Electricity Live

Great Britain’s electricity on Monday 25 September 2023

On Monday 25 September, demand averaged 28.4 GW. Renewables supplied 51%.

28.4GW AVERAGEWind12.90 GW42%Hydro0.46 GW1%Biomass1.16 GW4%Solar2.27 GW7%Gas6.39 GW21%Coal0.71 GW2%Imports1.89 GW6%Nuclear5.14 GW17%28.4GW AVERAGE42%7%21%17%
Price
£45.68/MWh
Day average £45.68
Demand28.4GW
Generation 29.0Transfers −0.6
Fossil fuels21%
Renewables51%
Other27%
Carbon intensityLow
114g/kWh
0Day average 114300
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Recorded half-hourRecorded half-hourRecorded half-hourRecorded half-hourRecorded half-hourRecorded half-hourRecorded half-hourRecorded half-hourRecorded half-hourRecorded half-hour

Records set on this day

All records

Key moments

On Monday 25 September 2023, wind supplied 42% of Great Britain’s electricity and gas 21%. Demand peaked at 34.2 GW at 11:40. Carbon intensity averaged 114 g/kWh and the price £45.68/MWh. Wind generation peaked at 17.0 GW at 00:00. Solar generation peaked at 8.3 GW at 13:00. Carbon intensity was lowest at 00:00 (63 g/kWh) and highest at 19:30 (205 g/kWh). The wholesale price ranged from −£77.29/MWh at 04:00 to £126.70/MWh at 19:00. The price was below zero for 6.5 hours. Wind made 44% of the electricity generated in Great Britain, compared with 33% across 2023.

Charts

Generation, demand, price and carbon

Generation by sourceGW · daily average below
Solar 2.277.3%Wind 12.9041.7%Gas 6.3920.7%Hydro 0.461.5%Biomass 1.163.7%Nuclear 5.1416.6%Coal 0.712.3%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 28.4avgGeneration 29.0avgTransfers −0.6avg
The day in figurespeaks, averages, totals
Peak demand34.2GW · 11:40
Low 19.4 · 03:30Avg 28.40–40 GW
Made in Great Britain102%of demand
Generation 29.0Transfers −0.6 GW
Net exports17GWh
In
40 Out
57
Zero-carbon share72%of generation
Nuclear 18%Hydro 2%Wind 44%Solar 8%

Transfers · Mon 25 Sept

Interconnectors and storage

On Monday 25 September 2023, Great Britain imported 40 GWh and exported 57 GWh through its interconnectors. The most came from Norway (29 GWh), and the most exports went to France (33 GWh).

All interconnectors

Mon 25 Sept
Imported
40GWh
Exported
57GWh
Net out
17GWh
Average net flow
0.71GW out

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.25GWExporting

In 0.0 GWhOut 6.1 GWh

Denmark

Viking Link

Average0.00GWIdle

In 0.0 GWhOut 0.0 GWh

France

IFA · IFA2 · ElecLink

Average1.21GWExporting

In 4.3 GWhOut 33.3 GWh

Ireland

Moyle · East–West · Greenlink

Average0.05GWImporting

In 3.0 GWhOut 1.8 GWh

Netherlands

BritNed

Average0.50GWExporting

In 3.6 GWhOut 15.6 GWh

Norway

North Sea Link

Average1.20GWImporting

In 28.9 GWhOut 0.0 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.08GWGenerating

Generated 5.7 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.