Electricity Live

Great Britain’s electricity on Saturday 15 March 2025

On Saturday 15 March, demand averaged 31.6 GW. Renewables supplied 23%.

31.6GW AVERAGEWind4.84 GW15%Hydro0.38 GW1%Biomass2.98 GW9%Solar2.49 GW7%Gas11.06 GW33%Imports7.92 GW24%Nuclear3.65 GW11%31.6GW AVERAGE15%9%7%33%24%11%
Price
£94.26/MWh
Day average £94.26
Demand31.6GW
Generation 25.4Transfers 6.2
Fossil fuels33%
Renewables23%
Other44%
Carbon intensityModerate
173g/kWh
0Day average 173300
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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 Saturday 15 March 2025, gas supplied 33% of Great Britain’s electricity and wind 15%. Demand peaked at 36.4 GW at 18:45. Carbon intensity averaged 173 g/kWh and the price £94.26/MWh. Wind generation peaked at 6.0 GW at 19:20. Solar generation peaked at 8.1 GW at 12:30. Carbon intensity was lowest at 11:00 (139 g/kWh) and highest at 17:30 (206 g/kWh). The wholesale price ranged from £83.43/MWh at 14:00 to £117.87/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 2.497.5%Wind 4.8414.5%Gas 11.0633.2%Hydro 0.381.1%Biomass 2.988.9%Nuclear 3.6511.0%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 31.6avgGeneration 25.4avgTransfers 6.2avg
The day in figurespeaks, averages, totals
Peak demand36.4GW · 18:45
Low 25.3 · 05:00Avg 31.60–40 GW
Made in Great Britain80%of demand
Generation 25.4Transfers 6.2 GW
Net imports153GWh
In
189 Out
36
Zero-carbon share45%of generation
Nuclear 14%Hydro 2%Wind 19%Solar 10%

Transfers · Sat 15 Mar

Interconnectors and storage

On Saturday 15 March 2025, Great Britain imported 189 GWh and exported 36 GWh through its interconnectors. The most came from France (95 GWh), and the most exports went to Ireland (36 GWh).

All interconnectors

Sat 15 Mar
Imported
189GWh
Exported
36GWh
Net in
153GWh
Average net flow
6.38GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.98GWImporting

In 23.6 GWhOut 0.0 GWh

Denmark

Viking Link

Average0.91GWImporting

In 21.9 GWhOut 0.0 GWh

France

IFA · IFA2 · ElecLink

Average3.95GWImporting

In 94.9 GWhOut 0.0 GWh

Ireland

Moyle · East–West · Greenlink

Average1.48GWExporting

In 0.0 GWhOut 35.5 GWh

Netherlands

BritNed

Average1.01GWImporting

In 24.4 GWhOut 0.0 GWh

Norway

North Sea Link

Average1.00GWImporting

In 23.9 GWhOut 0.0 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.17GWPumping

Generated 1.4 GWhPumped 5.4 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.