Electricity Live

Great Britain’s electricity on Monday 21 July 2025

On Monday 21 July, demand averaged 27.7 GW. Renewables supplied 23%.

27.7GW AVERAGEWind3.14 GW11%Hydro0.27 GW1%Biomass1.89 GW7%Solar3.08 GW11%Gas9.17 GW32%Imports6.38 GW22%Nuclear4.70 GW16%27.7GW AVERAGE11%11%32%22%16%
Price
£79.94/MWh
Day average £79.94
Demand27.7GW
Generation 22.2Transfers 5.5
Fossil fuels32%
Renewables23%
Other45%
Carbon intensityModerate
154g/kWh
0Day average 154300
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Recorded half-hourRecorded half-hourRecorded half-hourRecorded half-hourRecorded half-hourRecorded half-hourRecorded half-hourRecorded half-hourRecorded half-hourRecorded half-hourRecorded half-hour

Key moments

On Monday 21 July 2025, gas supplied 32% of Great Britain’s electricity and nuclear 16%. Demand peaked at 34.7 GW at 12:25. Carbon intensity averaged 154 g/kWh and the price £79.94/MWh. Wind generation peaked at 5.6 GW at 00:35. Solar generation peaked at 9.1 GW at 11:30. Carbon intensity was lowest at 00:00 (121 g/kWh) and highest at 21:30 (191 g/kWh). The wholesale price ranged from £66.30/MWh at 04:30 to £90.36/MWh at 09:00. Gas made 41% of the electricity generated in Great Britain, compared with 32% across 2025.

Charts

Generation, demand, price and carbon

Generation by sourceGW · daily average below
Solar 3.0810.7%Wind 3.1411.0%Gas 9.1732.0%Hydro 0.270.9%Biomass 1.896.6%Nuclear 4.7016.4%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 27.7avgGeneration 22.2avgTransfers 5.5avg
The day in figurespeaks, averages, totals
Peak demand34.7GW · 12:25
Low 19.7 · 04:45Avg 27.70–40 GW
Made in Great Britain80%of demand
Generation 22.2Transfers 5.5 GW
Net imports132GWh
In
152 Out
20
Zero-carbon share50%of generation
Nuclear 21%Hydro 1%Wind 14%Solar 14%

Transfers · Mon 21 Jul

Interconnectors and storage

On Monday 21 July 2025, Great Britain imported 152 GWh and exported 20 GWh through its interconnectors. The most came from France (91 GWh), and the most exports went to Netherlands (11 GWh).

All interconnectors

Mon 21 Jul
Imported
152GWh
Exported
20GWh
Net in
132GWh
Average net flow
5.50GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.63GWImporting

In 15.4 GWhOut 0.4 GWh

Denmark

Viking Link

Average0.17GWExporting

In 1.9 GWhOut 6.1 GWh

France

IFA · IFA2 · ElecLink

Average3.81GWImporting

In 91.5 GWhOut 0.0 GWh

Ireland

Moyle · East–West · Greenlink

Average0.07GWExporting

In 1.3 GWhOut 3.0 GWh

Netherlands

BritNed

Average0.09GWExporting

In 9.0 GWhOut 11.0 GWh

Norway

North Sea Link

Average1.40GWImporting

In 33.5 GWhOut 0.0 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.03GWPumping

Generated 0.7 GWhPumped 1.3 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.