The message from the Trump administration is that the wind turbines can disrupt radar systems and mislead US defenses. It now wants to begin negotiations with affected wind turbine operators and states to address the security risks, the US Department of the Interior writes in a statement.
Earlier in December, a federal judge overturned the Trump administration's decision to ban new offshore wind farms.
The projects affected are Vineyard Wind 1, Revolution Wind, Sunrise Wind, Coastal Virginia and Empire Wind 1.
The announcement sent wind power stocks generally lower, including Danish Ørsted and wind turbine manufacturer Vestas Wind Systems.
Ørsted's share price fell sharply after the announcement, and by 3:30 p.m. had fallen just over 12 percent on the Copenhagen Stock Exchange.
