Lancaster University Research Highlights Viability of Tidal Power as a Sustainable Energy Solution
Published · 3 min read
A groundbreaking study conducted by the School of Engineering at Lancaster University in collaboration with the UK Centre for Ecology and Hydrology has shed new light on the viability of tidal power as a sustainable and reliable energy source. The research, which integrates a tidal range power generation model with a comprehensive cost analysis, presents a compelling case for the adoption of tidal energy on a larger scale.
Professor George Aggidis, the Head of Energy Engineering at Lancaster University, voiced a question that has been on the minds of many: “The obvious question for the UK, with one of the best tidal resources globally, is why haven’t we already got a tidal barrage scheme?”
The study’s findings, published in the journal Energy, underscore the numerous advantages of tidal energy over other forms of renewable energy. Unlike solar or wind power, tidal energy is not subject to unpredictable intermittency, as it generates electricity consistently both day and night.
A key revelation from the research is the potential longevity of tidal barrage systems. The creation of a tidal barrage could provide power for up to 120 years or more, serving as a reliable solution to meet future energy demands and storage challenges.
Professor Aggidis emphasized the urgency of kick-starting the selection and development of tidal energy schemes across Britain. Tidal range generation offers predictable and renewable energy harnessed from the gravitational pull of the moon and sun. Beyond its energy benefits, tidal barrages have the potential to safeguard coastal areas against flooding and rising sea levels. By incorporating two-way generation and pumping mechanisms, these systems can maintain the delicate balance of existing tides, providing protection and support to vulnerable areas such as saltmarshes and mudflats.
“Our studies show that with modern technology and operating procedures, estuarine barrages are the only practical way to protect these vital habitats,” Professor Aggidis explained. He further highlighted the potential economic and environmental advantages, including job creation in construction and manufacturing, improved transportation and communication networks, enhanced conservation efforts, and increased recreational opportunities.
The United Kingdom boasts the second highest tidal range globally, positioning it favorably to tap into the immense potential of tidal energy. In addition to offering energy independence from global price fluctuations, tidal energy presents a long-term solution for clean and affordable power generation.
At present, the commercial consideration of Tidal Range projects offers a feasible 10 GW installed capacity, contributing over 20 terawatt-hours per year, equivalent to approximately 5% of the UK’s total energy consumption. Leveraging the abundant tidal resources available around the UK’s coastline, there exists the potential to expand this installed capacity by four to five times through the development of additional tidal range project sites.
These advancements are indispensable for the UK’s pursuit of carbon emission reduction goals, particularly as a substitute for fossil fuel-powered electricity generation. With a current total generating capacity of approximately 42.8 GW, encompassing fossil fuels (44.9%), renewables (38.5%), and low carbon sources (16.6%), the need for sustainable and cost-effective alternatives becomes increasingly apparent. Notably, the La Rance Tidal Range plant in France currently stands as a testament to the economic viability of tidal energy, generating electricity at a lower cost than nuclear alternatives.
Lancaster University’s innovative research underscores the significant potential of tidal energy to reshape the UK’s energy landscape. With its predictability, longevity, and minimal environmental impact, tidal power could play a pivotal role in the nation’s transition towards a more sustainable and greener energy future. As the world grapples with the imperative of reducing carbon emissions, tidal energy stands out as a beacon of promise on the horizon of renewable energy solutions.
