Electricity Live

Great Britain’s electricity on Wednesday 12 September 2018

On Wednesday 12 September, demand averaged 31.9 GW. Renewables supplied 25%.

31.9GW AVERAGEWind6.38 GW20%Hydro0.47 GW1%Biomass2.45 GW7%Solar1.23 GW4%Gas10.99 GW34%Coal2.10 GW6%Imports1.76 GW5%Nuclear7.26 GW22%31.9GW AVERAGE20%7%34%22%
Price
£68.17/MWh
Day average £68.17
Demand31.9GW
Generation 30.9Transfers 1.0
Fossil fuels34%
Renewables25%
Other35%
Carbon intensityHigh
243g/kWh
0Day average 243300
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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 Wednesday 12 September 2018, gas supplied 34% of Great Britain’s electricity and nuclear 22%. Demand peaked at 37.7 GW at 16:55. Carbon intensity averaged 243 g/kWh and the price £68.17/MWh. Wind generation peaked at 8.4 GW at 00:00. Solar generation peaked at 4.1 GW at 13:30. Carbon intensity was lowest at 00:30 (142 g/kWh) and highest at 18:00 (306 g/kWh). The wholesale price ranged from £49.86/MWh at 04:30 to £92.13/MWh at 20:00. Gas made 36% of the electricity generated in Great Britain, compared with 42% across 2018.

Charts

Generation, demand, price and carbon

Generation by sourceGW · daily average below
Solar 1.233.8%Wind 6.3819.5%Gas 10.9933.7%Hydro 0.471.4%Biomass 2.457.5%Nuclear 7.2622.2%Coal 2.106.4%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 31.9avgGeneration 30.9avgTransfers 1.0avg
The day in figurespeaks, averages, totals
Peak demand37.7GW · 16:55
Low 21.8 · 03:50Avg 31.90–40 GW
Made in Great Britain97%of demand
Generation 30.9Transfers 1.0 GW
Net imports20GWh
In
35 Out
15
Zero-carbon share50%of generation
Nuclear 24%Hydro 2%Wind 21%Solar 4%

Transfers · Wed 12 Sept

Interconnectors and storage

On Wednesday 12 September 2018, Great Britain imported 35 GWh and exported 15 GWh through its interconnectors. The most came from France (21 GWh), and the most exports went to Ireland (11 GWh).

All interconnectors

Wed 12 Sept
Imported
35GWh
Exported
15GWh
Net in
20GWh
Average net flow
0.82GW 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

Average0.86GWImporting

In 20.7 GWhOut 0.0 GWh

Ireland

Moyle · East–West · Greenlink

Average0.39GWExporting

In 1.8 GWhOut 11.1 GWh

Netherlands

BritNed

Average0.34GWImporting

In 12.3 GWhOut 4.1 GWh

Norway

North Sea Link

Average0.00GWIdle

In 0.0 GWhOut 0.0 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.15GWGenerating

Generated 7.4 GWhPumped 3.7 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.