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July 30, 2019


Request for Comment


Business Practice Manuals

BPM Change Management: Proposed Revision Requests and Updated BPMs Posted as of 7/30/19


The California ISO has posted new proposed revision requests (PRRs) reflecting edits to Business Practice Manuals (BPM). 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 at


The PRRs listed below have an open 10-business day comment or appeal period from July 30, 2019 through August 13.


New PRRs

PRR 1171 Market Operations BPM, Load conformance limiter logic in the fifteen-minute market

PRR 1172 Energy Imbalance Market BPM, Energy imbalance market thresholds

PRR 1173 Market Instruments BPM, Energy imbalance market and CAISO balancing authority area transmission loss clearing results

PRR 1174 Demand Response BPM, New Demand Response BPM and language for the energy storage and distributed energy resources 3a initiative

PRR 1175Metering BPM, Clarify audit period for scheduling coordinator self-audit and move language from Metering BPM to New Demand Response BPM


ISO Recommendations

There are no PRRs to report.


ISO Final Decisions

There are no PRRs to report.


BPM Library updates

The reference document 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 ISO website at


Julia Payton at 916-608-1133 or

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California Independent System Operator | P.O. Box 639014 | Folsom, CA 95630 | United States