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 Aug. 29, 2023 through Sept.13, 2023.
New PRRs
PRR 1525 Energy Imbalance Market BPM, Emergency PRR, Emergency assistance energy transfer opt-in process
PRR 1526 Market Operations BPM, Addition of a withdrawal limit for scheduling coordinators of battery resources
PRR 1527 Market Operations BPM, Changes to automated dispatch system partial accept and T-minus 20 auto approval
PRR 1528 Settlements and Billing BPM, Created and updated multiple BPM configuration guides to accommodate energy storage enhancements phase 1 track 2 initiative
PRR 1529 Settlements and Billing BPM, Update configuration guide for intertie deviation settlement to resolve rounding issue
PRR 1530 Market Operations BPM, Changes to ancillary awards constraints and bidding requirements implemented in energy storage enhancements track 1
PRR 1531 Market Operations BPM, Two new customer market results interface reports that display market priority types
PRR 1532 Energy Imbalance Market BPM, Addition of exemption to failed-to-start rule for hydro resources
PRR 1533 Market Operations BPM, Removal of day ahead economic market priority type
PRR 1534 Market Instruments BPM, Western energy imbalance market Washington greenhouse gas enhancements
PRR 1535 Energy Imbalance Market BPM, Western energy imbalance market Washington greenhouse gas enhancements
PRR 1536 Market Operations BPM, New payment for exceptional dispatches holding state-of-charge
PRR 1537 Market Instruments BPM, New customer market results interface report that displays Hold state-of-charge exceptional dispatch data
ISO recommendations
PRR 1519 Managing Full Network Model BPM, Emergency PRR, Utilize North to South and South to North nomograms in all real-time markets to manage physical and market flows with all lines in service and/or outage conditions
PRR 1520 Congestion Revenue Rights BPM, Emergency PRR, Process for handling disconnected PNodes for congestion revenue rights purposes
PRR 1521 Market Operations BPM, Emergency PRR, New process to automatically adjust day ahead electronic tags to the match the energy profile to the residual unit commitment final schedule
PRR 1522 Settlements and Billing BPM, Documentation only updates to the real time energy quantity pre-calculation and metered energy adjustment factor pre-calculation for the BAResBaseScheduleEnergy variable.
PRR 1523 Reliability Requirements BPM, Maximum import capability enhancements policy changes
PRR 1524 Market Instruments BPM, Maximum import capability enhancements
ISO final decisions
PRR 1515 Scheduling Coordinator Certification and Termination BPM, Adding additional clarifying information for the 24/7 grid test
PRR 1516 Market Instruments BPM, Emergency PRR, Bidding limitations for non-generating resources and default energy bid changes associated with Energy Storage Enhancements Track 1
PRR 1517 Market Instruments BPM, Transition cost bid adjustments, reference level change request clarifications, hydro default energy bid update; wholesale electricity price calculation update
PRR 1518 Metering BPM, Meter data retention
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 BPM 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.
