Amprion Offshore has awarded Siemens Energy Global and Dragados Offshore to build the converter stations for the DolWin4 and BorWin4 offshore grid connection systems.
The partners are to build two converters each at sea and onshore. The award also includes maintenance for ten years. The converter stations are necessary to convert alternating current into direct current and vice versa. DolWin4 and BorWin4 are scheduled to go into operation in 2028 and 2029. From the North Sea wind farms, the cables will initially run 60 and 125 kilometers at sea. They cross below the island of Norderney and reach the coast in the Hilgenriedersiel. From there, they run for around 155 kilometers as underground cables toward the Hanekenfähr substation in Lingen (Ems), where Amprion will connect them to its transmission network. There, the Emsland nuclear power plant will be taken off the grid at the end of 2022. The generation capacity will be replaced by 1.8GW of offshore wind energy via DolWin4 and BorWin4.
