Electricity Live

Great Britain’s electricity on Thursday 25 September 2025

On Thursday 25 September, demand averaged 29.6 GW. Renewables supplied 40%.

29.6GW AVERAGEWind8.62 GW28%Hydro0.36 GW1%Biomass3.12 GW10%Solar3.33 GW11%Gas6.82 GW22%Imports5.79 GW19%Nuclear2.51 GW8%29.6GW AVERAGE28%10%11%22%19%8%
Price
£90.40/MWh
Day average £90.40
Demand29.6GW
Generation 24.8Transfers 4.9
Fossil fuels22%
Renewables40%
Other37%
Carbon intensityModerate
122g/kWh
0Day average 122300
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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 25 September 2025, wind supplied 28% of Great Britain’s electricity and gas 22%. Demand peaked at 35.6 GW at 09:30. Carbon intensity averaged 122 g/kWh and the price £90.40/MWh. Wind generation peaked at 10.9 GW at 17:25. Solar generation peaked at 11.4 GW at 13:00. Carbon intensity was lowest at 14:30 (71 g/kWh) and highest at 19:00 (174 g/kWh). The wholesale price ranged from £70.61/MWh at 16:30 to £116.02/MWh at 19:30. Wind made 35% 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 3.3310.9%Wind 8.6228.2%Gas 6.8222.3%Hydro 0.361.2%Biomass 3.1210.2%Nuclear 2.518.2%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 29.6avgGeneration 24.8avgTransfers 4.9avg
The day in figurespeaks, averages, totals
Peak demand35.6GW · 09:30
Low 22.7 · 03:20Avg 29.60–40 GW
Made in Great Britain84%of demand
Generation 24.8Transfers 4.9 GW
Net imports118GWh
In
138 Out
21
Zero-carbon share60%of generation
Nuclear 10%Hydro 1%Wind 35%Solar 13%

Transfers · Thu 25 Sept

Interconnectors and storage

On Thursday 25 September 2025, Great Britain imported 138 GWh and exported 21 GWh through its interconnectors. The most came from France (70 GWh), and the most exports went to Ireland (17 GWh).

All interconnectors

Thu 25 Sept
Imported
138GWh
Exported
21GWh
Net in
118GWh
Average net flow
4.91GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.00GWIdle

In 0.0 GWhOut 0.0 GWh

Denmark

Viking Link

Average0.84GWImporting

In 20.0 GWhOut 0.0 GWh

France

IFA · IFA2 · ElecLink

Average2.92GWImporting

In 70.2 GWhOut 0.0 GWh

Ireland

Moyle · East–West · Greenlink

Average0.71GWExporting

In 0.0 GWhOut 16.9 GWh

Netherlands

BritNed

Average0.46GWImporting

In 14.7 GWhOut 3.6 GWh

Norway

North Sea Link

Average1.40GWImporting

In 33.5 GWhOut 0.0 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.06GWPumping

Generated 0.5 GWhPumped 1.8 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.