Reliability Standards for Frequency and Voltage Protection Settings and Ride-Through for Inverter-Based Resources

Document 2025-14304 is a Final Rule published by the Department of Energy in the Federal Register on July 29, 2025, with an effective date of August 28, 2025. The Federal Energy Regulatory Commission (Commission) approves proposed Reliability Standard PRC-024-4 (Frequency and Voltage Protection Settings for Synchronous Generators, Type 1 and Type 2 Wind Resources, and Synchronous Condensers), Reliability Standard PRC-029-1 (Frequency and Voltage Ride-through Requirements for Inverter-Based Resources), and a definition of "Ride-through," which the North American Electric Reliability Corporation (NERC) submitted in response to a Commission directive. In addition, the Commission directs NERC to clarify documentation requirements for legacy equipment needed to support an exemption request pursuant to Reliability Standard PRC-029- 1; to consider whether, and if so how, to address a total of two exception- and exemption-related issues raised by commenters; and to submit an informational filing that assesses the reliability impact of the exemptions to Reliability Standard PRC-029-1. View the original at https://www.federalregister.gov/documents/2025/07/29/2025-14304/reliability-standards-for-frequency-and-voltage-protection-settings-and-ride-through-for.

No. Document 2025-14304 is not classified as economically significant under Executive Order 12866. Economically significant rules require OIRA review and are estimated to have impacts of $100 million or more per year.