Hinkley Point C plans to create new saltmarsh instead of fish deterrent system

Plans to create more than 800 acres of saltmarsh alongside the River Parrett have been unveiled by Hinkley Point C.

The proposed saltmarsh at Pawlett Hams would create new habitat for fish and animals, improve local water quality and help prevent flooding, says EDF Energy, which adds that it will replace a proposal to install an acoustic fish deterrent system.

EDF says it is one of a number of proposed measures that aim to help wildlife and the environment around the Severn estuary, including planting of seagrass and kelp, developing native oyster beds, and removing weirs on three rivers to help migrating fish reach their breeding grounds.

The plans are being developed with Natural England, Natural Resources Wales and the Environment Agency as a natural alternative to installing an acoustic fish deterrent.  The deterrent had been proposed to keep some fish species away from the power station’s cooling water system. 

Environmental campaigners fear millions of fish could be killed every day by the Hinkley Point C nuclear power station if EDF does not install an acoustic fish deterrent.

EDF says creating the new saltmarsh is “a proven way to increase and protect biodiversity. It will help fish by providing breeding grounds and provide food and shelter for birds and animals. Tidal marsh also filters and cleans water, prevents floods and locks away carbon in one of our most effective weapons in the fight against climate change.”

Steart Marshes, opposite the proposed new wetland, was created nine years ago and is now alive with birds, fish and wildlife, and is a popular place for recreation.

An EDF spokesperson says: “The creation of new habitat to help protect fish populations replaces a proposal to install an acoustic fish deterrent system. This system would use 280 speakers to make noise louder than a jumbo jet 24-hours a day for 60 years. Its impact on porpoises, seals, whales, and other species is unknown.”

“Independent studies showed it would offer a very small potential benefit to protected fish species. It would also risk the safety of divers in the fast-flowing tides of the Bristol Channel. ”

Chris Fayers, Head of Environment at Hinkley Point C, adds: “The new wetland would be a fantastic place for wildlife and a beautiful place to visit. Using natural and proven ways to improve the environment is better than creating sixty years of noise pollution with a system that is untested far offshore in the fast-flowing waters of the Severn.”

“Hinkley Point C is one of Britain’s biggest acts in the fight against climate change and its operation will provide significant benefits for the environment.”

Burnham Boat Owners Sea Angling Association has spoken out against removing acoustic fish deterrents to Hinkley Point’s water intakes in the Bristol Channel, saying the removal would “seal the fate of an enormous amount of marine life.”

EDF’s proposals for habitat creation and other changes to Hinkley Point C’s design, such as alterations to the way the power station will store spent fuel, will be included in a public consultation launching on 9th January. More information on the consultation events will be available on the Hinkley Point C website.

Pictured: The proposed new saltmarsh could be located near an existing site at Steart Marshes at Pawlett Hams