​​​

Proposed Revision Request Detail Help
PRR Life Cycle*********Closed
PRR Details
PRR #
1650
Title New Market Automation to prevent Market Disruptions in RTD and STUC
Date Submitted 9/29/2025 2:44 PM
PRR Category B
Priority Normal
Owner Martin, Michael (CAISO)
Status Closed
Status End Date 11/17/2025 11:59 PM
Related BPM Market Operations
BPM Section Section 7.10.4 Procedures in the Event of Failure of the RTUC/RTED Market Processes.
RSS Subscribe
Existing Language
 

​See Attached​

Proposed Language
 

​See Attached​

Reason For Revision
 

Introduction of new RTD and STUC market automated logic that allows the market to identify resource constraints that will lead to a market disruption​.  

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

Martin, Michael (CAISO)
Modified BPM language proposed by the PBM Chnage Management Coordinator

​​Approve as submitted​

Identification of the authorship of comments

NA
Action

Approve the BPM PRR as submitted

NA
Statement of apparent requirements of the BPM PRR

NA
Priority and rank for any BPM PRR requiring a CAISO system change

NA
Proposed effective date(s) of the BPM PRR

Normal Process
Other recommended actions

Answered questions from Bonnie Blair, see PRR detail
Click here to view the Final Decision for this PRR
Final Decision

Proceed with modified example per request
Stakeholder Comment

NA

Effective Date

Action

Adopt the recommendation as modified

NA
Announcements
Please see CAISO's answer to SCE's question posted on 10/28/2025
Posted On - 10/30/2025 4:20 PM
Impact Analysis
Impact Analysis not available.
Initial Comments
It would be most helpful to detail how the automated process will respond to each of the resource constraint examples.
10/13/2025 3:08 PM
Logged By - Bonnie Blair (Cities of Anaheim, Azusa, Banning, Colton, Pasadena, and Riverside, CA)
---------------------------------------------
The design of this enhancement replaces the RTD infeasible dispatch with the previous dispatch for only the specific  resource regardless of the specific type of constraint that may be causing this issue.  Market Quality we report and disccuss quarterly on the frequency and constraints for transparency.  Operators will monitor for patterns of specific resources causing issues and should a pattern emerge, Operations will reach out to the SC with assistence from the Customer Experience department.  
10/28/2025 3:29 PM
Responded By - Martin, Michael (CAISO)
Recommendation Comments
PG&E supports the CAISO's solution to address individual resources causing infeasibilities.
11/17/2025 4:11 PM
Logged By - Alan Meck (PG&E)
The Six Cities continue to have questions regarding the application of the automated process to the examples given in the PRR. 
The first example describes an infeasibility between the Base Schedule for one hour and a Base Schedule for the same resource for the following hour.  It is the Six Cities’ understanding that Base Schedules are submitted and subject to modification by EIM Entities.  How will the automated process operate with respect to the Base Schedules?  Will it hold the initial Base Schedule and reject the Base Schedule for the subsequent hour?  Will it omit both Base Schedules from the RTD optimization?  What notifications will be provided to the EIM Entity that submitted the Base Schedules?  Please clarify.
The second example describes an Exceptional Dispatch that directs an infeasible transition from one MSG configuration to another.  It is the Six Cities’ understanding that Exceptional Dispatches are entered manually by CAISO operators.  Will the automated process hold the resource at the initial configuration and override the transition directed by the Exceptional Dispatch, or will it simply reject the Exceptional Dispatch altogether?  What communications will occur with the CAISO operator that entered the Exceptional Dispatch?  Please clarify.
11/17/2025 7:19 AM
Logged By - Bonnie Blair (Cities of Anaheim, Azusa, Banning, Colton, Pasadena, and Riverside, CA)
Click here to view the Appeals for this PRR
Click on the '+' icon to submit a New Appeal

# of Appeals In Progress - 0
# of Appeals Closed - 0
# of Appeals Abandoned - 0
There are no Appeals on this PRR.
Attachments