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Arup-designed foundation for wind turbine installed

holyhead crop(1)

An Arup-designed gravity base foundation has been installed at the Holyhead Deep site.

Located 6km off the coast of Wales, the new gravity foundation base will have a 500kW tidal kite turbine tethered to it. 

Working on behalf of marine energy technology developer Minesto, the Holyhead Deep site was identified as the ideal location because it provides low-flow tidal velocities - 1.5 to 2m/s mean peak flow - at a depth of 80m to 100m. 

Arup worked with Minesto to verify the design using naval architects, structural and marine engineers to ensure the best design was created for the structure.

The gravity base structure was constructed by Jones Bros Civil Engineering in a dry dock and towed out to the site and lowered to the seabed by ballasting its cells with water.

Arup lead designer of offshore structures Gordon Jackson said: ”This constitutes significant progress for Minesto and we are happy we could play a part in helping the UK transition towards a more sustainable energy future by designing the base structure. We utilised skills from across our energy team to deliver a detailed design for Minesto and it’s great to see the design now finalised, built and in place. ”

When the foundation was successfully installed, the bottom joint system that moors Minesto’s DG500 power plant to the foundation was also installed.

Minesto CEO David Collier added: ”We’re happy to be under way and to have the first piece of hardware installed at the site in Holyhead Deep. This is milestone in the DG500 project.” 

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