Electricity Live

Great Britain’s electricity on Saturday 27 September 2025

On Saturday 27 September, demand averaged 27.6 GW. Renewables supplied 40%.

27.6GW AVERAGEWind10.21 GW34%Hydro0.33 GW1%Biomass2.71 GW9%Solar1.42 GW5%Gas7.34 GW25%Imports5.33 GW18%Nuclear2.51 GW8%27.6GW AVERAGE34%9%25%18%8%
Price
£79.03/MWh
Day average £79.03
Demand27.6GW
Generation 24.5Transfers 3.1
Fossil fuels25%
Renewables40%
Other35%
Carbon intensityModerate
122g/kWh
0Day average 122300
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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 27 September 2025, wind supplied 34% of Great Britain’s electricity and gas 25%. Demand peaked at 32.8 GW at 13:50. Carbon intensity averaged 122 g/kWh and the price £79.03/MWh. Wind generation peaked at 12.6 GW at 15:55. Solar generation peaked at 5.2 GW at 13:30. Carbon intensity was lowest at 14:00 (83 g/kWh) and highest at 18:30 (158 g/kWh). The wholesale price ranged from £66.82/MWh at 13:30 to £104.18/MWh at 20:00. Wind made 42% 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 1.424.8%Wind 10.2134.2%Gas 7.3424.6%Hydro 0.331.1%Biomass 2.719.1%Nuclear 2.518.4%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 27.6avgGeneration 24.5avgTransfers 3.1avg
The day in figurespeaks, averages, totals
Peak demand32.8GW · 13:50
Low 21.8 · 05:00Avg 27.60–40 GW
Made in Great Britain89%of demand
Generation 24.5Transfers 3.1 GW
Net imports77GWh
In
127 Out
51
Zero-carbon share59%of generation
Nuclear 10%Hydro 1%Wind 42%Solar 6%

Transfers · Sat 27 Sept

Interconnectors and storage

On Saturday 27 September 2025, Great Britain imported 127 GWh and exported 51 GWh through its interconnectors. The most came from France (72 GWh), and the most exports went to Ireland (24 GWh).

All interconnectors

Sat 27 Sept
Imported
127GWh
Exported
51GWh
Net in
77GWh
Average net flow
3.19GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.25GWExporting

In 0.7 GWhOut 6.7 GWh

Denmark

Viking Link

Average0.49GWImporting

In 16.0 GWhOut 4.3 GWh

France

IFA · IFA2 · ElecLink

Average2.98GWImporting

In 71.5 GWhOut 0.0 GWh

Ireland

Moyle · East–West · Greenlink

Average0.88GWExporting

In 2.5 GWhOut 23.5 GWh

Netherlands

BritNed

Average0.55GWExporting

In 2.9 GWhOut 15.9 GWh

Norway

North Sea Link

Average1.40GWImporting

In 33.5 GWhOut 0.0 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.13GWPumping

Generated 0.8 GWhPumped 3.8 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.