Electricity Live

Great Britain’s electricity on Wednesday 12 March 2025

On Wednesday 12 March, demand averaged 34.4 GW. Renewables supplied 35%.

34.4GW AVERAGEWind10.56 GW29%Hydro0.38 GW1%Biomass2.32 GW6%Solar1.76 GW5%Gas14.72 GW40%Imports3.40 GW9%Nuclear3.65 GW10%34.4GW AVERAGE29%40%9%10%
Price
£98.83/MWh
Day average £98.83
Demand34.4GW
Generation 33.4Transfers 1.0
Fossil fuels40%
Renewables35%
Other25%
Carbon intensityModerate
170g/kWh
0Day average 170300
Save as image
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 Wednesday 12 March 2025, gas supplied 40% of Great Britain’s electricity and wind 29%. Demand peaked at 40.1 GW at 13:50. Carbon intensity averaged 170 g/kWh and the price £98.83/MWh. Wind generation peaked at 11.9 GW at 10:05. Solar generation peaked at 6.1 GW at 12:30. Carbon intensity was lowest at 02:00 (117 g/kWh) and highest at 20:30 (231 g/kWh). The wholesale price ranged from £75.63/MWh at 03:30 to £145.26/MWh at 18:30. Gas made 44% 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 1.764.8%Wind 10.5628.7%Gas 14.7240.0%Hydro 0.381.0%Biomass 2.326.3%Nuclear 3.659.9%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 34.4avgGeneration 33.4avgTransfers 1.0avg
The day in figurespeaks, averages, totals
Peak demand40.1GW · 13:50
Low 25.3 · 04:00Avg 34.40–60 GW
Made in Great Britain97%of demand
Generation 33.4Transfers 1.0 GW
Net imports26GWh
In
77 Out
51
Zero-carbon share49%of generation
Nuclear 11%Hydro 1%Wind 32%Solar 5%

Transfers · Wed 12 Mar

Interconnectors and storage

On Wednesday 12 March 2025, Great Britain imported 77 GWh and exported 51 GWh through its interconnectors. The most came from France (51 GWh), and the most exports went to Ireland (17 GWh).

All interconnectors

Wed 12 Mar
Imported
77GWh
Exported
51GWh
Net in
26GWh
Average net flow
1.08GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.37GWExporting

In 1.3 GWhOut 10.0 GWh

Denmark

Viking Link

Average0.64GWExporting

In 0.2 GWhOut 15.4 GWh

France

IFA · IFA2 · ElecLink

Average2.10GWImporting

In 50.5 GWhOut 0.1 GWh

Ireland

Moyle · East–West · Greenlink

Average0.71GWExporting

In 0.0 GWhOut 17.0 GWh

Netherlands

BritNed

Average0.20GWExporting

In 3.7 GWhOut 8.5 GWh

Norway

North Sea Link

Average0.89GWImporting

In 21.4 GWhOut 0.0 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.03GWPumping

Generated 4.4 GWhPumped 5.1 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.