Proposed Revision Request Detail Help
PRR Life Cycle*********Closed
PRR Details
Title To support energy imbalance market enhancements 2020, specifically symmetrical wheeling. Configuration changes to the energy imbalance market real time marginal losses offset.
Date Submitted 11/19/2020 2:19 PM
PRR Category A
Priority Emergency
Owner Corona, Brenda (CAISO)
Status Closed
Status End Date 2/16/2021 11:59 PM
Related BPM Settlements and Billing
BPM Section CG CC 69850 Real Time Marginal Losses Offset EIM
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Existing Language
See BPM attached to this PRR
Proposed Language
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Reason For Revision

The proposed enhancement will settle all Base ETSR schedule deviations at an EIM BAA intertie at the same SP-Tie LMP that would have been used to settle TID schedule deviations with that EIM BAA at that intertie if the EIM BAA at the other end were a non-EIM BAA.


Updated EIM Real Time Marginal Losses Offset to accommodate settlements changes regarding new pricing locations.


The effective date of the changes is 1/1/2021.

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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.

Approve the BPM PRR as modified.

Per posted Announcement from 12/14/20
Effective date changed to 2/1/2021 as communicated in the Release User Group.
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 12/17/2020 on a normal basis.
Proposed effective date(s) of the BPM PRR

The ISO proposes an effective date of 2/1/2021 for the BPM revisions.
Other recommended actions

The ISO does not recommend any other actions on this BPM PRR.
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Final Decision

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

No comments submitted.

Effective Date


Adopt the recommendation as originally issued

Updating effective date to 2/1/2021 with associated PRR 1293.
Posted On - 12/14/2020 2:01 PM
Updated the title, to match with Settlement User Communication, this PRR is associated with PRR 1293
Posted On - 11/23/2020 11:16 AM
Impact Analysis
Initial Comments
No Initial Comments available for this PRR.
Recommendation Comments
No Recommendation Comments available for this PRR.
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# of Appeals Abandoned - 0
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