Comments on Submit EDAM BRS v1.6 Comments

Extended day-ahead market

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Comment period
Jan 29, 08:00 am - Mar 13, 05:00 pm
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Pacific Gas & Electric
Submitted 02/19/2026, 05:23 pm

Contact

Chunyu Luo (c1ld@pge.com)

1. Please provide the version of the EDAM BRS your comments apply to
Please specify the version of the BRS your comments apply to

EDAM v. 1.6

ISO response

Thank you for your questions, please find the answers below.

2. Please provide any questions or comments your organization may have regarding section 5 of the EDAM BRS.
When providing input in the text box below, please specify the BRQ(s) to which your comment or question refers. Please note that there are currently two companion initiatives for EDAM that will be implemented at the same time: 1) EDAM Implementation, which addresses the entire market framework for the EDAM footprint, and 2) EDAM ISO BAA Participations Rules, which applies specific operational and settlement participation rules to the EDAM market for the ISO BAA (‘CISO’). This document pertains to the former.

Below Question by PG&E:                                                                                       Section 5.14 – Manage CRA

  1. Is CRA Phase 1 going to be implemented for May 1, 2026? If not, can CAISO provide the timelines for when CRA Phase 1 will be implemented?
  2. Could CAISO clarify, if CRA phase 1 is not implemented on May 1, 2026, will the CRA settlement impacts for PacificCorp will be retroactively trued up once CRA is implemented or whether CRA – related settlement adjustment will only begin prospectively from the date CRA phase 1 goes live?

Section 5.15– Manage Settlements and Billing.

  1. For requirement 19540 and 19550, does “hourly quality” mean “hourly quantity” (Can CAISO confirm is it’s a typo)?

Section 5.16 – Reporting System (CMRI and OASIS)

  1. Will all the new and modified reporting requirements (CMRI/OASIS) mentioned in 5.16 be in production by 5/1/2026? Can CAISO please provide the list of new/edited reports that will be in production on 05/01/2026?

 Section 5.18 – WebOMS

  1. DAMBRQ22048b- Add Control area field BAA in the UI Contingency screen • Add Display BAA with associated contingency • Remove Sub control area field in Contingency UI screen. Question: This is a newly added requirement in EDAM V1.6. Will Market Participants have the opportunity to test this feature in the WebOMS Mapstage and Stage environment? If not, when does CAISO plan to deploy this feature for testing?

Section 5.12 Business Process: Manage GHG in DAM & RTM

  1. Are the 2 master file changes mentioned in BRQ17240 and BRQ17241 part of May 2026 release?

 

ISO response

 Section 5.14 – Manage CRA

  1. Is CRA Phase 1 going to be implemented for May 1, 2026? If not, can CAISO provide the timelines for when CRA Phase 1 will be implemented?
  2. Could CAISO clarify, if CRA phase 1 is not implemented on May 1, 2026, will the CRA settlement impacts for PacificCorp will be retroactively trued up once CRA is implemented or whether CRA – related settlement adjustment will only begin prospectively from the date CRA phase 1 goes live?

CAISO Response: Yes, the CRA scope covered in the EDAM BRS is on track to be implemented for May 1, 2026. CRA structured market sim is currently scheduled for mid-March, 2026.  Additional information will be provided during the DAME, EDAM, EDAM CAISO BAA PR Market Sim & Parallel Ops Meeting.

Section 5.15– Manage Settlements and Billing.

  1. For requirement 19540 and 19550, does “hourly quality” mean “hourly quantity” (Can CAISO confirm is it’s a typo)?

CAISO Response:  Yes, apologies for the typo, the BRQs should read “DA hourly quantity”.

Section 5.16 – Reporting System (CMRI and OASIS)

  1. Will all the new and modified reporting requirements (CMRI/OASIS) mentioned in 5.16 be in production by 5/1/2026? Can CAISO please provide the list of new/edited reports that will be in production on 05/01/2026?

CAISO Response: The complete list of new and impacted OASIS and CMRI reports can be found in the OASIS and CMRI Technical Specifications that can be found on the ISO Developer Portal.

 Section 5.18 – WebOMS

  1. EDAMBRQ22048b- Add Control area field BAA in the UI Contingency screen • Add Display BAA with associated contingency • Remove Sub control area field in Contingency UI screen. Question: This is a newly added requirement in EDAM V1.6. Will Market Participants have the opportunity to test this feature in the WebOMS Mapstage and Stage environment? If not, when does CAISO plan to deploy this feature for testing?

CAISO Response: Sorry for the confusion, EDAM Entities will still leverage the Market Impact Tab in WebOMS to manage contingencies. This functionality may be tested and validated by adding the contingency value in the Market Impact tab. We will remove this requirement from future iterations of the BRS to avoid confusion.

Section 5.12 Business Process: Manage GHG in DAM & RTM

  1. Are the 2 master file changes mentioned in BRQ17240 and BRQ17241 part of May 2026 release?

CAISO Response: These requirements are not needed until the WA state GHG program goes live, after May 1, 2026.

3. Please provide any questions or comments your organization may have regarding the remainder of the EDAM BRS
When providing input in the text box below, please specify the section your comment or question refers to.

General Question on Timelines:

  1. Could you clarify the timelines for what is included in the 05/01/2026 release and what has been postponed to a later date? The current scope is unclear for market participants. For example, BRQ11400 has moved to 8/1/2026 implementation. Is there anything else that are moving out of 5/1/2026 scope? 
ISO response

CAISO Response: Everything included in the EDAM BRS v.1.6 is scheduled for May 1, 2026, with two exceptions:

  1. Inter-SC trade requirements, which are scheduled for August 1, 2026 implementation.
  2. GHG Model requirements that are not needed until Washington State’s Greenhouse Gas Compliance program goes live

Any additional enhancements will be covered under a separate EDAM Enhancements initiative

4. Please provide any additional questions or comments you may have.
When providing input, limit your questions and comments to the EDAM BRS and the EDAM Initiative.

PGE
Submitted 02/11/2026, 10:56 am

Contact

Alina (A5D5@pge.com)

1. Please provide the version of the EDAM BRS your comments apply to
Please specify the version of the BRS your comments apply to

EDAM BRS Version 1.6

ISO response

Thank you for your questions. Please find the answers below. Please feel free to submit additional questions via the commenting tool.

2. Please provide any questions or comments your organization may have regarding section 5 of the EDAM BRS.
When providing input in the text box below, please specify the BRQ(s) to which your comment or question refers. Please note that there are currently two companion initiatives for EDAM that will be implemented at the same time: 1) EDAM Implementation, which addresses the entire market framework for the EDAM footprint, and 2) EDAM ISO BAA Participations Rules, which applies specific operational and settlement participation rules to the EDAM market for the ISO BAA (‘CISO’). This document pertains to the former.

1. DAM-BRQ07100PG&E Question: What do ITIEs stand for?

2.DAM-BRQ07105 and DAM-BRQ07113-PG&E Question: Can CAISO please help to explain how practical it is for the SCs to both submit and obtain third party approval by 8:00 am for DA as mentioned in the above BRQs? Can CAISO please elaborate more about the timing aspect for RA obligation reassignments in the 02/11 EDAM Interties Training?

3. DAM-BRQ07115 and DAM-BRQ07116 - PG&E Question: For how many years does the ISO intend to store and report data for CPUC /market monitor purposes?

4.DAM-BRQ07125 PG&E Question:1. Operation based question - Can CAISO clarify if an RA obligation is only partially reassigned because some resources are EDAM eligible and others are not, how are the remaining, non-reassigned MWs treated? Are those no EDAM MWs subject to RAAIM penalties, even if reassignment wasn’t possible? Question 2. More of a policy-based question: How does the market distinguish between system level MWs that should have been reassigned but were not, versus MWs that remain on system resources because reassignment wasn’t possible? In cases of partial reassignment, what charges or penalties apply to the remaining system- level MWs?
Can CAISO please cover this topic in 02/11 CAISO training on EDAM interties.

 

 

ISO response
  1. EDAM-BRQ-07100: What do ITIEs stand for?
    • Answer: ITIE stands for Import Intertie and represents the resource model for interties into the CAISO.
  2. EDAM-BRQ-07105 and EDAM-BRQ-07113: Can CAISO please help to explain how practical it is for the SCs to both submit and obtain third-party approval by 8:00 am for DA as mentioned in the above BRQs? Can CAISO please elaborate more about the timing aspect for RA obligation reassignments in the 02/11 EDAM Interties Training?
    • Answer: It is recommended that the reassignments be submitted with enough lead-time to provide 3rd-party SCs adequate time to approve. This approach and approval timeline are similar to the current substitution submission, review, and approval timelines.
  3. EDAM-BRQ-07115 and EDAM-BRQ-07116: For how many years does the ISO intend to store and report data for CPUC /market monitor purposes?
    • Answer: The market monitor (DMM) has access to our data directly, so they will review this data as part of their normal process. The CPUC receives RA data via a subpoena regularly; the CAISO will report data to the CPUC as long as it is requested in the subpoena.
  4. EDAM-BRQ-07125: Operation-based question - Can CAISO clarify if an RA obligation is only partially reassigned because some resources are EDAM eligible and others are not, how are the remaining, non-reassigned MWs treated? Are those no EDAM MWs subject to RAAIM penalties, even if reassignment wasn’t possible?
    • Answer: The RA source may be partially an EDAM BAA supply resource and partially an external import. The SC must reassign the first part to the EDAM resource and bid the second part at the System Resource; both parts are subject to RAAIM penalties.
  5. EDAM-BRQ-07125: More of a policy-based question: How does the market distinguish between system-level MWs that should have been reassigned but were not, versus MWs that remain on system resources because reassignment wasn’t possible? In cases of partial reassignment, what charges or penalties apply to the remaining system-level MWs?
    • Answer: The market distinguishes the partial RA sources from the RA reassignment specification; please see the answer to question #4 above.
  6. EDAM-BRQ-07125: Can CAISO please cover this topic in the 02/11 CAISO training on EDAM interties.
    • Answer: The main topics covered during the 2/11 Intertie Scheduling Readiness training are the following:
      1. Scheduling at non-CAISO EDAM BAA Interties
      2. Scheduling at CAISO BAA Interties with non-Edam BAAs
      3. Scheduling at CAISO BAA Interties with EDAM BAA
      4. Scheduling RA Imports at CAISO BAA Interties
      5. Scheduling Exports from the CAISO BAA
    • Under agenda item #4, the training covers the requirements for Reassignment of an RA Obligation in Real Time, but does not address the details about Partial Reassignment and the treatment of remaining non-reassigned resources.
3. Please provide any questions or comments your organization may have regarding the remainder of the EDAM BRS
When providing input in the text box below, please specify the section your comment or question refers to.

BRQ11259 -  BRQ11530 - PG&E Question - The SBIR requirements are scheduled to go live on 08/01/26. Could CAISO please clarify under which EDAM scope this SIBR change falls?

EDAMBRQHASP16187 - PG&E Question - Do the new HASP flag rules apply only within CAISO or across all EDAM BAAs?

ISO response
  1. EDAM-BRQ-11295 – EDAM-IST-BRQ-11530: The SBIR requirements are scheduled to go live on 08/01/26. Could CAISO please clarify under which EDAM scope this SIBR change falls?
    • Answer: EDAM-BRQ-11295, 11295a, and 11295b are for EDAM Entities to access RSE and Intertie bids for their BAA. EDAM-IST-BRQ-11400 through EDMA-IST-BRQ-11530 fall under the Inter-SC Trade scope. Delivery for these requirements remains on track for August, 2026.
  2. EDAM-BRQ-HASP-16187: Do the new HASP flag rules apply only within CAISO or across all EDAM BAAs?
    • The HASP flag rules apply to each resource type listed in the table provided in the requirement. For CAISO internal resources, the participation flag is set to yes for DAM, HASP, and RTM, while the various resource models in the EDAM and EIM BAAs have different Y/N combinations for the HASP participation flag.
4. Please provide any additional questions or comments you may have.
When providing input, limit your questions and comments to the EDAM BRS and the EDAM Initiative.

Southern California Edison
Submitted 03/13/2026, 02:45 pm

Contact

John Diep (John.diep@sce.com)

1. Please provide the version of the EDAM BRS your comments apply to
Please specify the version of the BRS your comments apply to

EDAM BRS Version 1.6

ISO response

Thank you for your questions. Please find the CAISO's responses below.

2. Please provide any questions or comments your organization may have regarding section 5 of the EDAM BRS.
When providing input in the text box below, please specify the BRQ(s) to which your comment or question refers. Please note that there are currently two companion initiatives for EDAM that will be implemented at the same time: 1) EDAM Implementation, which addresses the entire market framework for the EDAM footprint, and 2) EDAM ISO BAA Participations Rules, which applies specific operational and settlement participation rules to the EDAM market for the ISO BAA (‘CISO’). This document pertains to the former.

When providing input in the text box below, please specify the BRQ(s) to which your comment or question refers. Please note that there are currently two companion initiatives for EDAM that will be implemented at the same time: 1) EDAM Implementation, which addresses the entire market framework for the EDAM footprint, and 2) EDAM ISO BAA Participations Rules, which applies specific operational and settlement participation rules to the EDAM market for the ISO BAA (‘CISO’). This document pertains to the former. 


In section 5.4.1, DAM-BRQ-07106, the BRS states: “For EDAM SP-Tie SRs: RA Supplier to Reassign RA Obligation from SP-Tie SR to EDAM Physical Resource(s) in DA”. SCE reads this to imply that the LSE acting as the RA Supplier would be initiating Reassignment to specific resources. However, the recently updated CIRA Guide seems to indicate otherwise. SCE would like to ask CAISO to: 


1) Please clarify if the generator/resource that may be reassigned from the NRS RA Import is supposed to initiate reassignment in CIRA, or the LSE that has the original NRA RA Import? The recently updated CIRA Guide seems to indicate that the generator/resource supplier is the one that needs to initiate reassignments and that “The Resource Reassignment page is only for suppliers”. 

1a) If the generator/resource is the one that needs to initiate the reassignment and the LSE fails to accept the reassignment, who is responsible for RAAIM? 

1b) If the LSE is the one that needs to initiate the reassignment and the generator fails to accept the reassignment, who is responsible for RAAIM? 

ISO response

1) Please clarify if the generator/resource that may be reassigned from the NRS RA Import is supposed to initiate reassignment in CIRA, or the LSE that has the original NRA RA Import? The recently updated CIRA Guide seems to indicate that the generator/resource supplier is the one that needs to initiate reassignments and that “The Resource Reassignment page is only for suppliers”. 

CAISO Response: The SC of the resource (supplier) is responsible for initiating the RA reassignment. Some LSEs are the SC for both the LSE and the resource, so they would be responsible for submitting the reassignments. The SC that includes the resource on its RA Supply Plan is the SC for the resource and is responsible for submitting the reassignment in CIRA.

 

1a) If the generator/resource is the one that needs to initiate the reassignment and the LSE fails to accept the reassignment, who is responsible for RAAIM? 

CAISO Response: The SC of the resource is responsible for RAAIM. The LSE is not involved in the reassignment process; the process is carried out by the SC of the non-resource-specific RA Import and the SC of the physical resource in EDAM. Again, if the LSE is also the SC of the resource, then these rules would apply to that SC.

 

1b) If the LSE is the one that needs to initiate the reassignment and the generator fails to accept the reassignment, who is responsible for RAAIM? 

CAISO Response: See response provided to question 1a.

3. Please provide any questions or comments your organization may have regarding the remainder of the EDAM BRS
When providing input in the text box below, please specify the section your comment or question refers to.
4. Please provide any additional questions or comments you may have.
When providing input, limit your questions and comments to the EDAM BRS and the EDAM Initiative.
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