Electricity Live

Great Britain’s electricity on Sunday 28 September 2025

On Sunday 28 September, demand averaged 26.6 GW. Renewables supplied 20%.

26.6GW AVERAGEWind2.92 GW10%Hydro0.41 GW1%Biomass3.02 GW11%Solar2.22 GW8%Gas11.12 GW39%Imports6.24 GW22%Nuclear2.51 GW9%26.6GW AVERAGE10%11%8%39%22%9%
Price
£91.19/MWh
Day average £91.19
Demand26.6GW
Generation 22.2Transfers 4.4
Fossil fuels39%
Renewables20%
Other41%
Carbon intensityModerate
190g/kWh
0Day average 190300
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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 28 September 2025, gas supplied 39% of Great Britain’s electricity and biomass 11%. Demand peaked at 32.1 GW at 12:30. Carbon intensity averaged 190 g/kWh and the price £91.19/MWh. Wind generation peaked at 9.2 GW at 00:00. Solar generation peaked at 8.4 GW at 13:30. Carbon intensity was lowest at 00:00 (139 g/kWh) and highest at 20:30 (260 g/kWh). The wholesale price ranged from £76.79/MWh at 15:30 to £123.92/MWh at 17:30. Gas made 50% 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 2.227.8%Wind 2.9210.3%Gas 11.1239.1%Hydro 0.411.4%Biomass 3.0210.6%Nuclear 2.518.8%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 26.6avgGeneration 22.2avgTransfers 4.4avg
The day in figurespeaks, averages, totals
Peak demand32.1GW · 12:30
Low 19.8 · 05:45Avg 26.60–40 GW
Made in Great Britain83%of demand
Generation 22.2Transfers 4.4 GW
Net imports103GWh
In
146 Out
43
Zero-carbon share36%of generation
Nuclear 11%Hydro 2%Wind 13%Solar 10%

Transfers · Sun 28 Sept

Interconnectors and storage

On Sunday 28 September 2025, Great Britain imported 146 GWh and exported 43 GWh through its interconnectors. The most came from France (68 GWh), and the most exports went to Ireland (28 GWh).

All interconnectors

Sun 28 Sept
Imported
146GWh
Exported
43GWh
Net in
103GWh
Average net flow
4.30GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.87GWImporting

In 20.9 GWhOut 0.0 GWh

Denmark

Viking Link

Average0.15GWImporting

In 11.2 GWhOut 7.6 GWh

France

IFA · IFA2 · ElecLink

Average2.83GWImporting

In 67.9 GWhOut 0.0 GWh

Ireland

Moyle · East–West · Greenlink

Average1.18GWExporting

In 0.0 GWhOut 28.3 GWh

Netherlands

BritNed

Average0.23GWImporting

In 12.7 GWhOut 7.1 GWh

Norway

North Sea Link

Average1.40GWImporting

In 33.5 GWhOut 0.0 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.08GWGenerating

Generated 3.6 GWhPumped 1.6 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.