Electricity Live

Great Britain’s electricity on Monday 18 September 2023

On Monday 18 September, demand averaged 28.3 GW. Renewables supplied 51%.

28.3GW AVERAGEWind13.35 GW45%Hydro0.23 GW1%Biomass1.17 GW4%Solar1.57 GW5%Gas4.01 GW14%Coal0.01 GW0%Imports4.01 GW14%Nuclear5.19 GW18%28.3GW AVERAGE45%14%14%18%
Price
£76.83/MWh
Day average £76.83
Demand28.3GW
Generation 25.5Transfers 2.8
Fossil fuels14%
Renewables51%
Other35%
Carbon intensityLow
69g/kWh
0Day average 69300
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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

Key moments

On Monday 18 September 2023, wind supplied 45% of Great Britain’s electricity and nuclear 18%. Demand peaked at 34.7 GW at 12:05. Carbon intensity averaged 69 g/kWh and the price £76.83/MWh. Wind generation peaked at 17.3 GW at 22:40. Solar generation peaked at 5.8 GW at 14:00. Carbon intensity was lowest at 14:30 (29 g/kWh) and highest at 06:00 (111 g/kWh). The wholesale price ranged from −£3.50/MWh at 23:30 to £123.32/MWh at 07:30. The price was below zero for 0.5 hours. Wind made 52% 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 1.575.3%Wind 13.3545.2%Gas 4.0113.6%Hydro 0.230.8%Biomass 1.174.0%Nuclear 5.1917.6%Coal 0.010.0%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 28.3avgGeneration 25.5avgTransfers 2.8avg
The day in figurespeaks, averages, totals
Peak demand34.7GW · 12:05
Low 19.5 · 03:30Avg 28.30–40 GW
Made in Great Britain90%of demand
Generation 25.5Transfers 2.8 GW
Net imports70GWh
In
95 Out
24
Zero-carbon share80%of generation
Nuclear 20%Hydro 1%Wind 52%Solar 6%

Transfers · Mon 18 Sept

Interconnectors and storage

On Monday 18 September 2023, Great Britain imported 95 GWh and exported 24 GWh through its interconnectors. The most came from France (53 GWh), and the most exports went to Ireland (14 GWh).

All interconnectors

Mon 18 Sept
Imported
95GWh
Exported
24GWh
Net in
70GWh
Average net flow
2.93GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.13GWImporting

In 8.2 GWhOut 5.0 GWh

Denmark

Viking Link

Average0.00GWIdle

In 0.0 GWhOut 0.0 GWh

France

IFA · IFA2 · ElecLink

Average2.20GWImporting

In 52.9 GWhOut 0.1 GWh

Ireland

Moyle · East–West · Greenlink

Average0.60GWExporting

In 0.0 GWhOut 14.5 GWh

Netherlands

BritNed

Average0.20GWExporting

In 0.0 GWhOut 4.7 GWh

Norway

North Sea Link

Average1.40GWImporting

In 33.6 GWhOut 0.0 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.18GWPumping

Generated 1.5 GWhPumped 5.9 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.