Electricity Live

Great Britain’s electricity on Monday 22 September 2025

On Monday 22 September, demand averaged 29.6 GW. Renewables supplied 41%.

29.6GW AVERAGEWind8.97 GW29%Hydro0.29 GW1%Biomass2.81 GW9%Solar3.52 GW11%Gas7.38 GW24%Imports5.90 GW19%Nuclear2.51 GW8%29.6GW AVERAGE29%9%11%24%19%8%
Price
£77.66/MWh
Day average £77.66
Demand29.6GW
Generation 25.5Transfers 4.2
Fossil fuels24%
Renewables41%
Other36%
Carbon intensityLow
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 Monday 22 September 2025, wind supplied 29% of Great Britain’s electricity and gas 24%. Demand peaked at 35.9 GW at 12:05. Carbon intensity averaged 122 g/kWh and the price £77.66/MWh. Wind generation peaked at 11.1 GW at 00:00. Solar generation peaked at 12.2 GW at 12:30. Carbon intensity was lowest at 13:30 (73 g/kWh) and highest at 19:00 (193 g/kWh). The wholesale price ranged from £56.77/MWh at 12:30 to £104.57/MWh at 18:30. 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 3.5211.2%Wind 8.9728.6%Gas 7.3823.5%Hydro 0.290.9%Biomass 2.819.0%Nuclear 2.518.0%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 29.6avgGeneration 25.5avgTransfers 4.2avg
The day in figurespeaks, averages, totals
Peak demand35.9GW · 12:05
Low 22.1 · 04:45Avg 29.60–40 GW
Made in Great Britain86%of demand
Generation 25.5Transfers 4.2 GW
Net imports98GWh
In
138 Out
40
Zero-carbon share60%of generation
Nuclear 10%Hydro 1%Wind 35%Solar 14%

Transfers · Mon 22 Sept

Interconnectors and storage

On Monday 22 September 2025, Great Britain imported 138 GWh and exported 40 GWh through its interconnectors. The most came from France (72 GWh), and the most exports went to Ireland (32 GWh).

All interconnectors

Mon 22 Sept
Imported
138GWh
Exported
40GWh
Net in
98GWh
Average net flow
4.10GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.20GWImporting

In 4.8 GWhOut 0.0 GWh

Denmark

Viking Link

Average0.73GWImporting

In 17.9 GWhOut 0.5 GWh

France

IFA · IFA2 · ElecLink

Average2.98GWImporting

In 71.6 GWhOut 0.0 GWh

Ireland

Moyle · East–West · Greenlink

Average1.34GWExporting

In 0.0 GWhOut 32.1 GWh

Netherlands

BritNed

Average0.13GWImporting

In 10.4 GWhOut 7.4 GWh

Norway

North Sea Link

Average1.40GWImporting

In 33.5 GWhOut 0.0 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.06GWGenerating

Generated 3.4 GWhPumped 1.9 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.