Electricity Live

Great Britain’s electricity on Sunday 18 May 2025

On Sunday 18 May, demand averaged 25.0 GW. Renewables supplied 38%.

25.0GW AVERAGEWind6.31 GW24%Hydro0.14 GW1%Biomass1.17 GW4%Solar3.62 GW14%Gas5.17 GW19%Imports5.02 GW19%Nuclear5.24 GW20%25.0GW AVERAGE24%14%19%19%20%
Price
£69.79/MWh
Day average £69.79
Demand25.0GW
Generation 21.7Transfers 3.3
Fossil fuels19%
Renewables38%
Other43%
Carbon intensityLow
97g/kWh
0Day average 97300
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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 Sunday 18 May 2025, wind supplied 24% of Great Britain’s electricity and nuclear 20%. Demand peaked at 29.9 GW at 18:25. Carbon intensity averaged 97 g/kWh and the price £69.79/MWh. Wind generation peaked at 8.1 GW at 00:00. Solar generation peaked at 11.0 GW at 13:30. Carbon intensity was lowest at 14:00 (49 g/kWh) and highest at 20:30 (173 g/kWh). The wholesale price ranged from £15.27/MWh at 14:00 to £96.21/MWh at 20:00. Wind made 29% 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 3.6213.6%Wind 6.3123.6%Gas 5.1719.4%Hydro 0.140.5%Biomass 1.174.4%Nuclear 5.2419.6%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 25.0avgGeneration 21.7avgTransfers 3.3avg
The day in figurespeaks, averages, totals
Peak demand29.9GW · 18:25
Low 18.5 · 05:25Avg 25.00–30 GW
Made in Great Britain87%of demand
Generation 21.7Transfers 3.3 GW
Net imports84GWh
In
119 Out
36
Zero-carbon share71%of generation
Nuclear 24%Hydro 1%Wind 29%Solar 17%

Transfers · Sun 18 May

Interconnectors and storage

On Sunday 18 May 2025, Great Britain imported 119 GWh and exported 36 GWh through its interconnectors. The most came from France (72 GWh), and the most exports went to Ireland (20 GWh).

All interconnectors

Sun 18 May
Imported
119GWh
Exported
36GWh
Net in
84GWh
Average net flow
3.48GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.13GWExporting

In 7.1 GWhOut 10.3 GWh

Denmark

Viking Link

Average0.00GWIdle

In 0.0 GWhOut 0.0 GWh

France

IFA · IFA2 · ElecLink

Average2.99GWImporting

In 71.7 GWhOut 0.0 GWh

Ireland

Moyle · East–West · Greenlink

Average0.83GWExporting

In 0.0 GWhOut 20.0 GWh

Netherlands

BritNed

Average0.06GWImporting

In 7.1 GWhOut 5.7 GWh

Norway

North Sea Link

Average1.40GWImporting

In 33.5 GWhOut 0.0 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.13GWPumping

Generated 1.1 GWhPumped 4.3 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.