For the connection of the offshore wind farm Borkum Riffgrund 1 with the offshore converter platform DolWin alpha via two parallel 155 kV AC submarine cable systems, Norddeutsche Seekabelwerke GmbH (NSW) has been awarded on November 8, 2011 by TenneT TSO GmbH (TenneT) the order for the supply and installation of 26 kilometers 155 kV AC submarine power cable systems.
DolWin alpha is located in approximately 75 km distance to the German Coast and is the offshore converter station for the grid connection project DolWin1. The offshore wind farm Borkum Riffgrund 1 will be connected to this converter station. From there, a high voltage DC transmission of 800 MW will transport the energy generated from several offshore wind farms to the supergrid in Dörpen, located 165 km away.