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June 26, 2020


Forward to Operating Department


Notification of Revised RC West Operating Procedures RC0120, RC0120A and RC0120B


RC West has revised the operating procedure referenced below.


RC0120 Guidelines for RC West IRO-010 Data Specification and Collection, version 4.0, effective June 26, 2020.

Section Req # 6.1: Expanded on default load for Pfixed and Qfixed values.

Section Req # 6.17: Clarified for shunt devices.

Section Req # 6.25: Added as new section.


RC0120A RC West IRO-010 Data Specification, version 4.0, effective June 26, 2020.

Section 4 - Updated applicable North American Electric Reliability Corporation (NERC) standards on item 4.9.

Section 6 - Added request 6.25, 6.26, and 6.27. Clarified data transfer method for requests 6.13-6.17, 6.23, and 6.24.

Reviewed changes with the Data Exchange Working Group and Operations Planning Working Group on April 16, 2020 and June 4, 2020.


RC0120B RC West IRO-010 Data Specification for Adjacent RCs, version 3.0, effective June 26, 2020

Section 1 - Clarified request RC-1.16.

Section 4 - Replaced RC-6.21 with RC-4.8 and included templates reference.

Section 5 - Consolidated RC-5.14 into RC-5.13 and added any updates to be provided; Removed PEAK references.

Section 6 - Consolidated RC-6.2-6.7 and RC-6.9 into RC-6.1. Updated the CAISO guidance document for RC-6.1, RC-6.8.1, RC-6.10-6.19, RC-6.22. Clarified RC-6.12 to system one-line diagrams and on request basis. Removed state and city from RC-6.13. Updated data update frequency for RC-6.18 and RC-6.19. Combined RC-6.20 into RC-6.10. Added request RC-6.24 and RC-6.25.


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