Proposed Revision Request Detail Help
PRR Life Cycle*********Closed
PRR Details
PRR #
1415
Title Change to short and long start definitions
Date Submitted 3/17/2022 8:29 AM
PRR Category A
Priority Normal
Owner Martin, Michael (CAISO)
Status Closed
Status End Date 6/14/2022 11:59 PM
Related BPM Market Operations
BPM Section Numerous references throughout the BPM
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Existing Language
 
See attached
Proposed Language
 
See attached
Reason For Revision
This update is to align the market applications and business process with the revised Tariff definitions of short and long start resources. The medium start definition is removed and rolled into the short start definition. The purpose of this initiative is to align the market applications and business processes with the revised tariff definitions of Short and Long Start resources.
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BPM PRR Submitter

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

See attached language to PRR

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

NA
Other recommended actions

NA
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Final Decision

Approve original language
Stakeholder Comment

Responded to SRP's concerns

Effective Date

6/14/2022
Action

Adopt the recommendation as originally issued

NA
Announcements
No Announcements has been posted for this PRR.
Impact Analysis
Impact Analysis not available.
Initial Comments
In Section 6.4.7, footnote 5 states that the cycle time is the “start up time plus minimum run time from the MasterFile”.  From a definition standpoint, SRP’s understanding is that this is correct.  However, based on our previous comments during the initiative, CAISO clarified that the market software will use the startup time that is relevant based on the cooling time applicable for that market run.  This could make resources with long cold startup times fall into the Short Start category in the software if the hot startup is significantly shorter.  SRP suggests clarifying this in the footnote or a separate paragraph.  This could change which units would be able to be committed or financially binding in the Real Time Market (RTM).  It would also be helpful to include similar information regarding transitions in this section.

SRP also requests that the CAISO clarify if Section 1.4 should reference “cycle times” rather than “Start-up times” in the statement, “At the top of each Trading Hour, immediately after the FMM and the RTUC for the same interval is completed, CAISO performs an approximately five-hour STUC run using SCUC and the CAISO Forecast of CAISO Demand to commit Short Start Units with Start-Up Times greater than the Time Horizon covered by the FMM.”
4/12/2022 4:01 PM
Logged By - Jerret Fischer (SRP)
Recommendation Comments
The project team met with Christy Monahan (SRP) on April 28 and confirmed the BPM language is accurate and complete. 
4/28/2022 1:04 PM
Logged By - Martin, Michael (CAISO)
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