The Department of Defense (DOD) recently released "The Effect of Windmill Farms on Military Readiness" report that states construction of wind farms can proceed, as long as the farms are not interrupting any national radar system.
In the report, the DOD notes that wind farms will be evaluated on a case-by-case basis, and the department will look at whether a project's number of turbines, heights and rotation will present challenges to radar systems. It states that the DOD will "allow construction of wind turbines, while maintaining defense readiness capabilities."
The report reveals that the location of a wind farm will be evaluated, as well as its proximity to military training, testing, and development and monitoring sites. The turbines also cannot impact the Federal Aviation Administration's U.S. airspace system, or the National Weather Service.