Proposed Revision Request Detail Help
PRR Life Cycle*********Closed
PRR Details
PRR #
1178
Title Update the pre-calculation MSS deviation penalty quantity configuration to properly calculate the MSS expected imbalance energy as per the metered subsystem agreement definition and configuration to accommodate the changes as per MIAF 2019-26 MSSA gaps
Date Submitted 8/19/2019 3:40 PM
PRR Category B
Priority Normal
Owner Corona, Brenda (CAISO)
Status Closed
Status End Date 11/12/2019 11:59 PM
Related BPM Settlements and Billing
BPM Section CG MSS Deviation Penalty Quantity Pre calculation v5.5.1 and v5.6
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Existing Language
See BPM attached to this PRR
Proposed Language
See BPM attached to this PRR
Reason For Revision

BPM – MSS Deviation Penalty Quantity Precalculation 5.5.1

Multiple disputes have been submitted by NPCA regarding the calculation of their forced outage quantity.  In our current configuration, settlements is not differentiating between planned and forced outage.  Settlements also uses SLIC energy to account for outage quantities.  In some cases when a resource is in forced outage, a portion of their outage quantity is qualified as negative OE and not SLIC energy.


BPM – MSS Deviation Penalty Quantity Precalculation 5.6

MIAF 2019-26 MSSA Agreement Gaps requires settlements to identify market disruption intervals and exempt these intervals from any MSS LF Deviation Penalty assessments.

 

 

The planned production deployment date is 10/25/2019, and the effective dates are as follows:
5.5.1 – 1/1/2018 – 10/31/2019
5.6 – 11/1/2019 – Open

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

Corona, Brenda (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

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 10/30/2019 on a normal basis.
Proposed effective date(s) of the BPM PRR

The ISO proposes an effective date of 11/1/2019 for the BPM revisions.
Other recommended actions

The ISO does not recommend any other actions on this BPM PRR.
Click here to view the Final Decision for this PRR
Final Decision

The ISO will adopt the BPM change as proposed in the recommendation.
Stakeholder Comment

10/8/19 comments submitted by NCPA; 10/15/19 CAISO responded.

Effective Date

11/1/2018
Action

Adopt the recommendation as originally issued

None
Announcements
No Announcements has been posted for this PRR.
Impact Analysis
IA - Impact Analysis Form for MSS LF Deviation Quantity PC.doc    
Notes:
Initial Comments
No Initial Comments available for this PRR.
Recommendation Comments
The  ISO appreciates NCPA’s response.  Based upon NCPA’s disputes, NCPA MSSA Agreement, and the ISO tariff, Settlements in conjunction with ISO Legal and Contracts groups have determined that the proposed settlement modifications will resolve NCPA‘s disputes. 
10/15/2019 10:33 AM
Logged By - Corona, Brenda (CAISO)
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The ISO also understands NCPA’s concern regarding the timing of when forced outages are submitted and accepted in relation with the RTD market run, however settlements will process and assess forced outages in the same manner that the RTD market consumes the outage information from OMS to ensure consistency throughout the market and post market solutions. 

Since the settlement modifications were prompted by multiple NCPA disputes relating to the qualification of the forced outage quantity currently represented by SLIC energy, In order to resolve these open disputes the ISO modifications will be implemented a retroactive fix.  Furthermore, this fix is ensuring alignment of the settlements configuration with the MSSA Agreement.
10/15/2019 10:37 AM
Responded By - Corona, Brenda (CAISO)
NCPA would like to thank the ISO for making these changes.

We believe that change 5.5.1 is an incremental improvement only, and we have already identified cases where this change will most likely not function as intended. A permanent change that would go a long way toward solving the root issue would be to use actual OMS outage data, for approved outages, from the incident start time, normalized to five-minute clock intervals. Failing a change like the one described, NCPA will most likely continue to submit disputes on the MSS Deviation Penalty calculations based on outages.

NCPA is grateful for the change outlined in 5.6. We believe this is a sound change that will save many unnecessary disputes and consequent associated labor  on both sides. Thank You!

With the exception of the previous comment made regarding the use of OMS, the only recommendation NCPA would make would be to make both these changes prospective. We just suffered through a whole year of recalculations with the May 2019 configuration, which, in some cases ameliorated and in others exacerbated some of the problems we have experienced. It is unclear why we have to open the books to more changes once again.

Thank You!

NCPA Settlements
10/8/2019 5:19 PM
Logged By - NCPA_Settlements (Northern California Power Agency)
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