A group of Dutch companies are looking into the possibility of building 'energy islands' in the North Sea.
KEMA and the Lievense bureau are working with the Das Brothers on the concept of creating areas capable of large-scale electricity storage with a 'subsurface-lake' power station.
It is believed the man-made islands will be able to generate enough power to supply two million Dutch homes by 2020.
"The energy island is an innovative concept that can be attractive in the medium and long term for the Dutch electricity supplies," KEMA says.
It added: "Storage increases the technical reliability of energy supplies, stabilises the cost price of electricity and contributes to the reduction of CO2 emissions."
Other environmental advantages to electricity storage, according to the company, are that power stations need to be taken offline less often or can be run at a lower capacity.
Egmond aan Zee Offshore Wind Farm was the first Netherlands wind farm to be built in the North Sea.
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