The city government of Liverpool is considering a project to build a tidal barrage across the River Mersey, along with a tidal power station with a total capacity of 700 MW.
The plan to construct a barrage across the River Mersey in Liverpool is taking shape. If everything goes according to plan, this project will become the largest tidal power generation facility in the world, while also providing a safe pathway for pedestrians and cyclists across the river, New Atlas reported on March 12.
Design of the barrage across the River Mersey. (Photo: Liverpool City Management Department)
The idea for the construction was first proposed by Liverpool authorities in 1924, followed by reports and feasibility studies in the 1980s. The Liverpool City Management Department has been exploring the technical specifications of several projects on the River Mersey over the past three years. Politician John McDonnell confirmed that they have chosen the proposal to build a barrage between Liverpool and the Wirral metropolitan area during the planning phase.
Not only will this be the first pathway dedicated to pedestrians and cyclists connecting the two riverside areas, but the new structure will also house 28 turbines powered by the flow of the River Mersey, generating electricity from the potential energy available from tidal height differences, which can rise up to 10 meters in Liverpool. The total expected capacity is 700 MW, making the facility the largest tidal power station in the world. The design also includes sluice gates to allow water to flow through when necessary, helping to mitigate the increased flood risk caused by climate change. The project will also feature a lock to maintain river traffic.
The city authorities have yet to decide on the exact location of the barrage as previous options are no longer viable. They are seeking a site closer to the river mouth. If approved this week, the multi-billion-dollar project will be sent to the government inspector by the end of the year to determine the environmental impact assessment needed for the construction.
