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Offshore Wind Journal

Dutch site to be used to test innovation and promote species diversity

Tue 10 Apr 2018 by David Foxwell

Dutch site to be used to test innovation and promote species diversity
The innovation site at Borssele V is part of the much larger Borssele windfarm zone

The winners of the tender for the Borssele V offshore wind innovation site in the Netherlands are to use it to test a new way to connect monopiles and transition pieces and to promote marine life in offshore windfarms.

The Two Towers consortium, consisting of Van Oord, Investri Offshore and Green Giraffe, has won the tender for Borssele V windfarm. MHI Vestas Offshore Wind is the preferred supplier for the wind turbines.

Borssele V, designated as an innovation site, is situated in site III of the Borssele windfarm zone. The offshore windfarm is located more than 20 km off the coast of Zeeland, the Netherlands and will consist of two turbines, each of 9.5 MW.

Once operational in 2021, the 19 MW offshore windfarm will provide sustainable energy to 25,000 households.

By inviting tenders for the site, the Dutch Government and Netherlands Enterprise Agency were looking to encourage testing and demonstration of advanced offshore wind technology; contribute to reducing the cost of wind energy; contribute to the Dutch economy and increase the market and export potential for Dutch companies; and engage small and medium-sized enterprises and institutes in developing the windfarm.

Bids were ranked according to four criteria, including their ability to contribute to cost reduction; their contribution to the Dutch economy; level of innovation; and the quality of the project (approach and methodology, risk management, feasibility, participating parties, effectiveness and efficiency of the resources deployed).

In the winning bid, Van Oord is responsible for the design and offshore work; Green Giraffe will assist with project management and financing; and Investri Offshore will provide the project director.

Among the innovations that the consortia will now test is an innovative slip joint that will connect the tower and transition piece for the turbines. The technology, developed by Van Oord and partners, has two major advantages: it is maintenance-free and it reduces installation time, resulting in potential major cost savings.

The project will also see a new type of scour protection used on the seabed. Part of the scour protection for the project will make use of artificial reef systems, including oyster reefs, which will promote species diversity.

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