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OperationsNotification of revised RC West operating procedure RC0120B
RC West has revised the operating procedure referenced below.
RC0120B RC West IRO-010 Data Specification for Adjacent RCs, version 4.7, effective Jan. 9, 2026.
Data Specification tab: Updated line 24 Data Item, replacing Net Actual Interchange with Actual Net Interchange (NIA) and line 25 Data Item, replacing Net Scheduled Interchange with Scheduled Net Interchange (NIS) to align with North American Electric Reliability Corporation (NERC) BAL-004-WECC-4 update.
Exceptions tab: Added exceptions for SPP RC-1.13 and RC-6.10.2. Removed Operationally Affected Parties, as duplicative of Version History tab.
The California ISO and RC West operating procedures are available on the Operating Procedures webpage.
Please contact the CAISO/RC West Procedure Control Desk at ProcedureControl@caiso.com with any questions