Electricity Live

Daily record

Great Britain’s electricity on Saturday 12 September 2026

On Saturday 12 September 2026, wind supplied 48% of Great Britain’s electricity and gas 14%. Demand peaked at 35.0 GW at 13:35. Carbon intensity averaged 81 g/kWh and the price £99.34/MWh.

Key moments

  • Wind generation peaked at 21.7 GW at 13:40.
  • Solar generation peaked at 8.3 GW at 13:30.
  • Carbon intensity was lowest at 14:00 (27 g/kWh) and highest at 03:30 (144 g/kWh).
  • The wholesale price ranged from −£16.65/MWh at 14:30 to £187.69/MWh at 01:00. The price was below zero for 4 hours.
  • Wind made 52% of the electricity generated in Great Britain, compared with 36% across 2026 so far.

Charts

Generation, demand, price and carbon

Generation by sourceGW · daily average below
Solar 2.087.0%Wind 14.0847.5%Gas 4.2314.3%Hydro 0.391.3%Biomass 2.368.0%Nuclear 3.7212.5%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 26.4avgGeneration 26.8avgTransfers −0.4avg
The day in figurespeaks, averages, totals
Peak demand35.0GW · 13:35
Low 19.4 · 04:10Avg 26.40–40 GW
Made in Great Britain102%of demand
Generation 26.8Transfers −0.4 GW
Net imports0GWh
In
66 Out
65
Zero-carbon share75%of generation
Nuclear 14%Hydro 1%Wind 52%Solar 8%

Transfers · Sat 12 Sept

Interconnectors and storage

On Saturday 12 September 2026, Great Britain imported 66 GWh and exported 65 GWh through its interconnectors. The most came from France (40 GWh), and the most exports went to Ireland (22 GWh).

All interconnectors

Sat 12 Sept
Imported
66GWh
Exported
65GWh
Net in
0GWh
Average net flow
0.02GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.29GWExporting

In 2.0 GWhOut 8.9 GWh

Denmark

Viking Link

Average0.36GWExporting

In 8.8 GWhOut 17.4 GWh

France

IFA · IFA2 · ElecLink

Average1.37GWImporting

In 39.9 GWhOut 7.0 GWh

Ireland

Moyle · East–West · Greenlink

Average0.87GWExporting

In 1.1 GWhOut 22.0 GWh

Netherlands

BritNed

Average0.00GWIdle

In 0.0 GWhOut 0.0 GWh

Norway

North Sea Link

Average0.17GWImporting

In 13.9 GWhOut 9.8 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.43GWPumping

Generated 0.9 GWhPumped 11.3 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.