FERC directs NERC (i) to develop new or modified Reliability Standards that address reliability gaps related to inverter-based resources (IBRs) in the following areas:  data sharing; model validation; planning and operational studies; and performance requirements; and (ii) to submit an informational filing on or before Jan 17, 2024 that includes a detailed, comprehensive standards development plan tht provides for the FERC filing of such Standards by November 4, 2026.