BPM change management: Proposed revision requests and updated BPMs posted as of 11/25/25

The California ISO has posted new Proposed Revision Requests (PRRs) reflecting edits to Business Practice Manuals (BPMs). Revised BPMs that have completed the BPM change management process are posted in the BPM Library. All PRRs and related activities are publicly available through the BPM change management site.

BPM PRR updates are part of the ISO Daily Briefing in addition to being listed in the “Announcement” sections of the BPM change management tool. These updates include PRRs that have become available for review, upcoming BPM meetings, and comment due dates. All registered BPM users should continue to reference the BPM Change Management tool to see current PRR status. Subscribe to the Daily Briefing to stay up to date.

The PRRs listed below have an open 10-business day comment or appeal period from Nov.  25, 2025, through Dec. 9, 2025.

New ISO PRR’s

PRR 1653 Market Operations BPM, Real Time market High and low unit operating limit usage for Regulation

PRR 1654 Congestion Revenue Rights BPM, Changes related to additional collateral requirement

PRR 1655 Transmission Planning Process BPM, Subscriber PTO updates from Tariff Section 24

PRR 1656 Outage Management BPM, Clarifying Nature of Work for generation outages related to distribution utility limitations

PRR 1657 Scheduling Coordinator Certification and Termination BPM, clarifying real-time test requirement and adding section for contact list requirements

ISO Recommendations

PRR 1642 Generator Interconnection and Deliverability Allocation Procedures BPM, Intra-cluster prioritization deliverability clarification

PRR 1643 Generator Management BPM, Limited Operation Study Deliverability Clarification

PRR 1651 Candidate CRR Holder Registration BPM, Update Training CBT List for CRR Certification

PRR 1652 Market Operations BPM, Real-time bid cost recovery calculations for limited energy storage resources

PRR’s Placed on Hold

PRR 1644 Generator Interconnection and Deliverability Allocation Procedures BPM, Stand-Alone Network Upgrade Clarification

PRR 1647 Generator Interconnection and Deliverability Allocation Procedures BPM, Clarification of project financial-security posting requirements

Pending Board Approval

PRR 1640 BPM Change Management BPM, New PRR status, additional and general PRR updates

ISO Final Decisions 

PRR 1639 Market Operations BPM; Remove sunset of AET and add provision for RC Action

PRR 1641 Market Operations BPM, Ability for CAISO to initiate verification from resource owner

PRR 1645 Generator Management BPM, Commercial Viability Criteria PPA demonstration

PRR 1646 Reliability Requirements BPM, Mixed-Fuel Resource FCDS and NQC clarification

PRR 1647 Generator Interconnection and Deliverability Allocation Procedures BPM, Clarification of project financial-security posting requirements

PRR 1649 Compliance Monitoring BPM, Request for additional data

PRR 1650 Market Operations BPM, New Market Automation to prevent Market Disruptions in RTD and STUC.