Electricity Live

Great Britain’s electricity on Wednesday 10 September 2025

On Wednesday 10 September, demand averaged 29.2 GW. Renewables supplied 58%.

29.2GW AVERAGEWind16.66 GW52%Hydro0.26 GW1%Biomass2.25 GW7%Solar1.66 GW5%Gas3.59 GW11%Imports4.52 GW14%Nuclear3.27 GW10%29.2GW AVERAGE52%11%14%10%
Price
£59.65/MWh
Day average £59.65
Demand29.2GW
Generation 27.7Transfers 1.5
Fossil fuels11%
Renewables58%
Other31%
Carbon intensityLow
63g/kWh
0Day average 63300
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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 10 September 2025, wind supplied 52% of Great Britain’s electricity and gas 11%. Demand peaked at 35.5 GW at 11:40. Carbon intensity averaged 63 g/kWh and the price £59.65/MWh. Wind generation peaked at 19.2 GW at 13:20. Solar generation peaked at 5.9 GW at 11:30. Carbon intensity was lowest at 12:00 (43 g/kWh) and highest at 07:00 (90 g/kWh). The wholesale price ranged from −£7.25/MWh at 23:00 to £104.79/MWh at 07:30. The price was below zero for 1 hours. Wind made 60% 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 1.665.2%Wind 16.6651.7%Gas 3.5911.1%Hydro 0.260.8%Biomass 2.257.0%Nuclear 3.2710.2%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 29.2avgGeneration 27.7avgTransfers 1.5avg
The day in figurespeaks, averages, totals
Peak demand35.5GW · 11:40
Low 21.7 · 04:05Avg 29.20–40 GW
Made in Great Britain95%of demand
Generation 27.7Transfers 1.5 GW
Net imports39GWh
In
107 Out
68
Zero-carbon share79%of generation
Nuclear 12%Hydro 1%Wind 60%Solar 6%

Transfers · Wed 10 Sept

Interconnectors and storage

On Wednesday 10 September 2025, Great Britain imported 107 GWh and exported 68 GWh through its interconnectors. The most came from France (71 GWh), and the most exports went to Denmark (26 GWh).

All interconnectors

Wed 10 Sept
Imported
107GWh
Exported
68GWh
Net in
39GWh
Average net flow
1.62GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.06GWImporting

In 6.6 GWhOut 5.2 GWh

Denmark

Viking Link

Average1.07GWExporting

In 0.0 GWhOut 25.6 GWh

France

IFA · IFA2 · ElecLink

Average2.96GWImporting

In 71.1 GWhOut 0.0 GWh

Ireland

Moyle · East–West · Greenlink

Average0.68GWExporting

In 1.5 GWhOut 17.8 GWh

Netherlands

BritNed

Average0.79GWExporting

In 0.2 GWhOut 19.2 GWh

Norway

North Sea Link

Average1.13GWImporting

In 27.2 GWhOut 0.0 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.10GWPumping

Generated 1.9 GWhPumped 4.2 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.