Electricity Live

Great Britain’s electricity on Saturday 21 August 2021

On Saturday 21 August, demand averaged 26.8 GW. Renewables supplied 14%.

26.8GW AVERAGEWind2.67 GW10%Hydro0.16 GW1%Biomass1.88 GW7%Solar0.83 GW3%Gas12.35 GW46%Imports4.84 GW18%Nuclear4.27 GW16%26.8GW AVERAGE10%46%18%16%
Price
£117.00/MWh
Day average £117.00
Demand26.8GW
Generation 22.2Transfers 4.6
Fossil fuels46%
Renewables14%
Other41%
Carbon intensityHigh
212g/kWh
0Day average 212300
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Key moments

On Saturday 21 August 2021, gas supplied 46% of Great Britain’s electricity and nuclear 16%. Demand peaked at 31.6 GW at 17:25. Carbon intensity averaged 212 g/kWh and the price £117.00/MWh. Wind generation peaked at 4.6 GW at 00:00. Solar generation peaked at 2.9 GW at 12:00. Carbon intensity was lowest at 03:30 (173 g/kWh) and highest at 20:30 (244 g/kWh). The wholesale price ranged from £80.72/MWh at 02:30 to £143.82/MWh at 12:00. Gas made 56% 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 0.833.1%Wind 2.679.9%Gas 12.3545.7%Hydro 0.160.6%Biomass 1.887.0%Nuclear 4.2715.8%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 26.8avgGeneration 22.2avgTransfers 4.6avg
The day in figurespeaks, averages, totals
Peak demand31.6GW · 17:25
Low 20.5 · 03:55Avg 26.80–40 GW
Made in Great Britain83%of demand
Generation 22.2Transfers 4.6 GW
Net imports109GWh
In
111 Out
2
Zero-carbon share36%of generation
Nuclear 19%Hydro 1%Wind 12%Solar 4%

Transfers · Sat 21 Aug

Interconnectors and storage

On Saturday 21 August 2021, Great Britain imported 111 GWh and exported 2 GWh through its interconnectors. The most came from France (65 GWh), and the most exports went to Ireland (2 GWh).

All interconnectors

Sat 21 Aug
Imported
111GWh
Exported
2GWh
Net in
109GWh
Average net flow
4.56GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.89GWImporting

In 21.4 GWhOut 0.0 GWh

Denmark

Viking Link

Average0.00GWIdle

In 0.0 GWhOut 0.0 GWh

France

IFA · IFA2 · ElecLink

Average2.73GWImporting

In 65.5 GWhOut 0.0 GWh

Ireland

Moyle · East–West · Greenlink

Average0.01GWImporting

In 1.8 GWhOut 1.5 GWh

Netherlands

BritNed

Average0.93GWImporting

In 22.3 GWhOut 0.0 GWh

Norway

North Sea Link

Average0.00GWIdle

In 0.0 GWhOut 0.0 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.05GWGenerating

Generated 5.2 GWhPumped 3.9 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.