The transmission system operator for northern/eastern Germany has awarded a contract to design and install a 270-km export cable to connect the Arcadis Ost 1 and Baltic Eagle offshore windfarms to an onshore substation in Lubmin.
The contract was awarded to a joint venture of Royal Boskalis Westminster and cable manufacturer NKT. The value of the contract for Boskalis is in excess of €250M (US$283M), making it the largest cable installation contract acquired by Boskalis.
The contract is also a record breaker for NKT. At €300M it is the largest the company has booked for an AC high-voltage export cable.
The project is expected to commence in 2019 with planned completion late 2022. Boskalis will deliver an integrated solution of inhouse services including supporting UXO survey, geotechnical and geophysical surveys (through its subsidiary Gardline), seabed preparation works, prelay run, transporting and installing the 220-kV export cables and seabed reinstatement. The company will deploy inhouse assets including trailing suction hopper and backhoe dredgers, geophysical and geotechnical survey vessels, cable-laying vessels and a wide range of trenching tools.
NKT’s part of the deal includes supplying the 220-kV high-voltage AC XLPE cables and approximately 8 km of 220-kV high-voltage AC XLPE onshore cables. The export cable for Ostwind 2 will be manufactured in Karlskrona, Sweden and in Cologne, Germany, with production to start early 2020.