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 July 5, 2022 through June 19, 2022.
New PRRs
PRR 1437 Settlements and Billing BPM, Updates to BPM for new settlement timeline
PRR 1445 Market Operations BPM, Updates to the list of acceptable use limitations, clarifications to the calculation of opportunity cost adders for use-limited resources
PRR 1446 Market Instruments BPM, Updates to the list of acceptable use limitations, clarifications to the calculation of opportunity cost adders for use-limited resources
PRR 1447 Reliability Requirements BPM, Removal of references to reserve sharing
PRR 1448 Metering BPM, Hybrid metering requirements
ISO Recommendations
PRR 1442 Market Instruments BPM, Emergency PRR, Allowing for the bidding of negative pumping costs
PRR 1443 Reliability Requirements BPM, 2023 Availability assessment hours
PRR 1444 Demand Response BPM, Monitoring data clarification
ISO Final Decisions
PRR 1431 Settlements and Billing BPM, Emergency PRR, Updated CC 6046 over and under scheduling western energy imbalance market allocation to accommodate resource sufficiency evaluation enhancements phase 1
PRR 1432 Market Operations BPM, Addition of 15 interval threshold to regulation service minimum performance testing
PRR 1433 Market Operations BPM, Enforcement of aggregate capability constraints
PRR 1434 Market Instruments BPM, Proxy demand response resource bidding above $1000 energy bid cap
PRR 1435 Settlements and Billing BPM, Update configuration guide to match settlements BPM formula on virtual bid adjustment for western energy imbalance market balancing authority areas as configured
PRR 1436 Settlements and Billing BPM, Updated BPM configuration guide for charge code 4575 to clarify business rule 4.1 exclusions covering flexible ramping
PRR 1438 Demand Response BPM, Resource sufficiency evaluation enhancements
PRR 1439 Market Instruments BPM, Emergency PRR, New CAISO market results interface, and open access same time information system reports for resource sufficiency evaluation and transmission service and market scheduling priorities project
PRR 1440 Energy Imbalance Market BPM, Emergency PRR, Enhancements to the resource sufficiency evaluation tests per the resource sufficiency evaluation enhancement phase 1 project
PRR 1441 Market Operations BPM, Ramp rate limitation for certain inverter-based resources
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 BPM webpage of the ISO website.
