BPM change management: Proposed revision requests and updated BPMs posted as of 4/1/25

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 activity 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 April 1, 2025, through April 15, 2025.

New ISO PRR’s

PRR 1620 Reliability Requirements, Clarification regarding eligible generating units as new use import commitments. 

PRR 1621 Candidate CRR Holder Registration, Emergency PRR, Updating application with new congestion revenue rights customer types. 

ISO Recommendations

PRR 1617 Not Used.
PRR 1618 Market Instruments BPM, Emergency PRR, Clarifications to the after-market cost recovery process. 

PRR 1619 Congestion Revenue Rights BPM, Changes related to implementation of the congestion revenue rights replacement project.

ISO Final Decisions

PRR 1614 Demand Response BPM, Emergency PRR, Demand response related changes due to the penalty enhancements: demand response, investigation, tolling.

PRR 1615 Scheduling Coordinator Certification and Termination BPM, Emergency PRR, updating application to include information for the extended day ahead market.

PRR 1616 Reliability Requirements BPM, Capacity procurement mechanism track 1.

BPM Library Updates

The PRR tracking log on the ISO website lists the updated BPMs in the library. 

The ISO may unilaterally make and implement revisions to the BPMs in emergency circumstances, as set forth in Sections 22.4.3 and 22.11 of the ISO Tariff and in Section 2.6 of the Business Practice Manual for BPM Change Management. An emergency PRR will continue through the BPM change management stakeholder process to obtain stakeholder input on the revisions and make other recommendations, as necessary.

Please note that affected parties must register in order to submit a PRR or written comments.

More information on the BPM change management process is available on the BPM webpage of the ISO website.