Electricity Live

Great Britain’s electricity on Sunday 14 September 2025

On Sunday 14 September, demand averaged 26.6 GW. Renewables supplied 46%.

26.6GW AVERAGEWind11.35 GW41%Hydro0.48 GW2%Biomass1.71 GW6%Solar0.98 GW4%Gas4.37 GW16%Imports5.76 GW21%Nuclear3.27 GW12%26.6GW AVERAGE41%16%21%12%
Price
£76.97/MWh
Day average £76.97
Demand26.6GW
Generation 22.1Transfers 4.5
Fossil fuels16%
Renewables46%
Other38%
Carbon intensityLow
93g/kWh
0Day average 93300
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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 Sunday 14 September 2025, wind supplied 41% of Great Britain’s electricity and gas 16%. Demand peaked at 33.3 GW at 17:35. Carbon intensity averaged 93 g/kWh and the price £76.97/MWh. Wind generation peaked at 21.2 GW at 18:40. Solar generation peaked at 3.8 GW at 10:30. Carbon intensity was lowest at 22:30 (54 g/kWh) and highest at 06:30 (135 g/kWh). The wholesale price ranged from £8.53/MWh at 23:30 to £94.38/MWh at 16:30. Wind made 51% 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 0.983.5%Wind 11.3540.7%Gas 4.3715.7%Hydro 0.481.7%Biomass 1.716.1%Nuclear 3.2711.7%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 26.6avgGeneration 22.1avgTransfers 4.5avg
The day in figurespeaks, averages, totals
Peak demand33.3GW · 17:35
Low 18.9 · 04:30Avg 26.60–40 GW
Made in Great Britain83%of demand
Generation 22.1Transfers 4.5 GW
Net imports100GWh
In
131 Out
30
Zero-carbon share73%of generation
Nuclear 15%Hydro 2%Wind 51%Solar 4%

Transfers · Sun 14 Sept

Interconnectors and storage

On Sunday 14 September 2025, Great Britain imported 131 GWh and exported 30 GWh through its interconnectors. The most came from France (71 GWh), and the most exports went to Denmark (9 GWh).

All interconnectors

Sun 14 Sept
Imported
131GWh
Exported
30GWh
Net in
100GWh
Average net flow
4.18GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.46GWImporting

In 12.1 GWhOut 1.0 GWh

Denmark

Viking Link

Average0.04GWImporting

In 9.7 GWhOut 8.7 GWh

France

IFA · IFA2 · ElecLink

Average2.96GWImporting

In 70.9 GWhOut 0.0 GWh

Ireland

Moyle · East–West · Greenlink

Average0.17GWExporting

In 4.1 GWhOut 8.2 GWh

Netherlands

BritNed

Average0.16GWImporting

In 11.3 GWhOut 7.6 GWh

Norway

North Sea Link

Average0.74GWImporting

In 22.6 GWhOut 4.8 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.28GWGenerating

Generated 7.4 GWhPumped 0.8 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.