Deployment plans for the Axial Skelter tidal energy converter are moving forward

Inspired by seashells, the device is made from recyclable materials, can be produced in less than a week and assembled anywhere.

Isbel Lázaro.

Published: December 22, 2024

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A few months ago, Spiralis Energy and Cape Horn Engineering revealed the results of the computational fluid dynamics (CFD) simulation for their Axial Skelter tidal energy converter . After a year of collaboration, the simulations validated on a 1:4 scale testbed, deployed in Poole Harbour, UK, confirm the potential of this innovative technology to transform tidal energy use.

CFD analysis of the Axial Skelter. Source: Cape Horn Engineering

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The power of tidal energy

Inspired by the resilience of nature, the Axial Skelter mimics the shape of the Turritella seashell, giving it exceptional durability to operate in harsh ocean environments. Measuring 16 meters in length and 5 meters in diameter, this tidal energy converter harnesses tidal currents to consistently and reliably generate electricity .

Its modular design, manufactured using 3D printing from recyclable materials, allows the entire system to be produced in less than a week and assembled virtually anywhere.

harnessing tidal energy — The device is designed to operate in harsh ocean environments. Source: Spiralis Energy

This innovative device features only one moving part, simplifying maintenance and reducing operating costs. In addition, the Axial Skelter can be disassembled into modular segments for quick repairs, eliminating the need for specialized and expensive offshore support vessels.

Advantages of the Axial Skelter

It is important to note that the converter has been designed to be environmentally friendly. It has no sharp edges or fast moving parts that can affect marine life, minimising its impact on ocean ecosystems . In addition, its components are made from completely recyclable plastics, promoting a circular economy.

Operationally, this system has an estimated cost of £1 million per unit , including all state-of-the-art structures and equipment.

Spiralis Energy ’s goal is ambitious: to power 11% of the UK’s national electricity grid with tidal energy by 2028. Current trials of the Axial Skelter in the tidal streams of Alderney in the Channel Islands are aimed at fine-tuning its performance ahead of larger-scale commercial deployment. Watch the video below to see how it works.