Electricity Live

Great Britain’s electricity on Thursday 18 December 2025

On Thursday 18 December, demand averaged 35.8 GW. Renewables supplied 50%.

35.8GW AVERAGEWind18.07 GW48%Hydro0.56 GW2%Biomass2.09 GW6%Solar0.06 GW0%Gas6.28 GW17%Imports7.08 GW19%Nuclear3.39 GW9%35.8GW AVERAGE48%17%19%9%
Price
£61.91/MWh
Day average £61.91
Demand35.8GW
Generation 30.5Transfers 5.3
Fossil fuels17%
Renewables50%
Other33%
Carbon intensityLow
90g/kWh
0Day average 90300
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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 Thursday 18 December 2025, wind supplied 48% of Great Britain’s electricity and gas 17%. Demand peaked at 42.3 GW at 17:25. Carbon intensity averaged 90 g/kWh and the price £61.91/MWh. Wind generation peaked at 20.4 GW at 01:45. Carbon intensity was lowest at 01:00 (42 g/kWh) and highest at 12:30 (135 g/kWh). The wholesale price ranged from −£0.07/MWh at 23:30 to £86.48/MWh at 09:00. The price was below zero for 0.5 hours. Wind made 59% 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 0.060.2%Wind 18.0748.1%Gas 6.2816.7%Hydro 0.561.5%Biomass 2.095.6%Nuclear 3.399.0%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 35.8avgGeneration 30.5avgTransfers 5.3avg
The day in figurespeaks, averages, totals
Peak demand42.3GW · 17:25
Low 27.1 · 05:05Avg 35.80–60 GW
Made in Great Britain85%of demand
Generation 30.5Transfers 5.3 GW
Net imports134GWh
In
164 Out
30
Zero-carbon share73%of generation
Nuclear 11%Hydro 2%Wind 59%Solar 0%

Transfers · Thu 18 Dec

Interconnectors and storage

On Thursday 18 December 2025, Great Britain imported 164 GWh and exported 30 GWh through its interconnectors. The most came from France (80 GWh), and the most exports went to Ireland (21 GWh).

All interconnectors

Thu 18 Dec
Imported
164GWh
Exported
30GWh
Net in
134GWh
Average net flow
5.59GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.48GWImporting

In 15.4 GWhOut 3.9 GWh

Denmark

Viking Link

Average1.18GWImporting

In 28.3 GWhOut 0.0 GWh

France

IFA · IFA2 · ElecLink

Average3.32GWImporting

In 79.6 GWhOut 0.0 GWh

Ireland

Moyle · East–West · Greenlink

Average0.86GWExporting

In 0.0 GWhOut 20.7 GWh

Netherlands

BritNed

Average0.38GWImporting

In 14.2 GWhOut 5.1 GWh

Norway

North Sea Link

Average1.11GWImporting

In 26.6 GWhOut 0.0 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.26GWPumping

Generated 6.0 GWhPumped 12.1 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.