Electricity Live

Great Britain’s electricity on Friday 4 July 2025

On Friday 4 July, demand averaged 28.4 GW. Renewables supplied 54%.

28.4GW AVERAGEWind12.28 GW40%Hydro0.34 GW1%Biomass2.84 GW9%Solar4.03 GW13%Gas4.05 GW13%Imports2.83 GW9%Nuclear4.42 GW14%28.4GW AVERAGE40%9%13%13%9%14%
Price
£47.14/MWh
Day average £47.14
Demand28.4GW
Generation 27.9Transfers 0.4
Fossil fuels13%
Renewables54%
Other33%
Carbon intensityLow
78g/kWh
0Day average 78300
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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 Friday 4 July 2025, wind supplied 40% of Great Britain’s electricity and nuclear 14%. Demand peaked at 35.5 GW at 11:50. Carbon intensity averaged 78 g/kWh and the price £47.14/MWh. Wind generation peaked at 18.0 GW at 14:55. Solar generation peaked at 12.0 GW at 13:30. Carbon intensity was lowest at 14:00 (33 g/kWh) and highest at 00:00 (126 g/kWh). The wholesale price ranged from −£26.17/MWh at 15:00 to £95.05/MWh at 19:30. The price was below zero for 5 hours. Wind made 44% 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 4.0313.1%Wind 12.2839.9%Gas 4.0513.1%Hydro 0.341.1%Biomass 2.849.2%Nuclear 4.4214.4%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 28.4avgGeneration 27.9avgTransfers 0.4avg
The day in figurespeaks, averages, totals
Peak demand35.5GW · 11:50
Low 20.6 · 05:15Avg 28.40–40 GW
Made in Great Britain98%of demand
Generation 27.9Transfers 0.4 GW
Net imports16GWh
In
68 Out
52
Zero-carbon share75%of generation
Nuclear 16%Hydro 1%Wind 44%Solar 14%

Transfers · Fri 4 Jul

Interconnectors and storage

On Friday 4 July 2025, Great Britain imported 68 GWh and exported 52 GWh through its interconnectors. The most came from France (24 GWh), and the most exports went to France (13 GWh).

All interconnectors

Fri 4 Jul
Imported
68GWh
Exported
52GWh
Net in
16GWh
Average net flow
0.65GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.28GWExporting

In 5.0 GWhOut 11.8 GWh

Denmark

Viking Link

Average0.18GWExporting

In 5.4 GWhOut 9.8 GWh

France

IFA · IFA2 · ElecLink

Average0.44GWImporting

In 23.6 GWhOut 13.1 GWh

Ireland

Moyle · East–West · Greenlink

Average0.17GWExporting

In 2.8 GWhOut 7.0 GWh

Netherlands

BritNed

Average0.06GWExporting

In 7.4 GWhOut 8.8 GWh

Norway

North Sea Link

Average0.91GWImporting

In 23.4 GWhOut 1.7 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.20GWPumping

Generated 0.3 GWhPumped 5.2 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.