Electricity Live

Great Britain’s electricity on Tuesday 25 March 2025

On Tuesday 25 March, demand averaged 32.0 GW. Renewables supplied 29%.

32.0GW AVERAGEWind7.71 GW23%Hydro0.18 GW1%Biomass1.02 GW3%Solar1.85 GW5%Gas12.83 GW38%Imports6.47 GW19%Nuclear3.87 GW11%32.0GW AVERAGE23%38%19%11%
Price
£91.30/MWh
Day average £91.30
Demand32.0GW
Generation 27.5Transfers 4.5
Fossil fuels38%
Renewables29%
Other33%
Carbon intensityModerate
172g/kWh
0Day average 172300
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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 25 March 2025, gas supplied 38% of Great Britain’s electricity and wind 23%. Demand peaked at 37.3 GW at 09:30. Carbon intensity averaged 172 g/kWh and the price £91.30/MWh. Wind generation peaked at 10.9 GW at 00:30. Solar generation peaked at 6.5 GW at 11:30. Carbon intensity was lowest at 02:30 (123 g/kWh) and highest at 20:00 (243 g/kWh). The wholesale price ranged from £73.28/MWh at 13:30 to £124.15/MWh at 18:30. Gas made 47% 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 1.855.5%Wind 7.7122.7%Gas 12.8337.8%Hydro 0.180.5%Biomass 1.023.0%Nuclear 3.8711.4%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 32.0avgGeneration 27.5avgTransfers 4.5avg
The day in figurespeaks, averages, totals
Peak demand37.3GW · 09:30
Low 23.6 · 04:05Avg 32.00–40 GW
Made in Great Britain86%of demand
Generation 27.5Transfers 4.5 GW
Net imports108GWh
In
150 Out
42
Zero-carbon share50%of generation
Nuclear 14%Hydro 1%Wind 28%Solar 7%

Transfers · Tue 25 Mar

Interconnectors and storage

On Tuesday 25 March 2025, Great Britain imported 150 GWh and exported 42 GWh through its interconnectors. The most came from France (91 GWh), and the most exports went to Ireland (30 GWh).

All interconnectors

Tue 25 Mar
Imported
150GWh
Exported
42GWh
Net in
108GWh
Average net flow
4.51GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.19GWImporting

In 8.4 GWhOut 3.8 GWh

Denmark

Viking Link

Average0.59GWImporting

In 15.5 GWhOut 1.3 GWh

France

IFA · IFA2 · ElecLink

Average3.78GWImporting

In 90.7 GWhOut 0.0 GWh

Ireland

Moyle · East–West · Greenlink

Average1.27GWExporting

In 0.0 GWhOut 30.4 GWh

Netherlands

BritNed

Average0.21GWImporting

In 11.5 GWhOut 6.4 GWh

Norway

North Sea Link

Average1.00GWImporting

In 23.9 GWhOut 0.0 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.00GWIdle

Generated 5.3 GWhPumped 5.3 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.