Swedish offshore wind pioneer Hexicon is buying the long-dormant Wave Hub energy test site in the Celtic Sea off southwest England to trial its next-generation twin-headed floating design in a full 30-40MW array.

The acquisition from the local authority, the value of which was not disclosed, will see the company’s subsidiary TwinHub take over the site, a power ‘socket’ built off Cornwall in 2014 to trial wave power devices but never used.