Electricity Live

Great Britain’s electricity on Saturday 6 September 2025

On Saturday 6 September, demand averaged 26.0 GW. Renewables supplied 50%.

26.0GW AVERAGEWind10.66 GW38%Hydro0.21 GW1%Biomass1.67 GW6%Solar2.92 GW11%Gas3.53 GW13%Imports5.48 GW20%Nuclear3.28 GW12%26.0GW AVERAGE38%11%13%20%12%
Price
£21.76/MWh
Day average £21.76
Demand26.0GW
Generation 22.3Transfers 3.7
Fossil fuels13%
Renewables50%
Other38%
Carbon intensityLow
79g/kWh
0Day average 79300
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Recorded half-hourRecorded half-hourRecorded half-hourRecorded half-hourRecorded half-hourRecorded half-hourRecorded half-hourRecorded half-hourRecorded half-hourRecorded half-hour

Records set on this day

All records

Key moments

On Saturday 6 September 2025, wind supplied 38% of Great Britain’s electricity and gas 13%. Demand peaked at 31.2 GW at 10:30. Carbon intensity averaged 79 g/kWh and the price £21.76/MWh. Wind generation peaked at 20.4 GW at 22:55. Solar generation peaked at 10.3 GW at 13:00. Carbon intensity was lowest at 16:00 (49 g/kWh) and highest at 00:00 (145 g/kWh). The wholesale price ranged from −£102.92/MWh at 13:30 to £85.71/MWh at 03:00. The price was below zero for 10.5 hours. Wind made 48% 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 2.9210.5%Wind 10.6638.4%Gas 3.5312.7%Hydro 0.210.8%Biomass 1.676.0%Nuclear 3.2811.8%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 26.0avgGeneration 22.3avgTransfers 3.7avg
The day in figurespeaks, averages, totals
Peak demand31.2GW · 10:30
Low 19.6 · 05:20Avg 26.00–40 GW
Made in Great Britain86%of demand
Generation 22.3Transfers 3.7 GW
Net imports94GWh
In
131 Out
37
Zero-carbon share77%of generation
Nuclear 15%Hydro 1%Wind 48%Solar 13%

Transfers · Sat 6 Sept

Interconnectors and storage

On Saturday 6 September 2025, Great Britain imported 131 GWh and exported 37 GWh through its interconnectors. The most came from France (83 GWh), and the most exports went to Denmark (14 GWh).

All interconnectors

Sat 6 Sept
Imported
131GWh
Exported
37GWh
Net in
94GWh
Average net flow
3.92GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.41GWImporting

In 13.1 GWhOut 3.2 GWh

Denmark

Viking Link

Average0.34GWExporting

In 6.2 GWhOut 14.2 GWh

France

IFA · IFA2 · ElecLink

Average3.46GWImporting

In 82.9 GWhOut 0.0 GWh

Ireland

Moyle · East–West · Greenlink

Average0.09GWExporting

In 3.6 GWhOut 5.8 GWh

Netherlands

BritNed

Average0.21GWExporting

In 5.7 GWhOut 10.8 GWh

Norway

North Sea Link

Average0.68GWImporting

In 19.5 GWhOut 3.0 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.19GWPumping

Generated 0.4 GWhPumped 5.0 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.