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New England developers propose uniform turbine layout

4C Offshore | James Bernthal-Hooker
By: James Bernthal-Hooker 21/11/2019 Vineyard Wind et al
In a joint statement, the five offshore wind developers holding lease areas off New England have agreed to adopt a uniform turbine layout.

The developers – Vineyard Wind, Equinor, Mayflower Wind, and Deepwater (Ørsted and Eversource) – have proposed a format under which turbines will be spaced one nautical mile apart, and “arranged in east-west rows and north-south columns, with the rows and columns continuous across all New England lease areas.” They have submitted their proposal to the United States Coast Guard for review.

The move follows intense issues with fisheries and other seabed stakeholders as projects face often unexpected hurdles on the way to construction. The 800 MW Vineyard Wind project in Massachusetts, originally slated to begin construction by the end of the year, is facing delays as the Bureau of Ocean Energy Management carries out a supplementary Final Environmental Assessment. Fisheries had objected to Vineyard’s original layout options on the grounds that the closeness of the turbines would disrupt maritime traffic. The new proposed layout is designed to mitigate concerns around navigation for fishing vessels.

In the joint statement, the developers claim that:

Most traffic in the general region is transiting around, or along the outside edges, of the NE WEA [New England Wind Energy Area/s];

Most of the transiting vessels are fishing vessels, and they follow a wide range of transit paths through the NE WEA as they are coming from several different ports and heading to a variety of fishing grounds;

Vessels up to 400’ length can safely operate within the proposed 1x1 nm layout, and historic transit data shows vessels over this length tend to follow existing Traffic Separation Schemes already outside the NE WEA;

The uniform 1x1 nm layout will provide ample navigation transit corridors throughout the NE WEA."



Early indications from Fishery Nation suggest that the scallop industry is not best pleased with the proposal, because its members were not consulted.

The New England state of Rhode Island currently hosts the United States’ only operational wind farm, the 30 MW Block Island project, which was fully commissioned in 2017.

For more information please follow the links provided. Alternatively, click here to view the project on 4C Offshore's interactive map.

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