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Proposed Revision Request Detail Help
PRR Life Cycle*****Stakeholder Meeting on Recommendation****
PRR Details
PRR #
1662
Title Updating settlement configuration guides for day-ahead market enhancements, extended day-ahead market, and California ISO's balancing authority area participation in the extended day-ahead market
Date Submitted 2/26/2026 2:57 PM
PRR Category C
Priority Normal
Owner Ahmadi, Massih (CAISO)
Status Stakeholder Meeting on Recommendation
Status End Date 4/14/2026 11:59 PM
Related BPM Settlements and Billing
BPM Section 139 Settlements BPMs and 2 Attachments F
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Existing Language

See attached.​

Proposed Language

See attached.

Reason For Revision

All impacted charge code configuration guides have been updated to prepare for the implementation of the following initiatives: Day-Ahead Market Enhancements (DAME), Extended Day-Ahead Market (EDAM), and CAISO BAA's participation in EDAM. 

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 by Bonnie Blair on Behalf of the Cities of Anaheim, Azusa, Banning, Colton,
Pasadena, and Riverside, California (“Six Cities”)
Action

Approve the BPM PRR as modified.

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

There are system changes associated with this PRR. The system changes are planned for implementation by 4/30/2026.
Priority and rank for any BPM PRR requiring a CAISO system change

Proposed effective date(s) of the BPM PRR

Production Activation date is 5/1/2026
Other recommended actions

The ISO does not recommend any other actions on this BPM PRR.
Announcements
We have posted the ISO's reply to initial comments received as an attachment to the PRR.
Posted On - 4/2/2026 5:11 PM
This PRR includes an Excel file listing all impacted configuration guides and attachments, along with a ZIP file containing the individual documents. These configuration guides have been locked for the EDAM and DAME implementations.

Any identified variances are being tracked and managed through the draft technical documents available on the Release Planning site under “Settlements release – DAME and EDAM incremental updated technical documents.” These draft technical documents will reflect version numbers higher than 6.0.
Posted On - 3/2/2026 10:07 AM
Impact Analysis
PRR Impact Analysis Form 1662.doc    
Notes:
Initial Comments
We have received the following written comments from Kyle Grousis-Henderson on behalf of CDWR on 3/17/26:
These are the comments that the California Department of Water Resources – State Water Project (CDWR-SWP) would like to submit for PRR 1662.

1. CDWR-SWP would like to know if the following Day Ahead CRR charge codes: CC6700, CC6701, CC6706, CC6790, and CC6791, would include DAME settlements of the IR MCC.  Although it looks like the current DAME BPM has language to address that CC6700 and CC6790 would include the DAME IR MCC settlement, CDWR-SWP did not find anything that mentions how the IR MCC would affect CC6701, CC6706, and CC6791. 

2. CDWR-SWP would like that CAISO brings clarification if, after the implementation of DAME, the DA CRR credit requirement would include the DAME IR MCC component.  If the answer to the previous statement is Yes, then CDWR-SWP would like to know what rule would guide the DAME congestion path value that CAISO will use to calculate the DAME component of the DA CRR Credit requirement.  The current calculation of the DA CRR Credit requirement uses the 36-month congestion path value; however, this data would not be available for DAME at the time of DAME implementation. Furthermore, with the implementation of IR, how will this DAME implementation affect the Credit Requirement? Will IR implementation increase the Credit Requirement, or keep it maintained at the same level as now for LSEs?
3/17/2026 4:14 PM
Logged By - Madrigal, Radha (CAISO)
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Thank you for your comments. We are working on your response and plan to submit by COB April 3rd, 2026.
3/30/2026 10:40 AM
Responded By - Ahmadi, Massih (CAISO)
Comments on PRR 1662 Charge Codes(200928433.3).pdf    
3/17/2026 2:42 PM
Logged By - Bonnie Blair (Cities of Anaheim, Azusa, Banning, Colton, Pasadena, and Riverside, CA)
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Thank you for your comments. We are working on your response and plan to submit by COB April 3rd, 2026.
3/30/2026 10:41 AM
Responded By - Ahmadi, Massih (CAISO)
Recommendation Comments
CAISO EDAM - DAME Implementation PRR 1662 Settlements - Vistra.pdf    
We have received written comments from Cathleen Colbert on behalf of Vistra on 4/14/26. Please see attached.
4/15/2026 9:02 AM
Logged By - Madrigal, Radha (CAISO)
We have received the following comments from Kyle Grousis-Henderson on behalf of CDWR on 4/13/26:

These are the comments that the California Department of Water Resources – State Water Project (CDWR-SWP) would like to submit for PRR 1662.

A. On May 1st when DAME starts up, what will be the charge codes, pertaining to the CAISO BAA, showing the following DAME CRR IR MCC settlement: A.1. the IR MCC settlement = IR MCC at the sink minus the IR MCC at the source, and A.2. the IR MCC de-rates?
 
B. The current DA CRR Settlements includes five charge codes strictly related to the DA CRR MCC settlement: CC 6700, CC6701, CC6706, CC6790, and CC6791.  Are Market Participants expected to find formulas for calculating the corresponding IR MCC settlements within these charge codes?
 
C. Can Market Participants view IR MCC within their settlements reports now during Parallel Operations before the May 1 implementation, or only during May 1 deployment.
4/13/2026 2:42 PM
Logged By - Madrigal, Radha (CAISO)
Attachments