Electricity Live

Great Britain’s electricity on Friday 17 September 2021

On Friday 17 September, demand averaged 29.4 GW. Renewables supplied 24%.

29.4GW AVERAGEWind5.40 GW18%Hydro0.13 GW0%Biomass1.69 GW6%Solar1.54 GW5%Gas13.22 GW44%Coal0.42 GW1%Imports2.84 GW9%Nuclear4.83 GW16%29.4GW AVERAGE18%44%9%16%
Price
£137.72/MWh
Day average £137.72
Demand29.4GW
Generation 27.2Transfers 2.2
Fossil fuels44%
Renewables24%
Other31%
Carbon intensityModerate
212g/kWh
0Day average 212300
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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 Friday 17 September 2021, gas supplied 44% of Great Britain’s electricity and wind 18%. Demand peaked at 36.1 GW at 11:05. Carbon intensity averaged 212 g/kWh and the price £137.72/MWh. Wind generation peaked at 7.5 GW at 11:05. Solar generation peaked at 5.3 GW at 12:30. Carbon intensity was lowest at 02:00 (166 g/kWh) and highest at 21:00 (272 g/kWh). The wholesale price ranged from £106.62/MWh at 00:00 to £208.93/MWh at 21:00. Gas made 49% of the electricity generated in Great Britain, compared with 42% across 2021.

Charts

Generation, demand, price and carbon

Generation by sourceGW · daily average below
Solar 1.545.1%Wind 5.4018.0%Gas 13.2243.9%Hydro 0.130.4%Biomass 1.695.6%Nuclear 4.8316.1%Coal 0.421.4%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 29.4avgGeneration 27.2avgTransfers 2.2avg
The day in figurespeaks, averages, totals
Peak demand36.1GW · 11:05
Low 20.9 · 03:25Avg 29.40–40 GW
Made in Great Britain92%of demand
Generation 27.2Transfers 2.2 GW
Net imports55GWh
In
65 Out
9
Zero-carbon share44%of generation
Nuclear 18%Hydro 0%Wind 20%Solar 6%

Transfers · Fri 17 Sept

Interconnectors and storage

On Friday 17 September 2021, Great Britain imported 65 GWh and exported 9 GWh through its interconnectors. The most came from Belgium (18 GWh), and the most exports went to Ireland (8 GWh).

All interconnectors

Fri 17 Sept
Imported
65GWh
Exported
9GWh
Net in
55GWh
Average net flow
2.30GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.73GWImporting

In 18.2 GWhOut 0.7 GWh

Denmark

Viking Link

Average0.00GWIdle

In 0.0 GWhOut 0.0 GWh

France

IFA · IFA2 · ElecLink

Average0.73GWImporting

In 17.6 GWhOut 0.1 GWh

Ireland

Moyle · East–West · Greenlink

Average0.22GWExporting

In 2.6 GWhOut 7.8 GWh

Netherlands

BritNed

Average0.64GWImporting

In 16.1 GWhOut 0.8 GWh

Norway

North Sea Link

Average0.42GWImporting

In 10.2 GWhOut 0.0 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.08GWPumping

Generated 3.6 GWhPumped 5.5 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.