Jan De Nul and LS to supply high voltage cables for 2 Dutch offshore wind farms

© Jan De Nul

TenneT has awarded a contract to Jan De Nul Group and South Korean LS Cable & System for the high-voltage cables that will connect the offshore wind farms Hollandse Kust (noord) and Hollandse Kust West Alpha to the onshore grid. The project is expected to be completed in 2023.

The consortium was selected from 5 qualified bidders. LS Cable & System will be responsible for the design and manufacturing of the cables. Both wind farms will be connected to the land station near Beverwijk by means of two 220 kV AC cables. The four cables combined have a total length of 210 km.

Jan De Nul is responsible for the transportation, installation and protection of the cables. The marine contractor said it will use its cable layer ‘Isaac Newton’. This vessel is able to transport all cables in one fit to the Netherlands. The multi-purpose support vessel Adhémar de Saint-Venant will execute the post-lay trenching works and the rock protection works at the subsea crossing locations.

The offshore installation work will take place in 2022-2023. Hollandse Kust (noord) will be ready in 2023 followed by Hollandse Kust (west Alpha) in 2024. Both have 700 MW offshore grid connections.