Tidal energy developers Sabella, Magallanes and HydroQuest plan to deploy their technologies at the Morlais project off the coast of Anglesey in North Wales.
The first stage of Morlais, which is run by social enterprise Menter Mon, aims to secure consent for the development of the zone.
The second stage will put the necessary infrastructure in place so that developers, including the three new partners can implement devices at the site.
French company Sabella has already connected the D10-1000 turbine (pictured) to the French grid and, with the 1MW technology successfully demonstrated during sea trials since 2015, the company is targeting marine applications for remote grids with its range of modular products.
Sabella commercial director Jean-Christophe Allo said: “We have been following Menter Mon’s work on the Morlais project since 2016 and are delighted now to be part of this ambitious project as a developer.
“We look forward to collaborating with colleagues at Morlais and other stakeholders for the future success of marine energy in Wales.
“Anglesey’s waters have a great deal of tidal resource and Morlais will enable us to commercially deploy a pilot tidal array, a crucial step toward the development of the tidal industry.”