The owners of the UK’s 353MW Galloper wind farm, located some 27km off the coast of Suffolk in eastern England, have signed an agreement to sell its transmission assets to Diamond Transmission Partners.

The assets included in the sale comprise the Galloper offshore substation, two subsea export cables, and an onshore substation.

Diamond Transmission Partners, a 50:50 partnership between Mitsubishi Corporation and HICL Infrastructure, was selected in November 2018 as part of energy regulator Ofgem’s tender round 5 of the offshore transmission owners (OFTO) regime.

Ofgem chooses companies to own and run links to the offshore sites over a 20-year period.

The regulator recently questioned whether the system of building point-to-point links between wind farms and shore was viable to support the UK's huge offshore wind ambitions, as it launched a review of the system.

Galloper is owned by Innogy, Siemens Financial Services, Sumitomo Corporation and ESB, and a consortium managed by Green Investment Group and Macquarie Infrastructure and Real Assets. Innogy led the development and construction of Galloper and operates the wind farm on behalf of the project partners.

Galloper, comprising 56 Siemens Gamesa SWT-6.0-154 turbines, boosted to 6.3MW, has been operating at full power since March 2018.

Diamond Transmission Partners last year inked an agreement with Denmark’s Orsted to buy the transmission assets of its 573MW Race Bank offshore wind farm off northeast England.