RSS Feed for Proposed Revision Request - 1661

PRR - 1661

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Impact Analysis for PRR - 1661

-By Madrigal, Radha on Monday, March 2, 2026 9:42:44 AM

Initial Comment for PRR - 1661

Description: Please see attached comments from Southern California Edison.
-By John Diep (Southern California Edison) on Tuesday, March 17, 2026 1:16:11 PM

Initial Comment for PRR - 1661

Description: The CAISO describes this PRR as introducing a new “Terminal Condition” feature to ensure that a resource’s minimum down time is honored in the Real-Time Market if a resource’s minimum down time is exactly equal to the time between a scheduled shut down and the next Day-Ahead Market award for that resource. The Six Cities have not identified a concern with the concept described in the PRR, but the example included in the PRR is confusing and raises questions. First, the PRR refers to Long-start resources, but the example involves a resource that does not meet the definition of a Long-Start resource, raising a question about the intended scope of the PRR. The definition of Long Start resource is a cycle time greater than 255 minutes or 4.25 hours, and the example involves a resource with a minimum down time of 4 hours. Second, the illustrative example involves whole hourly amounts. If the minimum down time of a resource equals 4.25 hours, it is not clear whether the binding shut down provided in the PRR would occur at 12:45 in the Real-Time optimization or at 12:00 or 13:00 in the Day-Ahead schedule. The Six Cities request that the CAISO clarify the example and the application of the PRR.
-By Bonnie Blair (Cities of Anaheim, Azusa, Banning, Colton, Pasadena, and Riverside, CA) on Tuesday, March 17, 2026 2:28:10 PM

Announcement for PRR - 1661

Description: We have posted an attachment with the ISO's response to the initial comments received for this PRR.
-By Madrigal, Radha on Wednesday, March 18, 2026 11:23:08 AM

Recommendation for PRR - 1661

Proposed Language:

Approve with corrections and clarification received

Apparent Requirement: NA
Action: Approve the BPM PRR as modified.
Effective Date: 05/01/2026
Other Actions: NA