Tidal Stream Energy

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Reliable, Predictable, Sustainable  Tidal stream energy (TSE) is the only 100% regular, predictable and sustainable energy source on the planet. So why is it that this immense, inexhaustible resource, currently plays no meaningful role in the race towards a world powered by carbon free energy? 

 

Tidal Stream Energy Today  Until now, TSE developers have mostly focused on horizontal axis turbines (HATs), targeting limited remote areas with the strongest tidal streams (max. above 2.5 m/s or 5 Knots). HATs can be described as submerged horizontal axis wind turbines and whilst small numbers have been deployed, the costs of installing and maintaining submerged machinery of this type are still too high, meaning none have achieved commercial scale.

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Potential for TSE   It is widely quoted that TSE resources around the UK alone could provide up to 11% of the UK's electricity needs and yet today, no technology can deliver that result.​

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Rethinking Tidal Stream Energy ​ TT2 is a complete rethink. It’s innovative design, using vertical axis turbines (VATs)on a concrete, surface piercing, gravity base, unlocks sizeable new potential for TSE by solving the problems that have challenged the industry to date.

 

TT2;

• is cost effective in large areas with medium energy tides (E.G. The English Channel)

• unlocks viable gigawatt scale potential, close to demand.

• incorporates a robust seabed gravity base with no additional anchoring or piling

• has all generators and electrical components, protected and easily serviceable above the waves.

• uses "off the shelf" wind turbine style drive trains.

• has NO moving parts requiring regular servicing below water.

• requires NO raising from the seabed during its lifetime.

• has minimal environmental impact.

• poses no discernible risk to sea life.

• is installed by float out and sink technology without large vessels.

• addresses all navigational risks.​

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Proven Concept   In April 2022 we successfully tested a 1/20th scale model in the Royal Navy's testing facilities in Gosport, Hampshire. Since then we have completed 3 years of further detailed design work including structural computation and extensive CFD modelling indicating that the concept is highly effective, buildable and can deliver cost effective energy at scale, close to where the demand is greatest.

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Next Steps   We are now planning the build of our first full scale demonstrator for deployment at the Morlais tidal energy demonstration zone off Anglesey, N. Wales in 2026.

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To see the test, please view our video.

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