Prysmian will provide complete supply, installation and commissioning of the submarine and land cable connections as part of a larger contract worth approximately a half billion, awarded to the consortium of Prysmian and Siemens Energy.

Siemens will deliver the voltage sourced converter (VSC) system, with a rating of 576MW. The turnkey connection will first link the Offshore Wind Park Nord See Ost, located about 85km offshore, to the mainland with the purpose of transmitting wind generated renewable power into the German grid.

The project follows the recently awarded BorWin2 project, worth more than EUR200m, which will be a commercial ± 300kV DC cable project. The HelWin1 project will use extruded HVDC cable technology from Prysmian together with Siemens HVDC Plus converter technology at the offshore platform and onshore stations.

The cables and accessories will be manufactured from 2011 onwards in Prysmian’s European HV factories including the submarine cable facility in Arco Felice, Italy. Installation activities will commence in 2011 and continue throughout 2012. The commencement of operation of the HVDC link is planned for 2013.