Electricity Live

Daily record

Great Britain’s electricity on Tuesday 21 July 2026

On Tuesday 21 July 2026, gas supplied 25% of Great Britain’s electricity and wind 16%. Demand peaked at 33.3 GW at 14:55. Carbon intensity averaged 137 g/kWh and the price £138.50/MWh.

Key moments

  • Wind generation peaked at 6.8 GW at 21:55.
  • Solar generation peaked at 10.0 GW at 14:00.
  • Carbon intensity was lowest at 14:00 (93 g/kWh) and highest at 00:00 (171 g/kWh).
  • The wholesale price ranged from £114.95/MWh at 17:30 to £167.52/MWh at 20:30.
  • Gas made 34% of the electricity generated in Great Britain, compared with 28% across 2026 so far.

Charts

Generation, demand, price and carbon

Generation by sourceGW · daily average below
Solar 3.6412.5%Wind 4.6916.1%Gas 7.3625.3%Hydro 0.250.9%Biomass 2.458.4%Nuclear 3.4611.9%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 27.7avgGeneration 21.9avgTransfers 5.9avg
The day in figurespeaks, averages, totals
Peak demand33.3GW · 14:55
Low 20.3 · 05:15Avg 27.70–40 GW
Made in Great Britain79%of demand
Generation 21.9Transfers 5.9 GW
Net imports139GWh
In
170 Out
31
Zero-carbon share55%of generation
Nuclear 16%Hydro 1%Wind 21%Solar 17%

Transfers · Tue 21 Jul

Interconnectors and storage

On Tuesday 21 July 2026, Great Britain imported 170 GWh and exported 31 GWh through its interconnectors. The most came from France (85 GWh), and the most exports went to Ireland (30 GWh).

All interconnectors

Tue 21 Jul
Imported
170GWh
Exported
31GWh
Net in
139GWh
Average net flow
5.80GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.50GWImporting

In 12.2 GWhOut 0.3 GWh

Denmark

Viking Link

Average1.02GWImporting

In 24.9 GWhOut 0.3 GWh

France

IFA · IFA2 · ElecLink

Average3.53GWImporting

In 84.8 GWhOut 0.0 GWh

Ireland

Moyle · East–West · Greenlink

Average1.23GWExporting

In 0.0 GWhOut 29.6 GWh

Netherlands

BritNed

Average0.58GWImporting

In 14.5 GWhOut 0.6 GWh

Norway

North Sea Link

Average1.40GWImporting

In 33.5 GWhOut 0.0 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.09GWGenerating

Generated 3.7 GWhPumped 1.5 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.