The HVDC connection supplied by Prysmian shall comprise of ± 300 kV DC subsea and land cable types along around 125 km submarine plus around 75 km land route (around 200 km in total) to the land converter station in Diele, near Papenburg.
Prysmian was awarded a major contract by German transmission system operator transpower, a TenneT subsidiary, as part of a consortium with Siemens Energy for the BorWin2 offshore grid connection. Under this contract Prysmian supplied, installed and commissioned the complete submarine and land cable system. The scope covered ±300 kV extruded HVDC subsea and underground cables along a route of about 125 km offshore and 75 km onshore between the BorWin beta offshore converter platform and the Diele land converter station, and the associated 155 kV HVAC submarine export links from the Veja Mate and Global Tech 1 offshore wind farm transformer platforms to the BorWin beta platform. Submarine cables were manufactured at Prysmian’s Arco Felice plant in Italy and land cables at its Delft plant in the Netherlands, with installation performed using Prysmian’s cable-laying vessel Giulio Verne and other specialised vessels. The system was designed to transmit up to 800 MW of offshore wind power into the German grid, with commissioning targeted around 2013.