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Proposed Revision Request Detail Help
PRR Life Cycle*********Closed
PRR Details
PRR #
1660
Title Clarification of variable energy resource persistence forecasting
Date Submitted 1/21/2026 1:06 PM
PRR Category B
Priority Normal
Owner Martin, Michael (CAISO)
Status Closed
Status End Date 4/14/2026 11:59 PM
Related BPM Energy Imbalance Market
BPM Section 11.7.2.1 VER Persistence Forecasting
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Existing Language

​See Attached

Proposed Language

​See Attached​

Reason For Revision

The PRR adds a new sub-section on variable energy resource (VER) Persistence Forecasting that describes its high-level design, benefits and steps Western Energy Imbalance Market Balancing Authority Areas may take to elect the persistence methodology for their VER resource forecasting​. ​

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

The ISO proposes no modified BPM language beyond that proposed in the BPM 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

Approve as submitted.
Click here to view the Final Decision for this PRR
Final Decision

Approve as submitted
Stakeholder Comment

N/A

Effective Date

3/31/2026
Action

Adopt the recommendation as originally issued

NA
Announcements
No Announcements has been posted for this PRR.
Impact Analysis
Persistence PRR 1660 Impact Analysis Form.doc    
Notes:
Initial Comments
No Initial Comments available for this PRR.
Recommendation Comments
No Recommendation Comments available for this PRR.
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# of Appeals Closed - 0
# of Appeals Abandoned - 0
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Attachments