Electricity Live

Daily record

Great Britain’s electricity on Sunday 20 September 2026

On Sunday 20 September 2026, wind supplied 48% of Great Britain’s electricity and gas 15%. Demand peaked at 33.2 GW at 13:15. Carbon intensity averaged 81 g/kWh and the price £51.23/MWh.

Key moments

  • Wind generation peaked at 19.6 GW at 00:50.
  • Solar generation peaked at 13.1 GW at 13:00.
  • Carbon intensity was lowest at 13:30 (37 g/kWh) and highest at 19:00 (164 g/kWh).
  • The wholesale price ranged from −£19.03/MWh at 16:00 to £197.83/MWh at 21:00. The price was below zero for 9 hours.
  • Wind made 53% 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 3.5911.9%Wind 14.4647.7%Gas 4.4214.6%Hydro 0.381.2%Biomass 1.344.4%Nuclear 3.3311.0%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 26.5avgGeneration 27.5avgTransfers −1.0avg
The day in figurespeaks, averages, totals
Peak demand33.2GW · 13:15
Low 20.1 · 04:55Avg 26.50–40 GW
Made in Great Britain104%of demand
Generation 27.5Transfers −1.0 GW
Net exports15GWh
In
65 Out
80
Zero-carbon share79%of generation
Nuclear 12%Hydro 1%Wind 53%Solar 13%

Transfers · Sun 20 Sept

Interconnectors and storage

On Sunday 20 September 2026, Great Britain imported 65 GWh and exported 80 GWh through its interconnectors. The most came from France (23 GWh), and the most exports went to Ireland (34 GWh).

All interconnectors

Sun 20 Sept
Imported
65GWh
Exported
80GWh
Net out
15GWh
Average net flow
0.63GW out

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.42GWExporting

In 2.7 GWhOut 12.8 GWh

Denmark

Viking Link

Average0.82GWImporting

In 19.8 GWhOut 0.0 GWh

France

IFA · IFA2 · ElecLink

Average0.24GWImporting

In 23.3 GWhOut 17.6 GWh

Ireland

Moyle · East–West · Greenlink

Average1.43GWExporting

In 0.0 GWhOut 34.4 GWh

Netherlands

BritNed

Average0.08GWExporting

In 7.0 GWhOut 9.0 GWh

Norway

North Sea Link

Average0.24GWImporting

In 12.5 GWhOut 6.6 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.42GWPumping

Generated 1.2 GWhPumped 11.1 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.