​​​

Proposed Revision Request Detail Help
PRR Life Cycle*****Stakeholder Meeting on Recommendation****
PRR Details
PRR #
1674
Title Emergency settlement fixes for high priority variances
Date Submitted 5/22/2026 1:31 PM
PRR Category B
Priority Emergency
Owner Ahmadi, Massih (CAISO)
Status Stakeholder Meeting on Recommendation
Status End Date 7/15/2026 11:59 PM
Related BPM Settlements and Billing
BPM Section Attached are the four charge code configuration guides associated with this Emergency PRR. The impacted charge codes are: 64600 FMM Instructed Imbalance Energy EIM Settlement, 8080 Resource Sufficiency Evaluation Settlement, PC Real Time Price, and PC Wheel Export Quantity.
RSS Subscribe
Existing Language
​See attached charge code configuration guides.
Proposed Language
​See attached charge code configuration guides.

​​

Reason For Revision
This emergency PRR captures settlements changes associated with high priority variances from implementation of the day-ahead market enhancements and extended day-ahead market initiatives. 
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

Identification of the authorship of comments

Comments were received from Cities of Anaheim, Azusa, Banning, Colton, Pasadena, and Riverside, CA.
Action

Approve the BPM PRR as submitted

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

The ISO proposes an effective date of 5/1/26 for the BPM revisions
Other recommended actions

N/A
Announcements
No Announcements has been posted for this PRR.
Impact Analysis
Emergency PRR 1674 Impact Analysis Form_05222026.doc    
Notes:
Initial Comments
Charge Code 64600:  Given the title of the Charge Code (reference to FMM settlement) and the revisions to the formulas shown in Sections 3.6.9 and 3.6.10, it appears to the Six Cities that multiple references throughout the Charge Code to “5M” or “5MFMM” should either be deleted or changed to “FMM” for clarity.  The Six Cities have identified such references in Sections 3.4 Row 1 (p. 6); 3.5 Row 2 (p. 7); 3.6.1 and 3.6.2 (p. 8); 3.6.7 (p. 9), 3.6.9, 3.6.10, and 3.7 Rows 1 and 2 (p. 10); and 3.7 Rows 8 and 9 (p. 11).
6/16/2026 3:39 PM
Logged By - Meg McNaul (Six Cities)
---------------------------------------------
This comment is conflating the Fifteen Minute Market vs the frequency of calculation. Thank you
6/18/2026 8:55 AM
Responded By - Ahmadi, Massih (CAISO)
Recommendation Comments
No Recommendation Comments available for this PRR.
Attachments