The administration of Donald Trump has effectively stalled the expansion of onshore wind energy projects across the United States, according to a report by the Financial Times published on Sunday.
Approvals for roughly 165 wind projects on private land are being delayed as the Pentagon undertakes a review of potential national security risks.
The affected developments span multiple stages, including projects awaiting final approval, those under negotiation, and others that would not typically require defense oversight.
Since August 2025, developers have encountered mounting obstacles, including halted communications, canceled meetings without rescheduling, and notices that application processing has been suspended.
According to the report, letters issued in early April indicated that the Pentagon is reassessing how it evaluates the national security implications of energy infrastructure.
Officials have raised concerns that wind turbines could interfere with radar systems and other sensitive military operations, though details remain largely classified.
The policy shift has triggered uncertainty across the renewable energy sector, with industry groups warning of delays to investment and deployment timelines.
The Trump administration has previously faced legal challenges after suspending similar projects, citing newly identified security threats linked to turbine-related interference.
Critics argue the move reflects longstanding opposition by Trump, who has repeatedly described wind energy as costly, inefficient, and visually unappealing.
The developments highlight growing friction between U.S. clean energy ambitions and national security priorities, as federal agencies tighten scrutiny of infrastructure projects.