Proposed Revision Request Detail Help
PRR Life Cycle*********Closed
PRR Details
PRR #
1498
Title Assistance energy transfer
Date Submitted 3/30/2023 2:11 PM
PRR Category C
Priority Emergency
Owner Martin, Michael (CAISO)
Status Closed
Status End Date 8/15/2023 11:59 PM
Related BPM Energy Imbalance Market
BPM Section 11.3.2 Resource Sufficiency
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Existing Language
​See Attached
Proposed Language
See Attached​
Reason For Revision
Added section introducing the Assistance Energy Transfer (AET) concept as part of the Resource Sufficiency Evaluation Enhancement (RSEE) Phase 2 Project.  Assistance Energy Transfers allow WEIM entites to provide reliability benefits to balancing authority areas (BAAs) deficient in capacity or flexibility. BAAs that have voluntarily opted into receiving assistance energy transfers will also be subject to an ex-post surcharge (the “EIM Assistance Energy Transfer Surcharge”) when they fail the RSE. 
 
Effective no sooner than 7/1/2023 
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

​Approve the PRR as modified

Identification of the authorship of comments

Action

Approve the BPM PRR as modified.

Statement of apparent requirements of the BPM PRR

Please see CAISO responses to comments
Priority and rank for any BPM PRR requiring a CAISO system change

Proposed effective date(s) of the BPM PRR

7/1/2023
Other recommended actions

Click here to view the Final Decision for this PRR
Final Decision

Approved as originally submitted
Stakeholder Comment

Initial concerns were addressed and received support (but with noted concerns)

Effective Date

7/1/2023
Action

Adopt the recommendation as originally issued

Announcements
Please see Assistance Energy Transfer BPM Response final (doc) added to this PRR
Posted On - 5/8/2023 1:25 PM
Please note the CAISO has changed this PRR to an Emergency status with an effective date of June 1, 2023 to remain consistent with the RSEE Phase 2 Project.  This PRR will remain in the Initial Comment status and will be discussed further at the next PRR Change Management meeting.  Additional comments are also welcome. 
Posted On - 5/4/2023 10:02 AM
Impact Analysis
PRR 1498 Impact Analysis Form.doc    
Notes:
Initial Comments
PRR 1498 Comments - SDGE 6-14-23.docx    
CAISO received written comments for PRR 1498 for SDGE.
6/19/2023 7:08 AM
Logged By - Hines, Nicole (CAISO)
PGE Follow-up Comments_BPM PRR 1498.docx    
Please see PG&E's comments attached.
6/14/2023 4:47 PM
Logged By - Igor Grinberg (Pacific Gas and Electric Company)
SCE BPM PRR 1498 Follow-up Response.docx    
See SCE's comments attached.. 
6/13/2023 9:18 AM
Logged By - John Diep (Southern California Edison)
SDG&E appreciates the opportunity to comment on PRR 1498 and believes that the Western Energy Imbalance Market (WEIM) Resource Sufficiency Evaluation (RSE) is moving in the right direction by creating an avenue to address RSE failures with financial penalties rather than physical penalties. However, SDG&E is concerned that CAISO may be jumping into the Assistance Energy Transfer (AET) program without first consulting stakeholders. SDG&E has two primary concerns: 1) Cost and 2) the interaction between AET and LPT exports. With respect to the cost, stakeholders could better assess the cost if CAISO would let the AET program run for a year and use the data to produce an estimate of the cost impact. With respect to the interaction between AET and LPT exports, as SDG&E understands it, if an LPT export clears either the Day-Ahead Market (DAM) or the Hour-Ahead Scheduling Process (HASP), then that export will be locked in when WEIM evaluates the RSE for each Balancing Authority Area (BAA). If CAISO runs into an unexpected contingency between Day-Ahead (DA) and Real-Time (RT), then CAISO could fail the WEIM RSE and trigger the $1,000/MWh penalty price, but the LPT exports might not be cut until the Fifteen Minute Market (FMM) begins to run, or possibly until the next HASP run. As such, CAISO could be paying $1,000/MWh to support LPT exports where those exports are supposed to reflect an economically efficient sale of power. SDG&E therefore proposes that CAISO should run the program for a year in order to gather data on what the estimated cost will be. At that point it should run a stakeholder initiative to engage its Load Serving Entities (LSEs) on the question of whether or not CAISO should opt into the AET program. This would also give CAISO time to address the problem of how AET interacts with LPT exports.
4/18/2023 8:27 PM
Logged By - Vanessa Newmarker (SDG&E)
CPUC Energy Division Staff Comments on BPM PRR 1498.docx    
4/18/2023 7:33 PM
Logged By - Michele Kito (CPUC)
PG&E appreciates the opportunity to provide comments on Proposed Revision Request (PRR) 1498 related to Assistance Transfer Energy that will be part of the Resource Sufficiency Evaluation (RSE) within the Western Energy Imbalance Market.  PG&E requests that CAISO provide additional clarity in the Business Practice Manual about how the CAISO foresees the CAISO Balancing Area Authority (BAA) opt-in / opt-out criteria working in a real-world setting.  Before moving forward, the CAISO should provide a few examples within the BPM describing how specific resources and products that did not count towards the RSE failure would result in the reduction of WEIM transfers due to back up generators, strategic reserves, Demand Response, Reliability Demand Response Resources, etc.  Including specific examples will help entities, such as PG&E, determine if in fact the proposed language for assistance energy will ensure it used as a last resort and only a last resort, both physically and financially.  It is vitally important that load-serving entities with the CAISO BAA understand the implications of what the CAISO is proposing, whereas currently it is not clear based on the current proposed language.
4/18/2023 4:19 PM
Logged By - Igor Grinberg (Pacific Gas and Electric Company)
Six Cities' Comments on PRR 1498_ Assistance Energy_draft language for WEIM BPM v1.docx    
Comments on behalf of the Cities of Anaheim, Azusa, Banning, Colton, Pasadena, and Riverside, California on PRR 1498
4/18/2023 8:25 AM
Logged By - Rebecca Shelton (Cities of Anaheim, Azusa, Banning, Colton, Pasadena, and Riverside, California)
SCE opposes BPM PRR 1498.  SCE believes that the language and criteria for ""opting in" and "opting out" of Assistance Energy should be completely removed from the BPM.  Any action taken that will impact rates should be included in the tariff and not the BPM.   SCE recommends the ISO include the following language in the BPM: Prior to deciding if the CAISO will utilize Assistance Energy, the CAISO will hold a stakeholder process to decide.  If the CAISO decides to utilize Assistance Energy, the opt-in and opt-out rules which, once adopted, will be included in the tariff.   SCE also recommends that CAISO run the Assistance Energy program (without opting-in) for at least a year, gather data, analyze it, and then re-engage CAISO BAA stakeholders.
4/17/2023 2:59 PM
Logged By - John Diep (Southern California Edison)
Recommendation Comments
No Recommendation Comments available for this PRR.
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