Tidal Power: Swansea Bay

Department for Business, Energy and Industrial Strategy written question – answered on 6th February 2017.

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Photo of Lord Stoddart of Swindon Lord Stoddart of Swindon Independent Labour

To ask Her Majesty’s Government what volume of electricity a Swansea tidal lagoon would produce per annum and at what cost per MWh; and what would be its contribution towards security of supply during the morning and evening peak demand periods.

Photo of Lord Prior of Brampton Lord Prior of Brampton Parliamentary Under-Secretary (Department for Business, Energy and Industrial Strategy)

If built, the tidal lagoon at Swansea Bay is anticipated to generate approximately 0.5 TWh/year. The levelised cost of the project (in MWh) would depend on a number of factors including the capital costs, operating costs, operating profile, load factor and financing rates. For reasons of commercial sensitivity I cannot comment on the specifics of the developer’s latest proposal. Its contribution to security of supply would be subject to a number of factors including the state of the tides.

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