ELEFSINA, Greece — Nexans has contracted Asso.subsea to transport, install and provide protection for the nearshore section for the 320-kV DC connection of the BorWin cluster development offshore Germany.
This will transmit up to 980 MW of power.
Asso.subsea will participate in the design and execution of what it says is the project’s most challenging scopes, covering very shallow waters. It will also assist Nexans in the execution of the Waddenzee work program, using its shallow-water DP2 cable lay vessel Atalanti, which has a capacity to carry up to 4,500 t of cables that can be distributed in two different carousels.
This allows the vessel to accommodate bundled HVDC cable systems and install these in up to 4 m while in DP mode. And the vessel will be equipped with the jet-sled Hydroplough burial tool to ensure protection of the cable system in compliance with TenneT’s requirements.
Marine operations should take place in 2025.
Elsewhere in Germany’s offshore sector, Asso.subsea has worked on the BorWin3, DolWin3, Veja Mate, Deutsche Bucht, Global Tech 1 and Kaskasi projects and is currently involved in the Gode Wind and Ostwind 3 developments.
Earlier this week, McDermott held a first steel-cutting ceremony at its Jebel Ali fabrication yard in Dubai, United Arab Emirates, to mark the commencement of construction for the BorWin6 HVDC project for TenneT. Through a consortium with Global Energy Interconnection Research Institute Co. Ltd. and C-EPRI Electric Power Engineering Co.,Ltd., McDermott is providing EPCIC services for an HVDC offshore converter platform offshore Germany. Electricity generated from offshore wind farms will be converted into direct current and transported to an onshore converter station located 146 miles (235 km) onshore near Büttel, Germany. Here, the electricity is converted back into three-phase current and fed into the extra-high voltage grid. Fabrication will be executed from McDermott's fabrication yards in Dubai and Batam, Indonesia.