Vattenfall has signed final contracts with Prysmian Powerlink S.r.l. (Prysmian) and B.V. Twentsche Kabelfabriek (TKF) for the manufacturing and supply of the inter-array cable systems that will connect the approximately 140 turbines of the Hollandse Kust Zuid wind farm with two offshore high voltage stations.
The Hollandse Kust Zuid wind farm will consist of four sites. Vattenfall was awarded permits to develop these four sites after winning two separate tender rounds in 2018 and 2019. The selection of inter-array cable suppliers took place through two tendering processes. Netherlands based TKF will supply the inter-array cables for Hollandse Kust Zuid 1 & 2, while Prysmian, headquartered in Italy, will supply the cables for Hollandse Kust Zuid 3 & 4.
Catrin Jung, head of offshore wind Vattenfall: “Hollandse Kust Zuid is a flagship project for Vattenfall and for the Dutch energy transition. We look forward to working with TKF and Prysmian, both highly experienced companies, to make this project a success.”
The contracted scope for TKF includes the manufacturing and delivery of about 150km of 66 kV aluminium core inter-array cables and accessories to be installed in Hollandse Kust Zuid 1 & 2. Manufacturing of the cables will take place in Lochem and Haaksbergen, the Netherlands. Delivery of the cables is expected in 2022.
“We look forward to working together with Vattenfall and are pleased, as a Dutch company, to contribute in this way to the sustainable energy goals in the Netherlands”, says Walter Heerts, Business line Director Subsea at TKF.
For Hollandse Kust Zuid 3 & 4, Prysmian will manufacture and supply about 172 km of 66 kV XLPE-insulated inter-array cables and accessories. Manufacturing will take place in Nordenham, Germany. Delivery is expected in 2022.
“We are proud to support Vattenfall in this important project, providing The Netherlands with CO2-free electricity. Our 66 kV inter-array cables system, compared to 33 kV, can save up to 15% in costs for offshore wind farms, thus supporting the development and growth of the offshore renewable market and its sustainable supply of energy” states Hakan Ozmen, EVP, Projects Business Unit, Prysmian Group.
The Hollandse Kust Zuid wind farm is being developed by Vattenfall as the first subsidy-free wind farm in the Netherlands. It will be fully commissioned in 2023 and will have an installed capacity of approximately 1.5 GW. Once fully operational, the electricity output of Hollandse Kust Zuid will equal the annual consumption of 2-3 million Dutch households.