Hollandse Kust Zuid installation campaign reaches milestone

4C Offshore | Tom Russell
By: 09/09/2022 Vattenfall

Vattenfall announced that the construction of the Hollandse Kust Zuid offshore wind farms has reached a new milestone. All 140 monopiles were piled into the Dutch North Seabed. 

Seaway Heavy Lifting was tasked with the installation of foundations and deployed its heavy lift vessel
Seaway Strashnov. Each monopile weighs between 735-955 tons, measure 62-75 metres long and will be installed in water depths varying from 17 to 28 metres. 

Mary Carol Anderson, foundation installation Manager, commented: “A big achievement by the project team, our contractors – Seaway Heavy Lifting & SIF – and all other parties involved.  Going from installing 34 foundations in the 2021 summer campaign, to installing 106 foundation in 2022, is a huge testament to the team!” 

“Last pile is in. Done and dusted. Thanks to all involved!” – Victor Donchenko, Captain of the Seaway Heavy Lifting. 

Construction of the wind farms started last summer and the wind farm is scheduled to be fully operational in 2023. The four sites will consists of a total of 140 Siemens Gamesa SG 11.0-200 DD turbines, each 11 MW.They will be connect to two 700MW offshore substations operated by Dutch TSO Tennet – HKZ Alpha and HKZ Beta.

The Hollandse Kust Zuid wind farm zone consists of two sites,
Hollandse Kust Zuid 1&2 and Hollandse Kust Zuid 3&4, and is being developed by Vattenfall, which secured the rights to the projects with subsidy free bids in March 2018 and July 2019. It is owned by Vattenfall, BASF and Allianz, is expected to have a total capacity of 1 500 MW, equalling the consumption of approximately 1.5 million Dutch households.


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