Electricity Live

Great Britain’s electricity on Wednesday 24 September 2025

On Wednesday 24 September, demand averaged 29.8 GW. Renewables supplied 31%.

29.8GW AVERAGEWind6.68 GW21%Hydro0.42 GW1%Biomass3.25 GW10%Solar2.57 GW8%Gas9.86 GW32%Imports5.85 GW19%Nuclear2.50 GW8%29.8GW AVERAGE21%10%8%32%19%8%
Price
£85.42/MWh
Day average £85.42
Demand29.8GW
Generation 25.3Transfers 4.6
Fossil fuels32%
Renewables31%
Other37%
Carbon intensityModerate
161g/kWh
0Day average 161300
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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 24 September 2025, gas supplied 32% of Great Britain’s electricity and wind 21%. Demand peaked at 36.1 GW at 10:30. Carbon intensity averaged 161 g/kWh and the price £85.42/MWh. Wind generation peaked at 8.4 GW at 20:05. Solar generation peaked at 9.1 GW at 12:00. Carbon intensity was lowest at 11:00 (121 g/kWh) and highest at 07:00 (195 g/kWh). The wholesale price ranged from £69.71/MWh at 12:00 to £112.61/MWh at 08:30. Gas made 39% 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 2.578.2%Wind 6.6821.5%Gas 9.8631.7%Hydro 0.421.3%Biomass 3.2510.4%Nuclear 2.508.0%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 29.8avgGeneration 25.3avgTransfers 4.6avg
The day in figurespeaks, averages, totals
Peak demand36.1GW · 10:30
Low 22.0 · 04:25Avg 29.80–40 GW
Made in Great Britain85%of demand
Generation 25.3Transfers 4.6 GW
Net imports107GWh
In
138 Out
30
Zero-carbon share48%of generation
Nuclear 10%Hydro 2%Wind 26%Solar 10%

Transfers · Wed 24 Sept

Interconnectors and storage

On Wednesday 24 September 2025, Great Britain imported 138 GWh and exported 30 GWh through its interconnectors. The most came from France (72 GWh), and the most exports went to Ireland (27 GWh).

All interconnectors

Wed 24 Sept
Imported
138GWh
Exported
30GWh
Net in
107GWh
Average net flow
4.48GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.00GWIdle

In 0.0 GWhOut 0.0 GWh

Denmark

Viking Link

Average0.45GWImporting

In 13.6 GWhOut 2.8 GWh

France

IFA · IFA2 · ElecLink

Average2.99GWImporting

In 71.7 GWhOut 0.0 GWh

Ireland

Moyle · East–West · Greenlink

Average1.12GWExporting

In 0.0 GWhOut 26.9 GWh

Netherlands

BritNed

Average0.76GWImporting

In 18.8 GWhOut 0.5 GWh

Norway

North Sea Link

Average1.40GWImporting

In 33.5 GWhOut 0.0 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.09GWGenerating

Generated 2.8 GWhPumped 0.7 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.