Electricity Live

Daily record

Great Britain’s electricity on Tuesday 15 September 2026

On Tuesday 15 September 2026, wind supplied 46% of Great Britain’s electricity and gas 15%. Demand peaked at 36.7 GW at 13:05. Carbon intensity averaged 78 g/kWh and the price £148.80/MWh.

Key moments

  • Wind generation peaked at 17.1 GW at 05:05.
  • Solar generation peaked at 10.9 GW at 13:00.
  • Carbon intensity was lowest at 12:00 (34 g/kWh) and highest at 19:00 (156 g/kWh).
  • The wholesale price ranged from £46.33/MWh at 11:00 to £212.39/MWh at 18:30.
  • Wind made 51% 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 2.979.4%Wind 14.5545.8%Gas 4.6614.7%Hydro 0.421.3%Biomass 2.678.4%Nuclear 3.3210.5%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 29.6avgGeneration 28.6avgTransfers 1.0avg
The day in figurespeaks, averages, totals
Peak demand36.7GW · 13:05
Low 22.8 · 04:05Avg 29.60–40 GW
Made in Great Britain97%of demand
Generation 28.6Transfers 1.0 GW
Net imports31GWh
In
74 Out
42
Zero-carbon share74%of generation
Nuclear 12%Hydro 1%Wind 51%Solar 10%

Transfers · Tue 15 Sept

Interconnectors and storage

On Tuesday 15 September 2026, Great Britain imported 74 GWh and exported 42 GWh through its interconnectors. The most came from Norway (29 GWh), and the most exports went to Ireland (20 GWh).

All interconnectors

Tue 15 Sept
Imported
74GWh
Exported
42GWh
Net in
31GWh
Average net flow
1.31GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.03GWImporting

In 7.3 GWhOut 6.5 GWh

Denmark

Viking Link

Average0.23GWImporting

In 12.5 GWhOut 7.0 GWh

France

IFA · IFA2 · ElecLink

Average0.70GWImporting

In 25.4 GWhOut 8.6 GWh

Ireland

Moyle · East–West · Greenlink

Average0.84GWExporting

In 0.0 GWhOut 20.2 GWh

Netherlands

BritNed

Average0.00GWIdle

In 0.0 GWhOut 0.0 GWh

Norway

North Sea Link

Average1.19GWImporting

In 28.5 GWhOut 0.0 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.32GWPumping

Generated 2.0 GWhPumped 9.5 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.