Electricity Live

Great Britain’s electricity on Thursday 4 September 2025

On Thursday 4 September, demand averaged 28.4 GW. Renewables supplied 38%.

28.4GW AVERAGEWind8.63 GW28%Hydro0.32 GW1%Biomass2.49 GW8%Solar2.47 GW8%Gas7.38 GW24%Imports5.08 GW17%Nuclear3.98 GW13%28.4GW AVERAGE28%8%8%24%17%13%
Price
£79.64/MWh
Day average £79.64
Demand28.4GW
Generation 25.3Transfers 3.1
Fossil fuels24%
Renewables38%
Other38%
Carbon intensityModerate
125g/kWh
0Day average 125300
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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 4 September 2025, wind supplied 28% of Great Britain’s electricity and gas 24%. Demand peaked at 34.6 GW at 13:20. Carbon intensity averaged 125 g/kWh and the price £79.64/MWh. Wind generation peaked at 13.6 GW at 00:00. Solar generation peaked at 8.1 GW at 13:00. Carbon intensity was lowest at 00:30 (70 g/kWh) and highest at 19:00 (173 g/kWh). The wholesale price ranged from £61.16/MWh at 01:00 to £103.16/MWh at 09:00. Wind made 34% 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 2.478.1%Wind 8.6328.4%Gas 7.3824.3%Hydro 0.321.0%Biomass 2.498.2%Nuclear 3.9813.1%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 28.4avgGeneration 25.3avgTransfers 3.1avg
The day in figurespeaks, averages, totals
Peak demand34.6GW · 13:20
Low 20.4 · 05:05Avg 28.40–40 GW
Made in Great Britain89%of demand
Generation 25.3Transfers 3.1 GW
Net imports77GWh
In
120 Out
43
Zero-carbon share61%of generation
Nuclear 16%Hydro 1%Wind 34%Solar 10%

Transfers · Thu 4 Sept

Interconnectors and storage

On Thursday 4 September 2025, Great Britain imported 120 GWh and exported 43 GWh through its interconnectors. The most came from France (80 GWh), and the most exports went to Ireland (30 GWh).

All interconnectors

Thu 4 Sept
Imported
120GWh
Exported
43GWh
Net in
77GWh
Average net flow
3.22GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.38GWImporting

In 9.6 GWhOut 0.4 GWh

Denmark

Viking Link

Average0.41GWImporting

In 18.7 GWhOut 8.9 GWh

France

IFA · IFA2 · ElecLink

Average3.32GWImporting

In 79.7 GWhOut 0.0 GWh

Ireland

Moyle · East–West · Greenlink

Average1.24GWExporting

In 0.0 GWhOut 29.7 GWh

Netherlands

BritNed

Average0.34GWImporting

In 12.2 GWhOut 4.0 GWh

Norway

North Sea Link

Average0.00GWIdle

In 0.0 GWhOut 0.0 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.10GWPumping

Generated 1.6 GWhPumped 4.0 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.