Swansea set for world’s first tidal lagoon power plant

Swansea Bay’s Tidal Lagoon, which was awarded a Development Consent Order in 2015, is primed for construction - and will become the world’s first tidal lagoon power plant.

A ‘U’ shaped breakwater comprising of 16 hydro turbines and a six-mile breakwater wall, the power plant will produce electricity for over 150,000 homes in the next 120 years.

To achieve this, water that flows into and out of the tidal lagoon - which is built out from the coast - will fill up and empty the lagoon as the tide rises and falls. This means that electricity will be generated on both the incoming and outgoing tides, four times each day.

Keeping the turbine gates closed for three hours creates a 14ft height difference in water between the inside and outside of the lagoon. As the water flows through the 200ft-long draft tubes, rotating the 23ft-diameter hydro turbines, power is generated.

Work is due to start on the project next year, and construction on the entire project is expected to last four years. The first power will be generated in year three of the scheme.

Around 2,232 construction and manufacturing jobs will be directly sustained by the build, according to independent reports - supporting thousands of further jobs in the wider Welsh/UK economy.

Since 2014, the independent Tidal Lagoon Industry Advisory Group has been working working to ensure that industry in Wales and the UK is ready to take pole position in the tidal lagoon sector.

British-made turbine and generator technology and engineering expertise will be at the centre of the Swansea Bay Tidal Lagoon, seeding a new worldwide industry with considerable export potential for manufacturers in the UK.