Electricity Live

Great Britain’s electricity on Tuesday 30 September 2025

On Tuesday 30 September, demand averaged 29.6 GW. Renewables supplied 28%.

29.6GW AVERAGEWind5.81 GW18%Hydro0.34 GW1%Biomass3.13 GW10%Solar2.68 GW8%Gas13.09 GW41%Imports4.42 GW14%Nuclear2.51 GW8%29.6GW AVERAGE18%10%8%41%14%8%
Price
£84.64/MWh
Day average £84.64
Demand29.6GW
Generation 27.6Transfers 2.1
Fossil fuels41%
Renewables28%
Other31%
Carbon intensityModerate
182g/kWh
0Day average 182300
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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 30 September 2025, gas supplied 41% of Great Britain’s electricity and wind 18%. Demand peaked at 36.0 GW at 12:00. Carbon intensity averaged 182 g/kWh and the price £84.64/MWh. Wind generation peaked at 9.0 GW at 23:50. Solar generation peaked at 10.5 GW at 12:00. Carbon intensity was lowest at 23:00 (130 g/kWh) and highest at 07:00 (224 g/kWh). The wholesale price ranged from £69.08/MWh at 04:00 to £121.23/MWh at 18:00. Gas made 48% 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 2.688.4%Wind 5.8118.2%Gas 13.0940.9%Hydro 0.341.1%Biomass 3.139.8%Nuclear 2.517.8%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 29.6avgGeneration 27.6avgTransfers 2.1avg
The day in figurespeaks, averages, totals
Peak demand36.0GW · 12:00
Low 22.6 · 05:20Avg 29.60–40 GW
Made in Great Britain93%of demand
Generation 27.6Transfers 2.1 GW
Net imports48GWh
In
104 Out
56
Zero-carbon share41%of generation
Nuclear 9%Hydro 1%Wind 21%Solar 10%

Transfers · Tue 30 Sept

Interconnectors and storage

On Tuesday 30 September 2025, Great Britain imported 104 GWh and exported 56 GWh through its interconnectors. The most came from France (59 GWh), and the most exports went to Denmark (24 GWh).

All interconnectors

Tue 30 Sept
Imported
104GWh
Exported
56GWh
Net in
48GWh
Average net flow
1.99GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.32GWImporting

In 11.4 GWhOut 3.8 GWh

Denmark

Viking Link

Average0.98GWExporting

In 0.0 GWhOut 23.6 GWh

France

IFA · IFA2 · ElecLink

Average2.47GWImporting

In 59.4 GWhOut 0.0 GWh

Ireland

Moyle · East–West · Greenlink

Average0.57GWExporting

In 0.1 GWhOut 13.7 GWh

Netherlands

BritNed

Average0.55GWExporting

In 1.9 GWhOut 15.1 GWh

Norway

North Sea Link

Average1.30GWImporting

In 31.1 GWhOut 0.0 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.08GWGenerating

Generated 2.2 GWhPumped 0.3 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.