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QED Naval Limited and Tocardo Turbines

A low-cost submersible platform for tidal sites

June 2020
Gallery QED Naval Limited and Tocardo Turbines 1
Gallery QED Naval Limited and Tocardo Turbines 1


The Subhub Tidal platform overcomes the high cost of installation and maintenance of tidal turbines, providing quick and reliable access to turbines and electrical infrastructure.

Subhub Tidal Platform is a submersible, gravity-based foundation used to support an array of tidal turbines through life. It integrates the whole tidal energy plant at the quayside, where everything is commissioned and tested in a safe, accessible environment. Subhub is then used as a transportation barge to deploy tidal equipment straight to site using commonly available, low cost, harbour tugs etc. In a single offshore operation the Subhub, along with turbines, is installed in a quick and easy ballasting process, using its unique submerged stability characteristics to install itself on the seabed. It then de-ballasts further to adopt its required operating condition. The hydrodynamically designed hull form accelerates flows to tidal turbines, to extract on average 47% more energy from sites. Maintenance and decommissioning is a simple case of deballasting Subhub to bring it back to the surface.

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Label Date June 15, 2020
From United Kingdom
Maturity stage Prototype testing in the real world

The environmental benefits

  • QED's Subhub tidal platform and turbines do not emit any CO2 during their useful lifetime
  • QED's industrial scale device (8m diameter turbines) is capable of generating 1359MWh per year
  • QED's industrial scale device is capable of offsetting 658 tons of CO2 / year from grid

The Financial benefits

  • Operations cost savings of 60%
  • Yield savings to sites, turbines and financial performance of 48% on average

Activity Region

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  • Headquarters
  • Activity

Company Profile

QED Naval Limited

QED Naval Ltd is a marine energy business specialising in marine renewable energy projects, platforms and turbines.

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Headquarters Castle St, Edinburgh EH2 3AH, UK
Contact the Solution Provider Add to Favorites

The information set out above, is solely for the purposes of information and the Solar Impulse Foundation does not provide any guarantee as to its authenticity, completeness or accuracy. This information does not constitute investment advice or a recommendation to buy into, transact or to enter into any agreement with any of the parties or persons mentioned above. Potential investors or interested parties are solely responsible for their investment or business decisions and for performing any due diligence required by the circumstances. The innovator QED Naval Limited has asserted ownership of the intellectual property rights for images, videos, and content showcased above, affirming full and unrestricted usage rights, and has provided explicit permission for the Solar Impulse Foundation to publish such information designated as "public" in the application form.