Electricity Live

Great Britain’s electricity on Tuesday 18 September 2018

On Tuesday 18 September, demand averaged 31.2 GW. Renewables supplied 41%.

31.2GW AVERAGEWind11.39 GW36%Hydro0.51 GW2%Biomass1.91 GW6%Solar1.08 GW3%Gas6.83 GW21%Coal0.93 GW3%Imports2.00 GW6%Nuclear7.24 GW23%31.2GW AVERAGE36%21%23%
Price
£47.57/MWh
Day average £47.57
Demand31.2GW
Generation 29.9Transfers 1.4
Fossil fuels21%
Renewables41%
Other35%
Carbon intensityLow
140g/kWh
0Day average 140300
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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 Tuesday 18 September 2018, wind supplied 36% of Great Britain’s electricity and nuclear 23%. Demand peaked at 37.5 GW at 16:55. Carbon intensity averaged 140 g/kWh and the price £47.57/MWh. Wind generation peaked at 13.5 GW at 13:40. Solar generation peaked at 4.5 GW at 12:30. Carbon intensity was lowest at 04:30 (89 g/kWh) and highest at 09:00 (184 g/kWh). The wholesale price ranged from −£24.62/MWh at 02:30 to £82.97/MWh at 08:00. The price was below zero for 5 hours. Wind made 38% of the electricity generated in Great Britain, compared with 19% across 2018.

Charts

Generation, demand, price and carbon

Generation by sourceGW · daily average below
Solar 1.083.4%Wind 11.3935.7%Gas 6.8321.4%Hydro 0.511.6%Biomass 1.916.0%Nuclear 7.2422.7%Coal 0.932.9%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 31.2avgGeneration 29.9avgTransfers 1.4avg
The day in figurespeaks, averages, totals
Peak demand37.5GW · 16:55
Low 21.2 · 04:20Avg 31.20–40 GW
Made in Great Britain96%of demand
Generation 29.9Transfers 1.4 GW
Net imports34GWh
In
39 Out
4
Zero-carbon share68%of generation
Nuclear 24%Hydro 2%Wind 38%Solar 4%

Transfers · Tue 18 Sept

Interconnectors and storage

On Tuesday 18 September 2018, Great Britain imported 39 GWh and exported 4 GWh through its interconnectors. The most came from France (37 GWh), and the most exports went to Ireland (4 GWh).

All interconnectors

Tue 18 Sept
Imported
39GWh
Exported
4GWh
Net in
34GWh
Average net flow
1.43GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.00GWIdle

In 0.0 GWhOut 0.0 GWh

Denmark

Viking Link

Average0.00GWIdle

In 0.0 GWhOut 0.0 GWh

France

IFA · IFA2 · ElecLink

Average1.52GWImporting

In 37.0 GWhOut 0.4 GWh

Ireland

Moyle · East–West · Greenlink

Average0.09GWExporting

In 1.7 GWhOut 3.9 GWh

Netherlands

BritNed

Average0.00GWIdle

In 0.0 GWhOut 0.0 GWh

Norway

North Sea Link

Average0.00GWIdle

In 0.0 GWhOut 0.0 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.08GWPumping

Generated 9.3 GWhPumped 11.2 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.