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Market Notice
April 30, 2019


Request for Comment


Business Practice Manuals

BPM Change Management: Proposed Revision Requests and Updated BPMs Posted as of 4/30/19


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 April 30, 2019 through May 14.


New PRRs

PRR 1154 Reliability Requirements BPM, Resource adequacy availability incentive mechanism exemption updates


ISO Recommendations

PRR 1153 Settlements and Billing BPM, Emergency PRR, 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

PRR 1152 Generator Interconnection and Deliverability Allocation Procedures BPM, Evaluation of generator reactive capability

PRR 1151 Direct Telemetry BPM, Temporary telemetry exemptions

PRR 1150 Transmission Planning Process BPM, Updates to Section 10 of Transmission Planning Process BPM

PRR 1149 Market Instruments BPM, Emergency PRR, Commitment cost enhancement phase 3 attachment B


ISO Final Decisions

There are no new PRRs to report.


BPM updates

The ISO has posted a document reflecting updated BPMs post to the BPM Library. Click here to view the document, which is located on the ISO website at


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.


Julia Payton at 916-608-1133 or

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