Electricity Live

Great Britain’s electricity on Tuesday 27 May 2025

On Tuesday 27 May, demand averaged 28.2 GW. Renewables supplied 48%.

28.2GW AVERAGEWind12.59 GW42%Hydro0.21 GW1%Biomass1.08 GW4%Solar1.62 GW5%Gas5.37 GW18%Imports4.56 GW15%Nuclear4.90 GW16%28.2GW AVERAGE42%18%15%16%
Price
£70.62/MWh
Day average £70.62
Demand28.2GW
Generation 25.8Transfers 2.4
Fossil fuels18%
Renewables48%
Other35%
Carbon intensityLow
90g/kWh
0Day average 90300
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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 Tuesday 27 May 2025, wind supplied 42% of Great Britain’s electricity and gas 18%. Demand peaked at 33.5 GW at 15:05. Carbon intensity averaged 90 g/kWh and the price £70.62/MWh. Wind generation peaked at 17.9 GW at 03:35. Solar generation peaked at 4.2 GW at 09:00. Carbon intensity was lowest at 02:30 (42 g/kWh) and highest at 18:00 (143 g/kWh). The wholesale price ranged from £7.96/MWh at 05:00 to £111.77/MWh at 19:30. Wind made 49% 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 1.625.4%Wind 12.5941.5%Gas 5.3717.7%Hydro 0.210.7%Biomass 1.083.5%Nuclear 4.9016.2%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 28.2avgGeneration 25.8avgTransfers 2.4avg
The day in figurespeaks, averages, totals
Peak demand33.5GW · 15:05
Low 20.4 · 05:05Avg 28.20–40 GW
Made in Great Britain91%of demand
Generation 25.8Transfers 2.4 GW
Net imports57GWh
In
107 Out
50
Zero-carbon share75%of generation
Nuclear 19%Hydro 1%Wind 49%Solar 6%

Transfers · Tue 27 May

Interconnectors and storage

On Tuesday 27 May 2025, Great Britain imported 107 GWh and exported 50 GWh through its interconnectors. The most came from France (43 GWh), and the most exports went to Ireland (24 GWh).

All interconnectors

Tue 27 May
Imported
107GWh
Exported
50GWh
Net in
57GWh
Average net flow
2.37GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.30GWImporting

In 14.5 GWhOut 7.4 GWh

Denmark

Viking Link

Average0.64GWImporting

In 18.0 GWhOut 2.6 GWh

France

IFA · IFA2 · ElecLink

Average1.79GWImporting

In 43.0 GWhOut 0.2 GWh

Ireland

Moyle · East–West · Greenlink

Average1.02GWExporting

In 0.0 GWhOut 24.5 GWh

Netherlands

BritNed

Average0.03GWImporting

In 10.8 GWhOut 10.0 GWh

Norway

North Sea Link

Average0.63GWImporting

In 20.7 GWhOut 5.6 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.05GWGenerating

Generated 2.3 GWhPumped 1.1 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.