Electricity Live

Great Britain’s electricity on Thursday 11 September 2025

On Thursday 11 September, demand averaged 29.1 GW. Renewables supplied 65%.

29.1GW AVERAGEWind17.87 GW56%Hydro0.30 GW1%Biomass0.92 GW3%Solar2.78 GW9%Gas3.37 GW10%Imports3.66 GW11%Nuclear3.29 GW10%29.1GW AVERAGE56%9%10%11%10%
Price
£17.53/MWh
Day average £17.53
Demand29.1GW
Generation 28.5Transfers 0.5
Fossil fuels10%
Renewables65%
Other24%
Carbon intensityLow
56g/kWh
0Day average 56300
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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 11 September 2025, wind supplied 56% of Great Britain’s electricity and gas 10%. Demand peaked at 35.4 GW at 12:10. Carbon intensity averaged 56 g/kWh and the price £17.53/MWh. Wind generation peaked at 19.4 GW at 23:35. Solar generation peaked at 9.3 GW at 12:30. Carbon intensity was lowest at 13:30 (37 g/kWh) and highest at 18:30 (91 g/kWh). The wholesale price ranged from −£22.99/MWh at 15:00 to £95.18/MWh at 19:30. The price was below zero for 10 hours. Wind made 63% 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 2.788.6%Wind 17.8755.5%Gas 3.3710.5%Hydro 0.300.9%Biomass 0.922.9%Nuclear 3.2910.2%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 29.1avgGeneration 28.5avgTransfers 0.5avg
The day in figurespeaks, averages, totals
Peak demand35.4GW · 12:10
Low 21.4 · 04:15Avg 29.10–40 GW
Made in Great Britain98%of demand
Generation 28.5Transfers 0.5 GW
Net imports18GWh
In
84 Out
66
Zero-carbon share85%of generation
Nuclear 12%Hydro 1%Wind 63%Solar 10%

Transfers · Thu 11 Sept

Interconnectors and storage

On Thursday 11 September 2025, Great Britain imported 84 GWh and exported 66 GWh through its interconnectors. The most came from France (59 GWh), and the most exports went to Ireland (23 GWh).

All interconnectors

Thu 11 Sept
Imported
84GWh
Exported
66GWh
Net in
18GWh
Average net flow
0.74GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.15GWImporting

In 9.4 GWhOut 5.9 GWh

Denmark

Viking Link

Average0.27GWExporting

In 4.0 GWhOut 10.5 GWh

France

IFA · IFA2 · ElecLink

Average2.45GWImporting

In 58.7 GWhOut 0.0 GWh

Ireland

Moyle · East–West · Greenlink

Average0.97GWExporting

In 0.0 GWhOut 23.2 GWh

Netherlands

BritNed

Average0.76GWExporting

In 0.7 GWhOut 19.1 GWh

Norway

North Sea Link

Average0.15GWImporting

In 11.3 GWhOut 7.7 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.21GWPumping

Generated 3.7 GWhPumped 8.6 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.