Offshore Wind Farm: Borssele III and IV Ready in the North Sea


The Borssele III and IV offshore wind farm located in the North Sea off the coast of the Netherlands is ready to go into operation. Developed by the Blauwwind consortium, this 731.5 MW wind farm will be officially handed over to the operations team this Thursday, February 18, 2021. 3 TWh/year are expected, enough to supply 825,000 homes, or 2.3% of Dutch electricity demand.

A 731.5 MW offshore wind farm

77 MHI Vestas 9.5 MW turbines

The Borssele III & IV offshore wind farm is now producing electricity at its maximum capacity of 731.5 MW. The first kilowatt-hour was produced in August of last year, before being officially commissioned on Thursday, February 18.

The first of 77 9.5 MW Vestas MHI turbines for the project was installed in late May 2020. By the end of November 2020, all wind turbines were in place.

Read on North Sea Offshore Wind Farm: 759 MW in the Netherlands

Development of the project by the Blauwwind consortium

In December 2016, the Blauwwind consortium won the tender to develop the project with an offered price of 5.45 euro cents/kWh. The consortium joins Partners Group (45%) to Shell (20%), DGE (15%), as well as Eneco Group (10%), and Van Oord (10%).

On-site construction began in October 2019 with Van Oord’s Aeolus vessel installing the wind farm turbines.

3 TWh expected per year or 2.3% of Dutch demand

Borssele III & IV are expected to produce approximately 3 TWh per year. This would be enough to power 825,000 Dutch homes, or 2.3% of the total electricity demand in the Netherlands.

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An offshore wind farm with a biodiversity initiative

The Borssele III & IV project is also a joint initiative with De Rijke Noordzee. The objective is to create oyster reefs. As a result, 2400 oysters were placed around the foundations of the wind farm turbines in November 2020. The goal is to determine if oysters can become permanently established. Better yet, to see if they attract other marine species such as lobsters.

Finally, this offshore wind farm is a large-scale project that differs from others by the oyster farming initiative that accompanies it. In addition to providing clean energy, the park would also limit its footprint on biodiversity.

Participating in the project, Eneco and Shell are also developing another offshore wind farm off the Dutch coast. Named Hollandse Kust Noord, it is expected to develop approximately the same power as Borssele III and IV by 2023.

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