The purpose of this legislation is to update the Federal Power Act to improve the management and licensing of hydropower projects, specifically focusing on maintenance and repair processes, as well as introducing a new licensing framework for small-scale hydrokinetic energy projects. The goal is to streamline operations, encourage the development of renewable energy sources, and ensure safety and compliance with existing regulations. One of the key provisions of this legislation is the clarification of what constitutes a "substantial alteration" to hydropower projects.