First Foundation Stands at Subsidy-Free Hollandse Kust Zuid

Seaway 7 has installed the first of the 140 monopile foundations at the Hollandse Kust Zuid wind farm offshore the Netherlands.

The 1.5 GW Hollandse Kust Zuid is the first subsidy-free offshore wind project to reach this stage of development.

The wind farm will also be the largest in the world once fully commissioned by the summer of 2023.

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Seaway 7 is in charge of transporting and installing the wind farm’s monopile foundations, and 315 kilometres of 66 kV inter-array grid cables.

Offshore installation will continue through 2021 and 2022 using Seaway 7’s heavy lift, cable lay, and support vessels, the company said.

The TP-less monopile foundations, supplied by Sif, will support Siemens Gamesa’s SG 11.0-200 DD wind turbines.

Siemens Gamesa has also selected Sif’s Maasvlakte site at the Port of Rotterdam, where the foundations are being produced, as the marshaling hub for the project.

Vattenfall, which won the development rights for Hollandse Kust Zuid’s four sites in two Dutch tenders, is building the project together with its recently announced partner BASF, who recently bought a 49.5 per cent stake in the project.

Photo: First monopile foundation at Hollandse Kust Zuid. Source: Seaway 7