A new report by the Severn Estuary Commission suggests the creation of a tidal lagoon in the Severn Estuary to generate electricity. The commission has rejected previous proposals for a large barrage and instead advocates for a smaller project that would harness the power of the tide along the England-Wales border. According to the commission, this tidal lagoon demonstration project would not only boost the economy but also provide valuable insights into tidal power.
The UK is facing a significant increase in electricity demand by 2050, making projects like the proposed tidal lagoon crucial for meeting future needs. The Severn Estuary, known for having one of the highest tidal ranges globally, presents a unique opportunity for the UK to leverage tidal energy. Although there have been previous attempts to construct a barrage across the Severn, the lack of government support has hindered these efforts in securing funding.
Environmental groups have strongly opposed the construction of a barrage in the estuary due to its status as a protected wetland of international significance. In contrast, the concept of lagoons, which involve enclosing a bay or coastal area to capture and release water during tides to generate electricity, has gained more favorable reception. The commission believes that a tidal lagoon will offer a viable and environmentally friendly alternative to a barrage while providing valuable engineering experience and environmental monitoring.
One notable example is the proposed Swansea Bay tidal lagoon project, which was rejected by the previous Conservative UK government in 2018 due to concerns about its cost-effectiveness. Moving forward, the commission recommends that the UK and Welsh governments collaborate with the private sector to establish a commercial demonstration project for the tidal lagoon. This initiative would not only showcase the potential of tidal power but also assess its impact on the local environment. Additionally, measures to offset any habitat loss should be considered in the planning and development of the project
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