Swansea Bay Tidal Lagoon May Open In 2017

By Rhiannon Mills, Sky News Correspondent

Exploratory work is underway off the coast of south Wales where scientists hope to build the world's first tidal lagoon power station.

As Britain continues to search for more sustainable forms of energy, plans are in place for a 9.5km-long, U-shaped sea wall in Swansea Bay that would harness the strength of the tides.

The £650m project's 26 hydro turbines would be permanently under water, generating energy on both the incoming and outgoing tides.

It is hoped the power station could produce enough electricity to power every home in Swansea, saving over 200,000 tonnes of CO2 and offering predictable zero-carbon electricity for 120 years.

The project is yet to receive planning permission but teams are already drilling to assess the make-up of the seabed.

Alex Herbert, head of planning for Tidal Lagoon Swansea Bay, told Sky News: "We hope this will be the first in a network of lagoons around the British coast which could produce up to 10% of our energy requirements.

The power station's 26 turbines would be permanently underwater

"With the first one happening in Wales, we're on the map and we're producing jobs locally, as well as expertise we can take elsewhere."

Promotional videos describe the power station's potential to help regenerate the area and attract tourists.

The sea wall would be used for walking, running and cycling, while the lagoon itself would be used for watersports.

However some groups have concerns about the environmental and visual impact of the project.

"It's concerning a number of people," Swansea councillor Tony Colburn said. "It's basically going to cut the bay in half and we'll be looking at a very large wall as opposed to the magnificent view we've got."

Sarah Kessell, of the Wildlife Trust, added: "There could be a loss of breeding ground or of spawning areas for fish that birds feed on.

The 9.5km-long sea wall would be used by walkers and cyclists

"We don't know what the long-term impact will be ... but there are certainly opportunities for mitigation along the way."

A planning application will be submitted later this year with a decision expected in early 2015.

If the development is approved it could be open by 2017, with similar schemes possible in Colwyn Bay, north Wales, and in locations near Liverpool.

Canada, France and South Korea already have tidal power plants but the one planned for Swansea would be the first to utilise both the incoming and outgoing tides.

The bay is considered an ideal location for the project because of its shallow water and 10-metre tidal range - the second highest in the world.

"It's a fantastic proposal because it diversifies how we produce energy," Barry Stewart, a local wildlife enthusiast, said.

"Obviously a project of this scale is always going to have an adverse effect on some ecological features. The wildlife can be accommodated but time will tell."

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