Electricity Live

Great Britain’s electricity on Wednesday 20 August 2025

On Wednesday 20 August, demand averaged 27.3 GW. Renewables supplied 36%.

27.3GW AVERAGEWind8.22 GW28%Hydro0.36 GW1%Biomass2.45 GW8%Solar1.96 GW7%Gas8.53 GW29%Imports4.92 GW17%Nuclear2.98 GW10%27.3GW AVERAGE28%8%29%17%10%
Price
£90.82/MWh
Day average £90.82
Demand27.3GW
Generation 24.5Transfers 2.8
Fossil fuels29%
Renewables36%
Other35%
Carbon intensityModerate
140g/kWh
0Day average 140300
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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 Wednesday 20 August 2025, gas supplied 29% of Great Britain’s electricity and wind 28%. Demand peaked at 32.1 GW at 13:50. Carbon intensity averaged 140 g/kWh and the price £90.82/MWh. Wind generation peaked at 11.7 GW at 00:45. Solar generation peaked at 5.9 GW at 13:30. Carbon intensity was lowest at 00:00 (87 g/kWh) and highest at 20:00 (177 g/kWh). The wholesale price ranged from £71.62/MWh at 02:30 to £120.40/MWh at 19:00. Gas made 35% 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 1.966.7%Wind 8.2228.0%Gas 8.5329.0%Hydro 0.361.2%Biomass 2.458.3%Nuclear 2.9810.1%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 27.3avgGeneration 24.5avgTransfers 2.8avg
The day in figurespeaks, averages, totals
Peak demand32.1GW · 13:50
Low 20.5 · 04:00Avg 27.30–40 GW
Made in Great Britain90%of demand
Generation 24.5Transfers 2.8 GW
Net imports66GWh
In
116 Out
50
Zero-carbon share55%of generation
Nuclear 12%Hydro 1%Wind 34%Solar 8%

Transfers · Wed 20 Aug

Interconnectors and storage

On Wednesday 20 August 2025, Great Britain imported 116 GWh and exported 50 GWh through its interconnectors. The most came from France (69 GWh), and the most exports went to Ireland (33 GWh).

All interconnectors

Wed 20 Aug
Imported
116GWh
Exported
50GWh
Net in
66GWh
Average net flow
2.76GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.25GWImporting

In 7.8 GWhOut 1.9 GWh

Denmark

Viking Link

Average0.10GWExporting

In 8.0 GWhOut 10.2 GWh

France

IFA · IFA2 · ElecLink

Average2.86GWImporting

In 68.6 GWhOut 0.0 GWh

Ireland

Moyle · East–West · Greenlink

Average1.36GWExporting

In 0.0 GWhOut 32.6 GWh

Netherlands

BritNed

Average0.20GWImporting

In 9.7 GWhOut 4.9 GWh

Norway

North Sea Link

Average0.90GWImporting

In 21.8 GWhOut 0.1 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.07GWGenerating

Generated 2.2 GWhPumped 0.5 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.