Electricity Live

Great Britain’s electricity on Tuesday 21 January 2025

On Tuesday 21 January, demand averaged 36.5 GW. Renewables supplied 13%.

36.5GW AVERAGEWind3.91 GW10%Hydro0.61 GW2%Biomass3.15 GW8%Solar0.53 GW1%Gas23.65 GW61%Imports3.24 GW8%Nuclear3.70 GW10%36.5GW AVERAGE10%8%61%8%10%
Price
£141.42/MWh
Day average £141.42
Demand36.5GW
Generation 35.5Transfers 0.9
Fossil fuels61%
Renewables13%
Other26%
Carbon intensityVery high
256g/kWh
0Day average 256300
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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 21 January 2025, gas supplied 61% of Great Britain’s electricity and wind 10%. Demand peaked at 43.8 GW at 11:30. Carbon intensity averaged 256 g/kWh and the price £141.42/MWh. Wind generation peaked at 5.4 GW at 07:55. Solar generation peaked at 2.9 GW at 11:30. Carbon intensity was lowest at 11:00 (237 g/kWh) and highest at 22:00 (277 g/kWh). The wholesale price ranged from £99.31/MWh at 03:00 to £221.62/MWh at 17:00. Gas made 67% 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 0.531.4%Wind 3.9110.1%Gas 23.6561.0%Hydro 0.611.6%Biomass 3.158.1%Nuclear 3.709.5%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 36.5avgGeneration 35.5avgTransfers 0.9avg
The day in figurespeaks, averages, totals
Peak demand43.8GW · 11:30
Low 26.9 · 04:25Avg 36.50–60 GW
Made in Great Britain97%of demand
Generation 35.5Transfers 0.9 GW
Net imports28GWh
In
69 Out
41
Zero-carbon share25%of generation
Nuclear 10%Hydro 2%Wind 11%Solar 1%

Transfers · Tue 21 Jan

Interconnectors and storage

On Tuesday 21 January 2025, Great Britain imported 69 GWh and exported 41 GWh through its interconnectors. The most came from Norway (31 GWh), and the most exports went to Ireland (18 GWh).

All interconnectors

Tue 21 Jan
Imported
69GWh
Exported
41GWh
Net in
28GWh
Average net flow
1.16GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.05GWExporting

In 6.6 GWhOut 7.8 GWh

Denmark

Viking Link

Average0.20GWImporting

In 7.1 GWhOut 2.4 GWh

France

IFA · IFA2 · ElecLink

Average0.47GWImporting

In 23.4 GWhOut 12.1 GWh

Ireland

Moyle · East–West · Greenlink

Average0.77GWExporting

In 0.0 GWhOut 18.5 GWh

Netherlands

BritNed

Average0.00GWIdle

In 0.0 GWhOut 0.0 GWh

Norway

North Sea Link

Average1.31GWImporting

In 31.5 GWhOut 0.0 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.24GWPumping

Generated 9.1 GWhPumped 15.0 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.