Electricity Live

Great Britain’s electricity on Saturday 31 May 2025

On Saturday 31 May, demand averaged 25.4 GW. Renewables supplied 45%.

25.4GW AVERAGEWind8.49 GW31%Hydro0.21 GW1%Biomass1.93 GW7%Solar3.58 GW13%Gas4.22 GW15%Imports4.01 GW15%Nuclear4.90 GW18%25.4GW AVERAGE31%7%13%15%15%18%
Price
£56.71/MWh
Day average £56.71
Demand25.4GW
Generation 23.3Transfers 2.0
Fossil fuels15%
Renewables45%
Other40%
Carbon intensityLow
86g/kWh
0Day average 86300
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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 Saturday 31 May 2025, wind supplied 31% of Great Britain’s electricity and nuclear 18%. Demand peaked at 31.2 GW at 12:45. Carbon intensity averaged 86 g/kWh and the price £56.71/MWh. Wind generation peaked at 12.5 GW at 14:00. Solar generation peaked at 10.4 GW at 12:00. Carbon intensity was lowest at 14:30 (43 g/kWh) and highest at 00:00 (136 g/kWh). The wholesale price ranged from −£2.39/MWh at 14:30 to £92.42/MWh at 18:00. The price was below zero for 2 hours. Wind made 36% 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 3.5813.1%Wind 8.4931.1%Gas 4.2215.4%Hydro 0.210.8%Biomass 1.937.1%Nuclear 4.9017.9%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 25.4avgGeneration 23.3avgTransfers 2.0avg
The day in figurespeaks, averages, totals
Peak demand31.2GW · 12:45
Low 18.9 · 04:35Avg 25.40–40 GW
Made in Great Britain92%of demand
Generation 23.3Transfers 2.0 GW
Net imports51GWh
In
93 Out
42
Zero-carbon share74%of generation
Nuclear 21%Hydro 1%Wind 36%Solar 15%

Transfers · Sat 31 May

Interconnectors and storage

On Saturday 31 May 2025, Great Britain imported 93 GWh and exported 42 GWh through its interconnectors. The most came from France (50 GWh), and the most exports went to Netherlands (13 GWh).

All interconnectors

Sat 31 May
Imported
93GWh
Exported
42GWh
Net in
51GWh
Average net flow
2.12GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.12GWExporting

In 6.6 GWhOut 9.5 GWh

Denmark

Viking Link

Average0.11GWExporting

In 7.0 GWhOut 9.7 GWh

France

IFA · IFA2 · ElecLink

Average2.08GWImporting

In 49.8 GWhOut 0.0 GWh

Ireland

Moyle · East–West · Greenlink

Average0.03GWExporting

In 4.7 GWhOut 5.5 GWh

Netherlands

BritNed

Average0.34GWExporting

In 4.9 GWhOut 13.0 GWh

Norway

North Sea Link

Average0.64GWImporting

In 20.1 GWhOut 4.7 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.09GWPumping

Generated 2.9 GWhPumped 5.0 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.