Data / Federal rules / 2025-14304
Reliability Standards for Frequency and Voltage Protection Settings and Ride-Through for Inverter-Based Resources
The Federal Energy Regulatory Commission published this final rule in the Federal Register on July 29, 2025. It took effect on August 28, 2025.
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What the agency says
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.
Key facts
- Document number
- 2025-14304
- Type
- Final rule
- Action
- Final rule
- Agency
- Energy Department; Federal Energy Regulatory Commission
- Published
- July 29, 2025
- Takes effect
- August 28, 2025
- Dates
- This rule is effective August 28, 2025.
- Docket
- Docket No. RM25-3-000; Order No. 909
- Code of Federal Regulations
- 18 CFR 40
- Pages
- 18
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Everything from the Federal Energy Regulatory Commission · Published in July 2025
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