A US District Court in Oregon has ordered the Department of Defense to restart its legally required review process for wind projects, ending a halt that had blocked all new US wind development since August 2025. The ruling is a setback for the Trump administration’s wider efforts to curb wind power, which have relied in part on claims that turbines could interfere with radar and create national-security risks.

The DoD had progressively stopped signing, drafting and negotiating agreements intended to mitigate radar interference from planned onshore wind farms. Judge Karin Immergut ruled that Congress had set a mandatory statutory framework for these reviews and that the department could not simply withdraw from it; any change would require legislation. The court ordered the DoD to follow the mandated timetable and submit progress reports every 30 days, after developers and industry groups successfully challenged the policy.