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The California ISO's change management process facilitates the transparent exchange of ideas and information when the ISO considers modifications to its Business Practice Manuals (BPMs). Use​​ this site to submit and view Proposed Revision Requests (PRRs) and their statuses and to access the BPM library.

  • The purpose of BPMs is to set forth business practices that implement the ISO tariff. The ISO conducts a yearly policy initiative roadmap process to consider and rank initiatives.
  • Policy changes submitted though the PRR process will be referred to the policy initiative road map process. Each subject area in a BPM is based on enabling language in the ISO tariff.
  • The PRR process cannot be used to introduce changes that are not supported by existing tariff authority.​
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  • Click on the PRR Number to view the complete details of the PRR.
  • To view the complete title mouse hover on the PRR Title field.
  • IC - Initial Comment, RC - Recommendation Comment

  • PRR
    PRR Title
    BPM
    Status
    Category
    Submitted By
    Priority
    Last Action
    Comments
    .........
    1442Allowing for the bidding of negative pumping costs. Market InstrumentsInitial CommentBMartin, Michael (CAISO)Emergency5/26/2022 IC: 0
    RC: 0
    1441Ramp rate limitation for certain inverter-based resourcesMarket OperationsRecommendation CommentAMartin, Michael (CAISO)Normal5/26/2022 IC: 1
    RC: 0
    1440Enhancements to the resource sufficiency evaluation tests per the resource sufficiency evaluation enhancement phase 1 projectEnergy Imbalance MarketRecommendation CommentBMartin, Michael (CAISO)Emergency5/26/2022 IC: 1
    RC: 0
    1439New CAISO market results interface, and open access same time information system reports for resource sufficiency evaluation and transmission service and market scheduling priorities projectMarket InstrumentsRecommendation CommentAMartin, Michael (CAISO)Emergency5/26/2022 IC: 0
    RC: 0
    1438Resource sufficiency evaluation enhancementsDemand ResponseRecommendation CommentCSiegel, Elaine (CAISO)Normal5/27/2022 IC: 2
    RC: 0
    1437Updates to BPM for new settlement timelineSettlements and BillingInitial CommentAJerret Fischer (SRP)Normal5/26/2022 IC: 0
    RC: 0
    1436Updated BPM configuration guide for charge code 4575 to clarify business rule 4.1 exclusions covering flexible rampingSettlements and BillingRecommendation CommentAAhmadi, Massih (CAISO)Normal5/26/2022 IC: 0
    RC: 0
    1435Update configuration guide to match settlements BPM formula on virtual bid adjustment for western energy imbalance market balancing authority areas as configuredSettlements and BillingRecommendation CommentAAhmadi, Massih (CAISO)Normal5/26/2022 IC: 0
    RC: 0
    1434Reliability Demand Response Resource Bidding Enhancements in real time marketMarket InstrumentsRecommendation CommentAMartin, Michael (CAISO)Normal5/26/2022 IC: 0
    RC: 0
    1433Enforcement of aggregate capability constraintsMarket OperationsRecommendation CommentAMartin, Michael (CAISO)Normal5/26/2022 IC: 1
    RC: 0
    1432Addition of 15 interval threshold to regulation service minimum performance testing Market OperationsRecommendation CommentAMartin, Michael (CAISO)Normal5/26/2022 IC: 1
    RC: 0
    1431Updated CC 6046 over and under scheduling western energy imbalance market allocation to accommodate resource sufficiency evaluation enhancements phase 1Settlements and BillingRecommendation CommentCAhmadi, Massih (CAISO)Emergency5/26/2022 IC: 0
    RC: 0
    14302021 Contract management enhancements initiative updatesGenerator ManagementFinal DecisionCJordan, Jill (CAISO)Normal5/26/2022 IC: 0
    RC: 0
    1429Guidance for scheduling coordinators to register high priority wheelsMarket OperationsFinal DecisionAMartin, Michael (CAISO)Normal5/26/2022 IC: 1
    RC: 0
    1428Contract management enhancement updates for modifications and re-studies for serial projectsGenerator Interconnection ProceduresFinal DecisionCJordan, Jill (CAISO)Normal5/26/2022 IC: 0
    RC: 0
    1427Updated BPM for settlements and billing to accommodate aligning with annual FERC settlement process defined in charge codes 550 and 551 FERC fee settlementSettlements and BillingFinal DecisionAPeacock, Bonnie (CAISO)Normal5/26/2022 IC: 0
    RC: 0
    1426Update configuration guides to support short-long start unit definitions update initiativeSettlements and BillingFinal DecisionAPeacock, Bonnie (CAISO)Normal5/26/2022 IC: 0
    RC: 0
    1425Updated charge code pre calc metered subsystem deviation quantity to capture spin/non-spin instructed imbalance energy under scenarios where the resource was exceptionally dispatched in a non-contingency intervalSettlements and BillingFinal DecisionBPeacock, Bonnie (CAISO)Normal5/26/2022 IC: 0
    RC: 0
    1424Short-long start definitions updateReliability RequirementsFinal DecisionCSchimschal, Melanie (CAISO)Normal5/26/2022 IC: 0
    RC: 0
    1423Contract management 2021 updatesReliability RequirementsFinal DecisionCSchimschal, Melanie (CAISO)Normal5/26/2022 IC: 0
    RC: 0
    1422Updated multiple BPM configuration guides for charge code 6045 over and under scheduling western energy imbalance market settlement and 6046 over and under scheduling western energy imbalance market allocation to accommodate MIAF 2021-100Settlements and BillingFinal DecisionBPeacock, Bonnie (CAISO)Normal5/26/2022 IC: 0
    RC: 0
    1421Updated multiple BPM configuration guides to accommodate invoicing issues discovered during functional testing of shortfall charge codes that have never been run in settlements production since their inception.Settlements and BillingFinal DecisionAPeacock, Bonnie (CAISO)Normal5/26/2022 IC: 0
    RC: 0
    1420Eliminate the use of the least squares methodology for allocating deliverabilityGenerator Interconnection and Deliverability Allocation ProceduresFinal DecisionBWilson, Daune (CAISO)Normal5/26/2022 IC: 0
    RC: 0
    1419Updated charge code 6456 to implement changes related to the Tariff clarification filingSettlements and BillingFinal DecisionBPeacock, Bonnie (CAISO)Normal5/26/2022 IC: 0
    RC: 0
    1417Updating section 6.1.5.1 title to "Notifying the CAISO and affected Participating TO(s) for a study“ and adding process details and links to associated documentsGenerator Interconnection and Deliverability Allocation ProceduresFinal DecisionAWright, Linda (CAISO)Normal5/26/2022 IC: 0
    RC: 0
    Total No. of Proposed Revision Requests = 1378
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