Electricity Live

Great Britain’s electricity on Tuesday 18 March 2025

On Tuesday 18 March, demand averaged 34.4 GW. Renewables supplied 38%.

34.4GW AVERAGEWind9.40 GW26%Hydro0.28 GW1%Biomass1.94 GW5%Solar3.75 GW11%Gas9.82 GW28%Imports6.72 GW19%Nuclear3.64 GW10%34.4GW AVERAGE26%11%28%19%10%
Price
£94.69/MWh
Day average £94.69
Demand34.4GW
Generation 28.8Transfers 5.6
Fossil fuels28%
Renewables38%
Other35%
Carbon intensityModerate
137g/kWh
0Day average 137300
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Recorded half-hourRecorded half-hourRecorded half-hourRecorded half-hourRecorded half-hourRecorded half-hourRecorded half-hourRecorded half-hourRecorded half-hourRecorded half-hour

Records set on this day

All records

Key moments

On Tuesday 18 March 2025, gas supplied 28% of Great Britain’s electricity and wind 26%. Demand peaked at 40.6 GW at 09:00. Carbon intensity averaged 137 g/kWh and the price £94.69/MWh. Wind generation peaked at 10.9 GW at 19:50. Solar generation peaked at 13.0 GW at 12:00. Carbon intensity was lowest at 13:30 (78 g/kWh) and highest at 18:00 (186 g/kWh). The wholesale price ranged from £69.92/MWh at 15:30 to £125.87/MWh at 06:30. Gas made 34% 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 3.7510.5%Wind 9.4026.4%Gas 9.8227.6%Hydro 0.280.8%Biomass 1.945.5%Nuclear 3.6410.2%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 34.4avgGeneration 28.8avgTransfers 5.6avg
The day in figurespeaks, averages, totals
Peak demand40.6GW · 09:00
Low 26.4 · 05:05Avg 34.40–60 GW
Made in Great Britain84%of demand
Generation 28.8Transfers 5.6 GW
Net imports138GWh
In
159 Out
21
Zero-carbon share59%of generation
Nuclear 13%Hydro 1%Wind 33%Solar 13%

Transfers · Tue 18 Mar

Interconnectors and storage

On Tuesday 18 March 2025, Great Britain imported 159 GWh and exported 21 GWh through its interconnectors. The most came from France (95 GWh), and the most exports went to Ireland (13 GWh).

All interconnectors

Tue 18 Mar
Imported
159GWh
Exported
21GWh
Net in
138GWh
Average net flow
5.76GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.51GWImporting

In 13.8 GWhOut 1.6 GWh

Denmark

Viking Link

Average0.39GWImporting

In 12.6 GWhOut 3.4 GWh

France

IFA · IFA2 · ElecLink

Average3.95GWImporting

In 94.8 GWhOut 0.0 GWh

Ireland

Moyle · East–West · Greenlink

Average0.54GWExporting

In 0.1 GWhOut 13.1 GWh

Netherlands

BritNed

Average0.45GWImporting

In 13.7 GWhOut 2.8 GWh

Norway

North Sea Link

Average1.00GWImporting

In 23.9 GWhOut 0.0 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.16GWPumping

Generated 2.3 GWhPumped 6.1 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.