David Vandercruyssen, a postgraduate researcher at the university, explains that tidal range schemes allow for the control of high tides through the simple mechanism of closing sluices and turbines. Additionally, the maintenance of existing low tide levels can be achieved by employing pumping techniques. This approach presents a robust solution to the growing threat of coastal flooding exacerbated by climate change.
Professor George Aggidis, Head of Energy Engineering at Lancaster University, sheds light on the hesitancy surrounding the development of estuarine barrages. He notes that misconceptions about their operation and concerns over potential disturbances to ecologically sensitive intertidal areas have previously hindered progress. However, Aggidis asserts that with advancements in modern technology and refined operating procedures, estuarine barrages stand as the only practical way to protect these vital habitats.
The research follows earlier studies by Lancaster University, which demonstrated the viability of tidal range energy in the UK, including a combined tidal range electricity generation and cost model. This model showed the feasibility of maintaining full tidal range within existing dams or weirs.
Professor Aggidis also points out that Great Britain, possessing the second-largest tidal range in the world, has been considering major barrages since the Victorian era. He highlights the success of large-scale tidal range schemes such as La Rance in France and Lake Sihwa in South Korea. These projects have been generating substantial amounts of sustainable electricity at a reduced cost, underscoring the practicality and benefits of tidal range energy.
The Lancaster research team envisions a future where coastal lagoons, proposed for several locations around Britain's coast, will not only provide renewable energy but also create opportunities for construction, manufacturing, transport, communication, conservation, and recreation. These schemes are anticipated to offer employment for generations while contributing to long-term reliable power generation.
This novel approach to integrating renewable energy generation with coastal protection strategies highlights the importance of adapting to climate change impacts while pursuing sustainable energy solutions. As sea levels continue to rise, the urgency for such innovative and practical solutions becomes ever more pressing, positioning tidal range schemes at the forefront of this dual challenge.
Research Report:Tidal range electricity generation into the twenty-second century
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