Electricity Live

Great Britain’s electricity on Sunday 31 August 2025

On Sunday 31 August, demand averaged 25.5 GW. Renewables supplied 67%.

25.5GW AVERAGEWind16.20 GW56%Hydro0.19 GW1%Biomass0.73 GW3%Solar3.18 GW11%Gas3.48 GW12%Imports1.52 GW5%Nuclear3.75 GW13%25.5GW AVERAGE56%11%12%13%
Price
£28.13/MWh
Day average £28.13
Demand25.5GW
Generation 27.5Transfers −2.0
Fossil fuels12%
Renewables67%
Other21%
Carbon intensityLow
59g/kWh
0Day average 59300
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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

On the record lists

All records

Key moments

On Sunday 31 August 2025, wind supplied 56% of Great Britain’s electricity and nuclear 13%. Demand peaked at 31.0 GW at 13:25. Carbon intensity averaged 59 g/kWh and the price £28.13/MWh. Wind generation peaked at 18.7 GW at 17:25. Solar generation peaked at 9.9 GW at 11:30. Carbon intensity was lowest at 13:00 (34 g/kWh) and highest at 21:30 (81 g/kWh). The wholesale price ranged from −£5.99/MWh at 13:30 to £92.89/MWh at 20:30. The price was below zero for 9.5 hours. Wind made 59% of the electricity generated in Great Britain, compared with 35% across 2025.

Charts

Generation, demand, price and carbon

Generation by sourceGW · daily average below
Solar 3.1811.0%Wind 16.2055.8%Gas 3.4812.0%Hydro 0.190.7%Biomass 0.732.5%Nuclear 3.7512.9%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 25.5avgGeneration 27.5avgTransfers −2.0avg
The day in figurespeaks, averages, totals
Peak demand31.0GW · 13:25
Low 18.5 · 06:25Avg 25.50–40 GW
Made in Great Britain108%of demand
Generation 27.5Transfers −2.0 GW
Net exports48GWh
In
34 Out
82
Zero-carbon share85%of generation
Nuclear 14%Hydro 1%Wind 59%Solar 12%

Transfers · Sun 31 Aug

Interconnectors and storage

On Sunday 31 August 2025, Great Britain imported 34 GWh and exported 82 GWh through its interconnectors. The most came from France (34 GWh), and the most exports went to Denmark (24 GWh).

All interconnectors

Sun 31 Aug
Imported
34GWh
Exported
82GWh
Net out
48GWh
Average net flow
1.99GW out

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.78GWExporting

In 0.1 GWhOut 18.8 GWh

Denmark

Viking Link

Average1.01GWExporting

In 0.0 GWhOut 24.1 GWh

France

IFA · IFA2 · ElecLink

Average1.04GWImporting

In 33.7 GWhOut 8.8 GWh

Ireland

Moyle · East–West · Greenlink

Average0.41GWExporting

In 0.7 GWhOut 10.6 GWh

Netherlands

BritNed

Average0.83GWExporting

In 0.0 GWhOut 20.0 GWh

Norway

North Sea Link

Average0.00GWIdle

In 0.0 GWhOut 0.0 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.05GWPumping

Generated 2.1 GWhPumped 3.3 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.