On October 19, 2023, the Federal Energy Regulatory Commission (FERC) issued its Final Rule in Docket No. RM22-12-000, Order No. 901, Reliability Standards to Address Inverter-Based Resources (IBRs).
The Final Rule states in part:
The Federal Energy Regulatory Commission (Commission) is directing the North American Electric Reliability Corporation (NERC), the Commission-certified Electric Reliability Organization, to develop new or modified Reliability Standards that address reliability gaps related to inverter-based resources in the following areas: data sharing; model validation; planning and operational studies; and performance requirements. The Commission is also directing NERC to submit to the Commission an informational filing within 90 days of the issuance of this final rule that includes a detailed, comprehensive standards development plan providing that all new or modified Reliability Standards necessary to address the inverter-based resource-related reliability gaps identified in this final rule be submitted to the Commission by November 4, 2026.
See Final Rule here: https://www.ferc.gov/media/e-1-rm22-12-000