Electricity Live

Great Britain’s electricity on Tuesday 16 December 2025

On Tuesday 16 December, demand averaged 34.9 GW. Renewables supplied 22%.

34.9GW AVERAGEWind7.19 GW19%Hydro0.80 GW2%Biomass2.93 GW8%Solar0.44 GW1%Gas17.43 GW46%Imports5.10 GW14%Nuclear3.61 GW10%34.9GW AVERAGE19%8%46%14%10%
Price
£87.71/MWh
Day average £87.71
Demand34.9GW
Generation 32.4Transfers 2.5
Fossil fuels46%
Renewables22%
Other31%
Carbon intensityHigh
197g/kWh
0Day average 197300
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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 Tuesday 16 December 2025, gas supplied 46% of Great Britain’s electricity and wind 19%. Demand peaked at 40.4 GW at 12:25. Carbon intensity averaged 197 g/kWh and the price £87.71/MWh. Wind generation peaked at 9.5 GW at 00:00. Solar generation peaked at 2.5 GW at 11:30. Carbon intensity was lowest at 00:00 (127 g/kWh) and highest at 07:00 (241 g/kWh). The wholesale price ranged from £72.81/MWh at 23:00 to £109.74/MWh at 17:30. Gas made 54% 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 0.441.2%Wind 7.1919.2%Gas 17.4346.5%Hydro 0.802.1%Biomass 2.937.8%Nuclear 3.619.6%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 34.9avgGeneration 32.4avgTransfers 2.5avg
The day in figurespeaks, averages, totals
Peak demand40.4GW · 12:25
Low 25.1 · 05:05Avg 34.90–60 GW
Made in Great Britain93%of demand
Generation 32.4Transfers 2.5 GW
Net imports54GWh
In
115 Out
61
Zero-carbon share37%of generation
Nuclear 11%Hydro 2%Wind 22%Solar 1%

Transfers · Tue 16 Dec

Interconnectors and storage

On Tuesday 16 December 2025, Great Britain imported 115 GWh and exported 61 GWh through its interconnectors. The most came from France (74 GWh), and the most exports went to Ireland (29 GWh).

All interconnectors

Tue 16 Dec
Imported
115GWh
Exported
61GWh
Net in
54GWh
Average net flow
2.25GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.08GWExporting

In 3.6 GWhOut 5.6 GWh

Denmark

Viking Link

Average0.68GWExporting

In 1.1 GWhOut 17.4 GWh

France

IFA · IFA2 · ElecLink

Average3.07GWImporting

In 73.6 GWhOut 0.0 GWh

Ireland

Moyle · East–West · Greenlink

Average1.18GWExporting

In 0.8 GWhOut 29.0 GWh

Netherlands

BritNed

Average0.28GWExporting

In 1.9 GWhOut 8.6 GWh

Norway

North Sea Link

Average1.40GWImporting

In 33.5 GWhOut 0.0 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.21GWGenerating

Generated 7.7 GWhPumped 2.8 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.