Electricity Live

Great Britain’s electricity on Tuesday 12 September 2023

On Tuesday 12 September, demand averaged 28.3 GW. Renewables supplied 17%.

28.3GW AVERAGEWind4.15 GW13%Hydro0.17 GW1%Biomass1.56 GW5%Solar1.08 GW3%Gas16.33 GW52%Coal0.76 GW2%Imports1.91 GW6%Nuclear5.17 GW17%28.3GW AVERAGE13%52%17%
Price
£92.60/MWh
Day average £92.60
Demand28.3GW
Generation 29.2Transfers −0.9
Fossil fuels52%
Renewables17%
Other28%
Carbon intensityHigh
236g/kWh
0Day average 236300
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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 12 September 2023, gas supplied 52% of Great Britain’s electricity and nuclear 17%. Demand peaked at 34.3 GW at 13:00. Carbon intensity averaged 236 g/kWh and the price £92.60/MWh. Wind generation peaked at 7.4 GW at 19:55. Solar generation peaked at 4.0 GW at 13:00. Carbon intensity was lowest at 23:30 (137 g/kWh) and highest at 06:30 (271 g/kWh). The wholesale price ranged from £68.70/MWh at 03:00 to £135.99/MWh at 07:30. Gas made 56% of the electricity generated in Great Britain, compared with 36% across 2023.

Charts

Generation, demand, price and carbon

Generation by sourceGW · daily average below
Solar 1.083.5%Wind 4.1513.3%Gas 16.3352.5%Hydro 0.170.5%Biomass 1.565.0%Nuclear 5.1716.6%Coal 0.762.4%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 28.3avgGeneration 29.2avgTransfers −0.9avg
The day in figurespeaks, averages, totals
Peak demand34.3GW · 13:00
Low 20.4 · 04:35Avg 28.30–40 GW
Made in Great Britain103%of demand
Generation 29.2Transfers −0.9 GW
Net exports20GWh
In
44 Out
64
Zero-carbon share36%of generation
Nuclear 18%Hydro 1%Wind 14%Solar 4%

Transfers · Tue 12 Sept

Interconnectors and storage

On Tuesday 12 September 2023, Great Britain imported 44 GWh and exported 64 GWh through its interconnectors. The most came from Norway (34 GWh), and the most exports went to France (18 GWh).

All interconnectors

Tue 12 Sept
Imported
44GWh
Exported
64GWh
Net out
20GWh
Average net flow
0.85GW out

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.55GWExporting

In 1.0 GWhOut 14.1 GWh

Denmark

Viking Link

Average0.00GWIdle

In 0.0 GWhOut 0.0 GWh

France

IFA · IFA2 · ElecLink

Average0.49GWExporting

In 6.3 GWhOut 18.1 GWh

Ireland

Moyle · East–West · Greenlink

Average0.65GWExporting

In 0.1 GWhOut 15.7 GWh

Netherlands

BritNed

Average0.56GWExporting

In 3.1 GWhOut 16.6 GWh

Norway

North Sea Link

Average1.40GWImporting

In 33.6 GWhOut 0.0 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.03GWPumping

Generated 1.8 GWhPumped 2.5 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.