Electricity Live

Great Britain’s electricity on Wednesday 18 June 2025

On Wednesday 18 June, demand averaged 28.5 GW. Renewables supplied 30%.

28.5GW AVERAGEWind4.26 GW14%Hydro0.28 GW1%Biomass3.03 GW10%Solar4.51 GW15%Gas7.99 GW26%Imports5.62 GW18%Nuclear4.75 GW16%28.5GW AVERAGE14%10%15%26%18%16%
Price
£101.83/MWh
Day average £101.83
Demand28.5GW
Generation 24.8Transfers 3.7
Fossil fuels26%
Renewables30%
Other44%
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 18 June 2025, gas supplied 26% of Great Britain’s electricity and nuclear 16%. Demand peaked at 34.8 GW at 12:50. Carbon intensity averaged 140 g/kWh and the price £101.83/MWh. Wind generation peaked at 6.5 GW at 00:50. Solar generation peaked at 13.1 GW at 12:30. Carbon intensity was lowest at 13:30 (81 g/kWh) and highest at 22:00 (216 g/kWh). The wholesale price ranged from £76.58/MWh at 13:30 to £137.85/MWh at 20:00. Gas made 32% 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 4.5114.8%Wind 4.2614.0%Gas 7.9926.2%Hydro 0.280.9%Biomass 3.0310.0%Nuclear 4.7515.6%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 28.5avgGeneration 24.8avgTransfers 3.7avg
The day in figurespeaks, averages, totals
Peak demand34.8GW · 12:50
Low 20.6 · 05:00Avg 28.50–40 GW
Made in Great Britain87%of demand
Generation 24.8Transfers 3.7 GW
Net imports85GWh
In
131 Out
46
Zero-carbon share56%of generation
Nuclear 19%Hydro 1%Wind 17%Solar 18%

Transfers · Wed 18 Jun

Interconnectors and storage

On Wednesday 18 June 2025, Great Britain imported 131 GWh and exported 46 GWh through its interconnectors. The most came from France (56 GWh), and the most exports went to Ireland (31 GWh).

All interconnectors

Wed 18 Jun
Imported
131GWh
Exported
46GWh
Net in
85GWh
Average net flow
3.53GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.23GWImporting

In 11.0 GWhOut 5.5 GWh

Denmark

Viking Link

Average0.72GWImporting

In 19.2 GWhOut 2.0 GWh

France

IFA · IFA2 · ElecLink

Average2.35GWImporting

In 56.3 GWhOut 0.0 GWh

Ireland

Moyle · East–West · Greenlink

Average1.29GWExporting

In 0.0 GWhOut 31.0 GWh

Netherlands

BritNed

Average0.13GWImporting

In 10.5 GWhOut 7.3 GWh

Norway

North Sea Link

Average1.39GWImporting

In 33.5 GWhOut 0.0 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.18GWGenerating

Generated 4.4 GWhPumped 0.0 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.