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Major pumped storage hydro scheme planned for Isle of Lewis

 
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Mark



Joined: 13 Dec 2007
Posts: 882
Location: NW England

PostPosted: Thu Aug 25, 2016 9:42 am    Post subject: Major pumped storage hydro scheme planned for Isle of Lewis Reply with quote

Plans have been unveiled for an innovative 200M water engineering project on the Isle of Lewis that will deliver a significant boost to energy production in Scotland:
Pumped Storage Hydro Scheme


The large pumped storage hydro (PSH) scheme on the Outer Hebrides island will be capable of generating 300MW of electricity enough to power more than 200,000 homes. The scheme, being developed by Eishken Ltd, will store electricity generated by windfarms on Lewis and increase significantly (from 40% to 80%) the use of the Western Isles Link, the cable being installed by the National Grid to export and import electricity generated from renewable energy sources on the islands. The proposed scheme will be adjacent to and form part of the already consented 162MW Muaitheabhal Wind Farm on the Isle of Lewis. It will permit part of the output of the wind farm to be stored until required allowing it to balance the sometime intermittent nature of wind.

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adam2
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Joined: 02 Jul 2007
Posts: 6206
Location: North Somerset

PostPosted: Thu Aug 25, 2016 12:11 pm    Post subject: Reply with quote

Interesting, thanks for the link.

Sounds an excellent idea, although the capacity is small if compared to the national demand, it would still be a most useful addition.

Renewables alone are not under present circumstances the complete answer due to inherent variability. Schemes such as this allow a greater proportion of electricity to be renewably generated.

Use of the sea as the lower reservoir is indeed unusual.

300MW is less than 1% of our peak demand, not that much but still a useful step in the right direction.

Hopefully it will actually be built, and not just discussed.
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