ISO Logo
February 2, 2021


Information Only


BPM Change Management: Proposed Revision Requests and Updated BPMs Posted as of 2/2/21


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


New Feature: BPM PRR updates will now be part of the ISO Daily Briefing in addition to being listed in the “Announcement” sections of the BPM change management tool. These updates will 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. To sign up for the Daily Briefing, please go to:


The PRRs listed below have an open 10-business day comment or appeal period from Feb. 2, 2021 through Feb. 16, 2021.


New PRRs


PRR 1314 Outage Management BPM, Commitment cost enhancement phase 3 Tariff clarification for hydro units

PRR 1315 Reliability Requirements BPM, Commitment cost enhancement tariff clarification process policy initiative

PRR 1316 Reliability Requirements BPM, Emergency PRR, Clarification on PRR 1280 Status

PRR 1317 Market Operations BPM, Clarifying language for market operations BPM for resource adequacy bidding obligation

PRR 1318 Direct Telemetry BPM, New telemetry requirements due to NERC standard BAL-003-1.1

PRR 1319 Definitions and Acronyms BPM, Annual update an reconciliation for definitions and acronyms

PRR 1320 Settlements and Billing BPM, Emergency PRR Update metered subsystems deviation penalty quantity pre-calculation BPM to resolve excess behind the meter production issue for load following metered subsystems

PRR 1321 Market Instruments BPM, Proxy demand resources dispatch information


ISO Recommendations


PRR 1310 Direct Telemetry BPM, Emergency PRR, New requirements for hybrid resources and transport layer security

PRR 1311 Energy Imbalance Market BPM, Emergency PRR, Intertie multi-stage generating resources modeling for energy imbalance market participating resources

PRR 1312 Market Operations BPM, Following trajectory between dispatch operating target

PRR 1313 Market Operations BPM, Emergency PRR, Following trajectory between dispatch operating target


ISO Final Decisions


PRR 1303 Market Operations BPM, Intertie deviation settlement

PRR 1304 Market Instruments BPM, Negotiated rates new process changes for market instruments BPM

PRR 1305 Energy Imbalance Market BPM, Negotiated rates new process changes for energy imbalance market BPM

PRR 1306 Settlements and Billing BPM, Emergency PRR, Updated BPM configuration guides for enforcement protocol charge group charge code 1591, 1592, and 1593 to accommodate charge code 1593 associated with daily statements

PRR 1307 Settlements and Billing BPM, Emergency PRR, Updated multiple BPM configuration guides to accommodate updating the procedure that documents the steps for submitting the transmission revenue requirement detail to the CAISO required for updating transmission access charge rates

PRR 1308 Settlements and Billing BPM, Emergency PRR, To support energy imbalance market enhancements 2020, specifically symmetrical wheeling configuration changes to real time marginal losses offset energy imbalance market

PRR 1309 Generator Interconnection and Deliverability Allocation Procedures BPM, Clarification on point of interconnection changes, independent study process eligibility, interconnection financial security refunds, and allowable actions when projects are parked


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 at


Nicole Hines at 916-608-5862 or

Engage with us!
isoball twitterball RSSball Facebookball YouTube
Daily Briefing
Sign up
Daily Briefing
ISO Today
ISO Today
Flex Alerts
Sign up
Flex Alerts

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