Electricity Live

Great Britain’s electricity on Tuesday 21 October 2025

On Tuesday 21 October, demand averaged 30.8 GW. Renewables supplied 40%.

30.8GW AVERAGEWind11.41 GW36%Hydro0.28 GW1%Biomass2.66 GW8%Solar1.07 GW3%Gas5.36 GW17%Imports6.86 GW22%Nuclear4.01 GW13%30.8GW AVERAGE36%8%17%22%13%
Price
£79.83/MWh
Day average £79.83
Demand30.8GW
Generation 24.8Transfers 6.0
Fossil fuels17%
Renewables40%
Other43%
Carbon intensityModerate
100g/kWh
0Day average 100300
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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 October 2025, wind supplied 36% of Great Britain’s electricity and gas 17%. Demand peaked at 36.8 GW at 19:55. Carbon intensity averaged 100 g/kWh and the price £79.83/MWh. Wind generation peaked at 17.8 GW at 20:45. Solar generation peaked at 4.6 GW at 13:00. Carbon intensity was lowest at 23:30 (56 g/kWh) and highest at 07:30 (141 g/kWh). The wholesale price ranged from £51.14/MWh at 23:30 to £103.30/MWh at 18:30. 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 1.073.4%Wind 11.4136.1%Gas 5.3616.9%Hydro 0.280.9%Biomass 2.668.4%Nuclear 4.0112.7%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 30.8avgGeneration 24.8avgTransfers 6.0avg
The day in figurespeaks, averages, totals
Peak demand36.8GW · 19:55
Low 23.2 · 00:55Avg 30.80–40 GW
Made in Great Britain80%of demand
Generation 24.8Transfers 6.0 GW
Net imports145GWh
In
161 Out
16
Zero-carbon share68%of generation
Nuclear 16%Hydro 1%Wind 46%Solar 4%

Transfers · Tue 21 Oct

Interconnectors and storage

On Tuesday 21 October 2025, Great Britain imported 161 GWh and exported 16 GWh through its interconnectors. The most came from France (72 GWh), and the most exports went to Ireland (14 GWh).

All interconnectors

Tue 21 Oct
Imported
161GWh
Exported
16GWh
Net in
145GWh
Average net flow
6.02GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.50GWImporting

In 13.8 GWhOut 1.8 GWh

Denmark

Viking Link

Average1.12GWImporting

In 26.8 GWhOut 0.0 GWh

France

IFA · IFA2 · ElecLink

Average2.98GWImporting

In 71.5 GWhOut 0.0 GWh

Ireland

Moyle · East–West · Greenlink

Average0.55GWExporting

In 0.4 GWhOut 13.5 GWh

Netherlands

BritNed

Average0.60GWImporting

In 15.4 GWhOut 1.1 GWh

Norway

North Sea Link

Average1.38GWImporting

In 33.1 GWhOut 0.0 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.00GWIdle

Generated 3.7 GWhPumped 3.7 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.