Electricity Live

Great Britain’s electricity on Tuesday 4 March 2025

On Tuesday 4 March, demand averaged 34.5 GW. Renewables supplied 43%.

34.5GW AVERAGEWind12.35 GW34%Hydro0.34 GW1%Biomass2.53 GW7%Solar2.80 GW8%Gas9.26 GW26%Imports4.39 GW12%Nuclear4.20 GW12%34.5GW AVERAGE34%7%8%26%12%12%
Price
£83.81/MWh
Day average £83.81
Demand34.5GW
Generation 31.5Transfers 3.1
Fossil fuels26%
Renewables43%
Other31%
Carbon intensityModerate
126g/kWh
0Day average 126300
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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 4 March 2025, wind supplied 34% of Great Britain’s electricity and gas 26%. Demand peaked at 41.3 GW at 09:00. Carbon intensity averaged 126 g/kWh and the price £83.81/MWh. Wind generation peaked at 17.1 GW at 21:25. Solar generation peaked at 10.5 GW at 12:30. Carbon intensity was lowest at 13:00 (54 g/kWh) and highest at 06:00 (196 g/kWh). The wholesale price ranged from £41.21/MWh at 13:30 to £134.29/MWh at 06:30. Wind made 39% 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 2.807.8%Wind 12.3534.4%Gas 9.2625.8%Hydro 0.341.0%Biomass 2.537.1%Nuclear 4.2011.7%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 34.5avgGeneration 31.5avgTransfers 3.1avg
The day in figurespeaks, averages, totals
Peak demand41.3GW · 09:00
Low 25.7 · 04:05Avg 34.50–60 GW
Made in Great Britain91%of demand
Generation 31.5Transfers 3.1 GW
Net imports80GWh
In
104 Out
24
Zero-carbon share63%of generation
Nuclear 13%Hydro 1%Wind 39%Solar 9%

Transfers · Tue 4 Mar

Interconnectors and storage

On Tuesday 4 March 2025, Great Britain imported 104 GWh and exported 24 GWh through its interconnectors. The most came from France (35 GWh), and the most exports went to Ireland (11 GWh).

All interconnectors

Tue 4 Mar
Imported
104GWh
Exported
24GWh
Net in
80GWh
Average net flow
3.33GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.03GWExporting

In 5.5 GWhOut 6.2 GWh

Denmark

Viking Link

Average1.31GWImporting

In 31.4 GWhOut 0.0 GWh

France

IFA · IFA2 · ElecLink

Average1.38GWImporting

In 35.1 GWhOut 2.0 GWh

Ireland

Moyle · East–West · Greenlink

Average0.44GWExporting

In 0.7 GWhOut 11.2 GWh

Netherlands

BritNed

Average0.16GWImporting

In 8.4 GWhOut 4.4 GWh

Norway

North Sea Link

Average0.95GWImporting

In 22.8 GWhOut 0.0 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.28GWPumping

Generated 1.5 GWhPumped 8.2 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.