Tidal Lagoon Swansea Bay

Swansea Bay Tidal Lagoon would be the largest marine energy development in the world.

The Hendry Review has set the final piece of the jigsaw in place: a watershed moment for British energy, British manufacturing, British productivity and our coastal communities. We look forward to working with Ministers and Officials to bring this new industry to life. A full statement in response to the Hendry Review is attached for your use. 

TLP statement_12th Jan 2017

Developed by Tidal Lagoon Power Limited, it will have an entirely predictable 495GWh output each year of clean, green electricity and will power more than 155,000 homes for 120 years – that’s about 11% of Wales’ domestic electricity. Tidal Lagoon Power plans to follow with five full-scale tidal lagoons in UK waters; generating up to 8% of the UK’s electricity requirements from the fleet.

Tidal Lagoon view1What is a tidal lagoon?

The Swansea Bay lagoon will comprise a UK standard sand-core breakwater or rock bund, similar to many seen in coastal defence schemes and harbour walls. The generating equipment of bulb hydro turbines have been used for many years on run-of-river hydro power schemes as well as some landmark tidal barrages.  The hydro turbines are mounted inside concrete turbine housings and are permanently submerged so the resulting view is of a ring-shaped harbour wall with one section of concrete casing.

As the sea outside the breakwater rises and is held back a difference in water levels is created, known as ‘head’, and once a sufficient head height is reached sluice gates are opened and water flows into the lagoon through turbines to generate electricity.  This process then occurs in reverse, on the ebb tide, as sea levels start to fall and a tidal head is created by holding water back within the lagoon. This way the tides can flow through our turbines four times daily to generate power.


Artist Impression of what Swansea bay Tidal Lagoon will look like

See the lagoon

Tidal Lagoon Swansea Bay  have created a film, 3D model and photomonatge to help us understand how the lagoon will look in Swansea Bay when completed. Visit the www.tidallagoonswanseabay.com website for more information

Tidal Lagoon Arrivalsports