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Proposed Revision Request Detail Help
PRR Life Cycle*******Final Decision**
PRR Details
PRR #
1630
Title Update regarding generating units deliverability status
Date Submitted 5/6/2025 2:50 PM
PRR Category B
Priority Emergency
Owner Bogen, Melanie (CAISO)
Status Final Decision
Status End Date 8/12/2025 11:59 PM
Related BPM Reliability Requirements
BPM Section 6.1.3.4
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Existing Language

​​Please see attached redline.

Proposed Language

​Please see attached redline.​

Reason For Revision

​​​To align the BPM with the Tariff regarding Generating Units deliverability status.

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

Bogen, Melanie (CAISO)
Modified BPM language proposed by the PBM Chnage Management Coordinator

​Approve the BPM PRR as submitted​

Identification of the authorship of comments

Action

Approve the BPM PRR as submitted

Approve the BPM PRR as submitted
Statement of apparent requirements of the BPM PRR

N/A
Priority and rank for any BPM PRR requiring a CAISO system change

N/A
Proposed effective date(s) of the BPM PRR

Other recommended actions

N/A
Click here to view the Final Decision for this PRR
Final Decision

Approve the PRR as submitted.
Stakeholder Comment

N/A

Effective Date

7/28/2025
Action

Adopt the recommendation as originally issued

Announcements
No Announcements has been posted for this PRR.
Impact Analysis
PRR Impact Analysis Form.doc    
Notes:
Initial Comments
NCPA seeks clarification on the result of the changes proposed in PRR 1630 regarding Generating Units’ deliverability status. We understand the deletion to mean that CAISO will no longer eliminate or reduce deliverability rights as a result of a consecutive three-year period of becoming incapable of operating at the capacity level associated with its rated deliverability. As a result, a Generating Unit will retain deliverability, regardless of whether it demonstrates that it is actively engaged in the construction of replacement generation to be connected at the bus associated with the deliverability priority. 
NCPA requests for CAISO to withdraw PRR 1630 and instead proceed through a stakeholder initiative to provide clarity on this important issue.  NCPA relies on language from RR BPM 6.1.3.4 in its planning process, and further explanation and clarity is needed to ensure that deliverability is not inappropriately reduced. Moreover, further changes would be needed to ensure that the BPM and Tariff are consistent throughout—e.g., the BPM for Generator Management 13.1 refers to the struck language in the RR BPM, which would create further confusion.
6/17/2025 4:19 PM
Logged By - Mike Whitney (NCPA)
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The CAISO plans to address this policy more holistically with stakeholders in the future, both in the BPMs and the tariff. PRR 1630 is the direct result of FERC’s recent finding against the specific BPM provision, which is no longer tenable to maintain in the BPM.

https://www.caiso.com/documents/apr-29-2025-order-addressing-arguments-raised-on-rehearing-and-setting-aside-prior-order-in-part-saavi-v-caiso-cometa-energia-complaint-el24-92.pdf
6/23/2025 4:44 PM
Responded By - Bogen, Melanie (CAISO)
Recommendation Comments
No Recommendation Comments available for this PRR.
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