Bay lagoon plans could meet city's electricity needs
NEW tidal lagoon proposals for Swansea Bay have been set out.
Tidal Lagoon Swansea Bay said its development could meet the city's domestic electricity needs.
The company has been speaking to local groups and has submitted a 116-page report to the UK's planning inspectorate, which the public can view online.
It is still very early days, but the company said the lagoon, situated off Swansea docks, could "supply well over 100,000 homes, or the equivalent to Swansea city's domestic electricity use".
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The lagoon would hold back water and then release it through turbines to generate electricity. This would happen at low tide, with water flowing from the lagoon into the sea, and at high tide, with water flowing the other way.
The lagoon would cost hundreds of millions of pounds, take some two years to build, and enclose an area of just over 9km².
The potential effect of the structure on the environment and on groups which use Swansea Bay will be examined at a later date by an environmental impact assessment.
The report said: "Of particular note is the presence of the main outfall for the Swansea Waste Water Treatment Works which would discharge its effluent into the proposed lagoon."
Discussions about this issue will take place with Welsh Water and the Environment Agency.
Approximately the top three metres of the landward lagoon seawall would be visible from shore at high tide, increasing to around 12 metres at low tide.
"With respect to the potential visual impact, the generally low nature of the lagoon structure means that the potential distance affected will be significantly reduced compared to, for instance, offshore wind turbines," said the report.