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Proposed Revision Request Detail Help
PRR Life Cycle*****Stakeholder Meeting on Recommendation****
PRR Details
PRR #
1687
Title Emergency settlement release to fix high priority settlement variances
Date Submitted 7/4/2026 11:01 AM
PRR Category B
Priority Emergency
Owner Ahmadi, Massih (CAISO)
Status Stakeholder Meeting on Recommendation
Status End Date 9/16/2026 11:59 PM
Related BPM Settlements and Billing
BPM Section The following BPM and its versions are subject to the current PRR:

there are 8 charge codes associated to this emergency PRR:
charge code 384 - high voltage wheeling revenue payment_5.4.1
charge code 6473 - convergence bidding real time energy congestion and loss settlement_6.0.2
charge code 8076 - day ahead imbalance reserve up tier 1 allocation_6.0.2
charge code 8086 - day ahead imbalance reserve down tier 1 allocation_6.0.2
charge code 64750 - real time uninstructed imbalance energy EIM settlement_6.0.2
pre-calculation - real time energy quantity_6.0.2
pre-calculation - wheel export quantity_5.7.5
pre-calculation - wheel export quantity_5.8.2
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Existing Language

​See BPM attached to this PRR​

Proposed Language

See BPM attached to this PRR​​

Reason For Revision

This Emergency PRR captures Settlements changes associated to fixes for high priority variances. These changes were implemented​ on 7/9/2026.​​

Click here to view the Recommendation Details for this PRR
BPM PRR Submitter

Ahmadi, Massih (CAISO)
Modified BPM language proposed by the PBM Chnage Management Coordinator

​The ISO proposes additional modified BPM language beyond that proposed in the BPM PRR.​

Identification of the authorship of comments

Comments were received from Southern Cities.
Action

Approve the BPM PRR as modified.

Approve the BPM PRR as modified.
Statement of apparent requirements of the BPM PRR

This BPM PRR contains basic language changes.
Priority and rank for any BPM PRR requiring a CAISO system change

There are system changes associated with this PRR. The system changes are were implemented on 5/1/26 on emergency basis.
Proposed effective date(s) of the BPM PRR

5/1/26
Other recommended actions

Announcements
No Announcements has been posted for this PRR.
Impact Analysis
PRR 1687 - Emergency PRR Impact Analysis Form_07082026 (2).doc    
Notes:
Initial Comments
PRR 1687 - 082726_CAISO_Response_To_Comments_PRR1687.docx    
 CAISO Response: We have included section 4 in the 6.0.2 for the document history in RT Energy PC 6.0.2.
 CAISO Response: On the reason for our numbering system. We follow our procedure. The 5.7 and 5.8 indicates difference in effectivities (start and end dates, and the last number in the 5.7.5 and 5.8.2 means we are patching for the same effectivities of 5.7 or 5.8.  As there is no 5.7.4 and there is immediate jump to 5.7.5, it is meant to split the effectivities (a different start than 5.7 but before 5.8) between 5.7 and 5.8. Any different start date after 5/1/2026 (meant for 5.8), will become 5.9 and so on.
~Massih Ahmadi
8/27/2026 11:57 AM
Logged By - Williamson-Duffney, Joseph (CAISO)
The Six Cities have comments on three Pre-Calculations included in PRR 1687, as follows:
In PC RT Energy Quantity, v. 6.0.2, the document history has not been updated in Section 4. 
Two sets of proposed revisions to PC Wheel Export Quantity, identified as v. 5.7.5 and v. 5.8.2, are included in PRR 1687.  The document history for v. 5.7.5 appears to be incomplete and to reflect changes dating as far back as 11/1/24.  While v. 5.8.2 updates the document history, the numbering is not sequential, and the relationships between the changes in the two version are unclear.  The Six Cities request an explanation for the gap in numbering and the relationships between the two versions.
8/18/2026 3:55 PM
Logged By - bblair@thompsoncoburn.com (CAISO)
Recommendation Comments
No Recommendation Comments available for this PRR.
Attachments