Tidal range power plants hold potential for electricity generation

May 22, 2018, Bangor University
Credit: CC0 Public Domain

In theory, one third of global electricity needs could be provided by the world's tidal range, according to a new comprehensive state-of-the-art review of tidal range power plants.

The estimates that 5792 TWh could be produced by tidal range plants—using tidal lagoons and barrages to convert from the highly predictable rise and fall of the world's oceans. However, 90 percent of the resource is distributed across just 5 countries, with both the UK and France having a significant share of that resource.

Researchers at the School of Ocean Sciences, Bangor University have published the review of tidal range energy resource and optimization in Renewable Energy, an international peer-reviewed journal. The review also discusses how tidal power plants can be optimized, through detailed modelling, and via optimizing the mode of operation of multiple tidal lagoons located along a coastline, using a blend of flood only, ebb only, and two-way generation plants.

Lead author Dr. Simon Neill explains, "Tidal lagoons are attracting national and international attention, with the 2017 publication of the government commissioned "Hendry Review", which assessed the economic case for plants, and suggested that a "Pathfinder" project in Swansea Bay could be the start of a global industry. Geographically, the UK is in an ideal position, containing many regions of large tidal range as a result of the resonant characteristics of this part of the European shelf seas."

However, Dr. Sophie Ward, another author of the study, cautioned "although tidal lagoons will likely be less intrusive than tidal barrages (which tend to span entire estuaries), they require careful design and planning to minimize the impact on the local environment. With significant global potential for tidal range power , we need to closely monitor environmental consequences of extracting energy from the tides, and be cautious of altering natural habitats by building structures and impounding water in lagoons or behind barrages."

Explore further: Envisioning Swansea energy plant powered by tides in lagoon

More information: Simon P. Neill et al. Tidal range energy resource and optimization – Past perspectives and future challenges, Renewable Energy (2018). DOI: 10.1016/j.renene.2018.05.007

Related Stories

Envisioning Swansea energy plant powered by tides in lagoon

February 9, 2014

(Phys.org) —What about building five "tidal energy" plants in the UK, as a source of clean and reliable energy? Can such a resource be harnessed in a way that makes economic, environmental and social sense? That is the ...

Mersey River tidal power station proposed

November 22, 2005

The Mersey River may soon become the first river in Britain to generate electricity by tidal activity. The river, known for its leaping salmon, is now being tested as a possible renewable energy source.

Teaming up for cheaper energy from ocean tides

April 25, 2017

Oceanographers at Bangor University's School of Ocean Sciences are launching a major project to study tidal turbulence at the Menai Strait in Wales. Just how can this project help reduce development costs, leading to cheaper ...

Recommended for you

After a reset, Сuriosity is operating normally

February 23, 2019

NASA's Curiosity rover is busy making new discoveries on Mars. The rover has been climbing Mount Sharp since 2014 and recently reached a clay region that may offer new clues about the ancient Martian environment's potential ...

Study: With Twitter, race of the messenger matters

February 23, 2019

When NFL player Colin Kaepernick took a knee during the national anthem to protest police brutality and racial injustice, the ensuing debate took traditional and social media by storm. University of Kansas researchers have ...

Solving the jet/cocoon riddle of a gravitational wave event

February 22, 2019

An international research team including astronomers from the Max Planck Institute for Radio Astronomy in Bonn, Germany, has combined radio telescopes from five continents to prove the existence of a narrow stream of material, ...


Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.