HB 4577 enhances reporting and accountability measures for dispatchable and non-dispatchable electric generation facilities in the ERCOT power grid. It mandates an annual report from the Public Utility Commission (PUC) detailing costs related to backing up generation facilities and the transmission of electricity. The bill also requires power plant operators to demonstrate their ability to provide firm energy availability during peak demand periods, with financial penalties for non-compliance and incentives for exceeding performance requirements​.