LDA Design masterplan for world's first purpose-built tidal lagoon revealed

Consultation has started on LDA Design's masterplan for the world's first purpose-built electricity generating tidal lagoon.

The lagoon proposed for Swansea Bay will have a rated capacity of 240 megawatts generating 400 gigawatts per hour net annual output - enough electricity to power around 121,000 homes over a year - more than are in Swansea itself.

LDA is both masterplanner and landscape architect for the £650m development.

As well as generating electricity, the project includes visitor facilities and other amenities including art, education, mariculture and recreational facilities.

The 9.5km-long u-shaped seawall is expected to be open to the public during daylight hours for walking, running and cycling, although access will be controlled in extreme weather.

LDA partner Alister Kratt said: "The formal consultation process forms an important part of the Development Consent Order (DCO) application and provides a clear explanation of a project that we are proud to be associated with.

"As the project develops, the opportunities that the masterplan provides should secure significant benefits for Swansea, including the completion of an attractive marine park which extends into the bay."

To help sell the plan to Swansea Bay residents an interactive 3D computer programme of the design has been developed by iCreate in collaboration LDA Design and the project marine engineers, Atkins. It can also be seen here

The lagoon generates electricity by preventing water from entering the lagoon for an average of two hours on the flood and ebb tides, creating a difference in water levels called 'head'. Once enough head has built up the water is let into the lagoon through up to 22 hydro turbines which generate the electricity through propellor-type devices called runners.

As the project is an offshore electricity generating station of more than 100MW it is considered to be a Nationally Significant Infrastructure Project under the Planning Act 2008 and therefore requires the Secretary of State for Energy and Climate Change to grant a DCO.

It also requires a marine license and may also require planning permission from local councils.


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