Amends the Public Utilities Act. Provides that applicable State agencies shall take final action on an application for a new small modular nuclear reactor within 150 days after the application is determined or considered to be complete. Provides that an applicable State agency may extend the final action time period for no more than an additional 150 days for good cause. Provides that, if an applicable State agency fails to take final action on an application within the initial 150-day time period and the time period is not extended, the application shall be considered approved by the State agency. Provides that, if the time period is extended and an applicable State agency fails to take final action on an application within the extended time period, the application shall be considered approved by the State agency. Effective immediately.