Proposed Revision Request Detail Help
PRR Life Cycle****Recommendation Comment*****
PRR Details
PRR #
1584
Title Update configuration guide for resource adequacy availability incentive mechanism pre-calc to fix limited energy storage resource adequacy generic availability and flexible obligation calculations issue
Date Submitted 8/15/2024 9:52 AM
PRR Category B
Priority Normal
Owner Ahmadi, Massih (CAISO)
Status Recommendation Comment
Status End Date 10/15/2024 11:59 PM
Related BPM Settlements and Billing
BPM Section The following BPM and its versions are subject to the current PRR:

CG PC RA Assessment Incentive Mechanism v5.10.0a (update end date only)
CG PC RA Assessment Incentive Mechanism v5.10.5 (new in-between version)
CG PC RA Assessment Incentive Mechanism v5.11 (terminate)
CG PC RA Assessment Incentive Mechanism v5.11.1 (new replaces v5.11)
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Existing Language

​See BPM attached to this PRR

Proposed Language

See BPM attached to this PRR ​

Reason For Revision

​

CAISO received disputes with respect to Limited Energy Storage Resources (LESR) generic and flexible Resource Adequacy Assessment Incentive (RAAIM) assessments on two separate occasions and as separate issues.

 

For generic resource adequacy (RA), research showed some resources are available for it’s negative capacity range and such calculation used to satisfy generic obligation. This conflicts with the fact that the most any resource can provide for generic availability is its Pmax and should involve only the positive capacity range, as it has to be generation not consumption.

 

For flexible RA obligation, it was found that for LESRs, and any resource with a potential negative capacity range for that matter, the original flex RA obligation is being restricted in Settlements to positive range only. This is incorrect since the full range (negative to positive) capacity are treated for awards of flexible obligation.

 

The successor charge codes CC 8830 (Monthly RAAIM Settlement) and CC 8831 (Monthly RAAIM Allocation) will be impacted.

 

To correct this Settlements configuration issue, a retrospective fix is to be deployed around calendar day 10/30/2024 and settle charge codes for Trade Dates starting 3/1/2023 for T+21M. In accordance with Settlements publishing timeline, various later trade dates can eventually be covered through earlier run cycles (T+11M, T+70B, and so on).
Click here to view the Recommendation Details for this PRR
BPM PRR Submitter

Ahmadi, Massih (CAISO)
Modified BPM language proposed by the PBM Chnage Management Coordinator

​Approve as submitted.

Identification of the authorship of comments

No comments were received.
Action

Approve the BPM PRR as submitted

N/A
Statement of apparent requirements of the BPM PRR

This BPM PRR contains basic language changes.
Priority and rank for any BPM PRR requiring a CAISO system change

There are system changes associated with this PRR. The system changes are planned for implementation on 3/1/2023 on a normal basis.
Proposed effective date(s) of the BPM PRR

The ISO proposes an effective date of 3/1/2023 for the BPM revisions.
Other recommended actions

The ISO does not recommend any other actions on this BPM PRR.
Announcements
No Announcements has been posted for this PRR.
Impact Analysis
Impact Analysis not available.
Initial Comments
No Initial Comments available for this PRR.
Recommendation Comments
No Recommendation Comments available for this PRR.
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