900MW subsea transmission completed off German coast

Prysmian Group has commissioned the High Voltage Direct Current (HVDC) offshore grid connection project DolWin3 off the German North Sea coast.

Prysmian had secured this project in February 2013, with a contract awarded by Alstom Grid (now GE Grid GmbH) on behalf of the Dutch-German grid operator TenneT.

DolWin3, the third offshore grid connection in the ‘DolWin’ cluster, links the offshore converter platform DolWin Gamma, located approximately 85 km offshore in the North Sea, to the German mainland with the purpose of transmitting clean and renewable energy into the national grid.

Prysmian was responsible for the supply, installation and commissioning of the High Voltage Direct Current (HVDC) ± 320 kV extruded submarine and land power cable connections with a rating of 900 MW and the associated fibre optic cable system, covering a 78 km land route and an 83 km subsea route.

The cables were produced at the Prysmian Group's centres of technological and manufacturing excellence in Arco Felice (Italy), Pikkala (Finland) and Delft (The Netherlands).

The completion and handover of this important project further confirm the Group’s ongoing successful relationship with TenneT, which in recent years has awarded a total of seven HVDC grid connection projects to Prysmian, including BorWin2 & BorWin3, HelWin1 & HelWin2, SylWin1 and the recently awarded DolWin5.