Netherlands-based Heerema Fabrication Group (HFG) says it has secured a contract for the engineering, procurement, construction and installation (EPCI) of a high-voltage direct-current (HVDC) offshore wind platform for Siemens on behalf of grid operator TenneT.
The contract consists of an offshore platform that will be equipped with Siemens' HVDC technology, allowing a low-loss transmission of wind power generated in the German North Sea, HFG explains.
The HelWin2 platform will be located close to Heligoland, 85 km northwest of the HVDC cable's landing point in Busum, Germany, in water depths of 24 meters. The HelWin2 offshore HVDC platform will be the third offshore grid connection in the eastern North Sea built by HFG. The HelWin2 offshore converter station will have a transmission capacity of 690 MW.
The topsides will be built at HFG's Zwijndrecht yard, and the jacket and bridge will be built at the Vlissingen yard in the Netherlands. Fabrication will start in November and is scheduled for completion in mid-2014.
Installation by HFG's sister company, Heerema Marine Contractors, is planned for the third quarter of 2014, and the grid connection is scheduled to be operational by spring 2015.