This bill establishes new regulations regarding the siting of utility-scale wind energy facilities in Washington State to prevent interference with military installations. Specifically, it prohibits the approval of applications for such facilities if any part of the facility is located within 15 miles of a military installation. This restriction applies to both the state council and local governments, ensuring a consistent approach across different levels of authority. Notably, facilities that received certification prior to the effective date of this bill are exempt from these new restrictions, and existing certifications cannot be revoked if a new military installation is established closer than 15 miles after the facility's approval.

The bill defines "military installation" broadly to include various types of military bases and facilities under the jurisdiction of the U.S. Department of Defense, while explicitly excluding facilities primarily used for civil works or flood control projects. This legislative measure aims to balance the development of renewable energy sources with the operational needs and safety of military installations in the state.