Vattenfall and Subsea 7 have signed a contract for the Hollandse Kust Zuid (HKZ) 1-4 offshore wind farm projects, located between 18-36 km off the Dutch coast in the North Sea.
The contracted work scope includes the transport and installation of approximately 140 wind turbine monopile foundations and 315km of 66kV inner array grid cables in water depths between 18 and 27 metres. Offshore installation is scheduled for execution in 2021 and 2022 using Seaway 7's heavy lift, cable lay and support vessels. The contract is subject to a final investment decision by Vattenfall.