

In 54.6 GWhOut 4.1 GWh

Ireland

Moyle · East–West · Greenlink

Average0.35GWExporting

In 4.5 GWhOut 12.9 GWh

Netherlands

BritNed

Average0.77GWExporting

In 0.0 GWhOut 18.5 GWh

Norway

North Sea Link

Average0.88GWImporting

In 21.1 GWhOut 0.0 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.27GWPumping

Generated 2.5 GWhPumped 8.9 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.