Notification of revised RC West operating procedures RC0110, RC0320, RC0420, and RC0610

RC West has revised the operating procedure(s) referenced below. 

RC0110 Communication Protocols, version 4.4, effective July 31, 2025. 

Annual Review: Minor grammar edits and removed history prior to five years. 

RC0320 Outage Review and Coordination, version 3.3, effective July 31, 2025. 

Periodic Review: References: Included North American Electric Reliability Corporation (NERC) Standards FAC-014 and IRO-017. Minor format and grammar edits and removed history prior to five years.

RC0420 Event Reporting, version 2.1, effective July 31, 2025.

Appendix 1: Added lines 25 and 26 to Table for reporting fires with and without potential reliability impacts.

Minor format and grammar edits and removed history prior to five years.

RC0610 System Operating Limits Methodology for the Operations Horizon, version 3.3, effective July 31, 2025.

Removed clarification for less stringent Credible Multiple Contingency (CMC) performance requirement from Section G, as more discussion on this topic is needed. Removed Footnote 7 regarding Transmission Operator (TOP) discretion on contacting the RC for post-contingency high voltage exceedances. Footnote is no longer applicable with NERC FAC-011-4. Minor formatting and grammar edits.

The California ISO and RC West operating procedures are available on the Operating Procedures webpage.