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October 6, 2020


Request for Comment


Legal & Regulatory

BPM Change Management: Proposed Revision Requests and Updated BPMs Posted as of 10/6/20


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 Oct. 6, 2020 through Oct. 20, 2020.


New PRRs


PRR 1282 Market Operations BPM, Emergency PRR, Scheduling of export resources in real time market

PRR 1283 Demand Response BPM, Emergency PRR, Update to section 5.7, and correction to Appendix B and F for energy storage and distributed energy resources 3B

PRR 1284 Generator Interconnection and Deliverability Allocation Procedures BPM, Determining refundable amount of interconnection financial security for withdrawn energy only projects in section 8.10.

PRR 1285 Reliability Requirements BPM, Emergency PRR, Reliability must run credits for legacy reliability must run contracts

PRR 1286 Reliability Coordinator Services BPM, Updates to settlements timeline and overall cleanup and formatting


ISO Recommendations


PRR 1278 Market Operations BPM, Emergency PRR, Non-generator resource update

PRR 1279 Energy Imbalance Market BPM, Clarification for greenhouse gas allocation for the energy imbalance market

PRR 1280 Reliability Requirements BPM, Local regulatory authority resource adequacy adjustments

PRR 1281 Market Instruments BPM, Energy imbalance market enhancements 2020


ISO Final Decisions


PRR 1260 Metering BPM, Storage resource requirement per FERC Order 841

PRR 1261 Market Instruments BPM, Market Instruments BPM changes due to FERC Order 841

PRR 1262 Managing Full Network Model BPM, Aliso Canyon gas-electric coordination Phase 5

PRR 1263 Market Instruments BPM, Excess behind the meter production report

PRR 1264 Credit Management and Market Clearing BPM, Updates to the estimated aggregate liability calculation due to the market settlement timeline initiative

PRR 1265 Reliability Requirements BPM, Capacity procurement mechanism soft offer cap policy initiative

PRR 1266 Metering BPM, Settlement Timeline per the market settlements timeline transformation initiative and excess behind the meter production data

PRR 1267 Market Instruments BPM, Market instruments impacts due to market settlement timeline transformation

PRR 1268 Market Instruments BPM, Market instruments automated dispatch system dispatch operating target initiative

PRR 1269 Market Operations Appendix BPM, Market operations appendices automated dispatch system dispatch operating target initiative

PRR 1270 Market Operations BPM, Market Operations automated dispatch system dispatch operating target initiative

PRR 1271 Energy Imbalance Market BPM, Energy imbalance market: market settlement timeline transformation

PRR 1272 Demand Response BPM, Emergency PRR, Demand response effective flexible capacity

PRR 1273 Generator Interconnection and Deliverability Allocation Procedures BPM, Generator interconnection and deliverability allocation procedures: FERC Order 845 final implementation

PRR 1274 Market Operations BPM, Flexible ramping product buffer interval

PRR 1275 Settlements and Billing BPM, Pre-calc residual unit commitment no pay quantity and pre-calc spin non-spin no pay quantity to accommodate incorporating proxy demand resource – load-shifting resource curtailment resources into residual unit commitment and spin/non-spin processes

PRR 1276 Settlements and Billing BPM, to support FERC 841 requested adjustments, configuration changes to exempt negative energy for storage resources settlement in cases where the associated utility distribution company or retail utility is unable/ unwilling to separate wholesale and retail charges

PRR 1277 Settlements and Billing BPM, Configuration guide for pre-calc resource adequacy availability incentive mechanism to accommodate commitment cost enhancement tariff clarifications


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


Nicole Hines at 916-608-5862 or

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