HB 3580 establishes restrictions on state and local government incentives for renewable energy generation facilities. The bill prohibits the granting or renewal of economic or tax incentives for the construction, maintenance, or operation of renewable energy facilities, including wind and solar power plants. However, existing incentives that were granted before the effective date of the bill may continue under their original agreements. Additionally, the bill creates a new permit requirement for renewable energy generation facilities that intend to sell electricity at wholesale. The application process includes an impact review to assess potential effects on land, water resources, wildlife, and the local economy. The Public Utility Commission (PUC) will review and approve permit applications, with final approval requiring consent from the county commissioners court where the facility is located. The bill also grants the PUC regulatory and enforcement authority over these facilities. The act applies to both new and existing incentives.