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August 21, 2019


Request for Comment


Business Practice Manuals

BPM Change Management: Proposed Revision Requests and Updated BPMs Posted as of 8/21/19


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 Aug. 21, 2019, through September 4. The PRRs listed below will be discussed during the September and October BPM change management PRR review meetings.


New PRRs

PRR 1176 Market Operations BPM, Energy storage and distributed energy resources 3A bid option and expected energy calculation charges

PRR 1177 Settlements and Billing BPM, Updated BPM configuration guide for pre-calculation high voltage access charge metered load 5.5 to accommodate FERC Order 841

PRR 1178 Settlements and Billing BPM, Update the pre-calculation metered subsystem deviation penalty quantity configuration to properly calculate the metered subsystem expected instructed imbalance energy as per the metered subsystem agreement definition and configuration to accommodate the changes as per market issue assessment form 2019-26 metered subsystem agreement gaps

PRR 1179 Settlements and Billing BPM, Updated BPM configuration guide for charge code 8830 monthly resource adequacy availability incentive mechanism settlement to accommodate pass through bill calculation visibility to scheduling coordinators


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