August 22, 2019 — As budding offshore wind development brings the U.S. to the brink of a new chapter in energy production, questions remain as to how radar interference caused by wind turbines will be diminished or eliminated.
Vineyard Wind’s 84-turbine wind farm, slated for an Atlantic lease area about 15 miles south of Martha’s Vineyard, effectively had the rug pulled out from underneath it August 9, when the Department of the Interior announced the Bureau of Ocean Energy Management (BOEM) would hold off signing a Final Environmental Impact Statement (FEIS) and re-examine potential impacts posed by the project. Radar was not specifically cited as something the feds would take a second look at. However, weather and aeronautical radar are all well-documented as being adversely affected by wind turbines, and a handful of studies show marine radar is also hampered by wind turbines. Fishermen who spoke with The Times said they already work in an inherently dangerous industry, and offshore radar interference has the potential to exacerbate that danger.
Technological measures to lessen radar interference from turbines are being researched and slowly implemented in the U.S. and Europe. However, none appear to be folded into the construction plans for Vineyard Wind. In its Revised Navigation Risk Assessment, Vineyard Wind borrowed from a 2009 U.S. Coast Guard review for the never-realized Cape Wind project, and stated for its own project, “impacts to radar should not negatively impact a mariner’s ability to safely navigate in the [wind development area]; even so, Vineyard Wind will work with stakeholders to identify potential mitigation measures, as necessary.”