An Important Message Concerning Tidal Lagoon Power
in Swansea Bay, Wales
Swansea Bay Tidal Lagoon will be the world's first tidal lagoon power plant. A tidal lagoon is a 'U' shaped breakwater, built out from the coast which has a bank of hydro turbines in it. Water fills up and empties the man-made lagoon as the tides rise and fall. Electricity is generated on both the incoming and outgoing tides, four times a day, every day.
Due to the incredible tides on the West Coast of Britain, by keeping the turbine gates shut for just three hours, there is already a 4 m height difference in water between the inside and the outside of the lagoon. Power is then generated as the water rushes through 60 m long draft tubes, rotating the 7.2 m diameter hydro turbines.
The project was awarded a Development Consent Order in 2015 and is primed for construction. It will comprise 16 hydro turbines, a 9.5km breakwater wall, generating electricity for 155,000 homes for the next 120 years. Its major delivery partners include Atkins, General Electric, Andritz Hydro, Laing O'Rourke and Alun Griffiths Ltd.
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