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Western Area Power Administration (WAPA)

Open Access Transmission Tariff (OATT) Revision(s), Status and Postings

Last Update(s): 04/20/2023 (NEW): Notice of WAPA's Filing of OATT Revision 22-02 under FERC Docket No. EF23-5-000



Currently planned, active, or completed WAPA OATT revisions:

1. OATT Revision 22-02 (FERC Orders 676-I/J and 881) (Active)

 Completed OATT Revisions



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OATT Revision 22-02 (Active) (FERC Orders 676-I/J and 881) : (FAQs: WAPA-OATT-Revision-22-02-FAQs.pdf, Version: 11/01/2022)

Please direct questions/comments to your WAPA OATT Regional contact(s).

04/20/2023: Notice of WAPA's Filing of OATT Revision 22-02 under FERC Docket No. EF23-5-000

WAPA has filed the FINAL OATT Revisions with FERC on April 19, 2023.
     WAPA OATT Revision 22-02 Filing (April 19, 2023)

The updated OATT documents, with an Effective Date of June 20, 2023, will be available in the future on the WAPA OATT Documents page on WAPA's Regional OASIS sites at the following link: http://www.oasis.oati.com/WAPA/WAPAdocs/WAPA-Tariff-Docs.htm

Next Steps:

    Effective Date of OATT Revisions (~60 days after WAPA filing, expected June 20, 2023
    Finalize associated Business Practices for Order 881 (likely 3Q-4Q 2024 ahead of July 12, 2025 Implementation)



(03/31/2023 Update) 01/28/2023: Posting Notice of no Stakeholder Comments & FINAL OATT Revision Redline Documents, and Notice of earlier Filing plans for OATT Revision 22-02

WAPA received no written comments or concerns from Stakeholders on the draft OATT revisions during the comment period that ended December 15, 2022.


WAPA expresses its appreciation for the participation and feedback from Stakeholders.

WAPA has posted the FINAL OATT Revision Redline documents below.  WAPA removed the embedded comments, made several clean-up type edits for consistency and other minor formatting edits to the proposed OATT revisions posted on November 15, 2022.

WAPA-OATT-Revision-22-02-OATT-Redline-for-Filing.pdf; Final redlines to OATT main provisions, including new OATT Attachment U, and general clean-up (Updated 03/31/2023 to correct typo in Filing under Docket No. NJ23-1-000. See note below in OATT Revision 22-01 update.)
WAPA-OATT-Revision-22-02-LGIP-Redline-for-Filing.pdf; Final redlines to LGIP (Miscellaneous minor revisions)
WAPA-OATT-Revision-22-02-LGIA-Redline-for-Filing.pdf; Final redlines to LGIA (Miscellaneous minor revisions)

WAPA-OATT-Revision-22-02-SGIP-Redline-for-Filing.pdf; Final redlines to SGIP (Miscellaneous minor revisions)

WAPA-OATT-Revision-22-02-SGIA-Redline-for-Filing.pdf; Final redlines to SGIA (Miscellaneous minor revisions)


Given no material changes were made to the FINAL Redlines, no COMPARE documents were posted.

Given no Stakeholder comments or concerns and no subsequent material OATT revision changes, WAPA intends to file OATT Revision 22-02 with the Federal Energy Regulatory Commission (FERC) earlier than originally planned. (03/31/2023 Update: Given the later than expected FERC Order for OATT Revision 22-01 (DSW EIM), WAPA was unable to file OATT Revision 22-02 earlier. WAPA now intends to proceed with this filing on April 19, 2023.)

Next Steps:

    WAPA anticipates filing to FERC around April 19, 2023
    Effective Date of OATT Revisions (~60 days after WAPA filing, expected June 20, 2023
    Finalize associated Business Practices for Order 881 (likely 3Q-4Q 2024 ahead of July 12, 2025 Implementation)

11/15/2022: Posting of Proposed OATT Revision 22-02 Redline Documents, Start of Informal Comment Period, and Posting of Stakeholder Meeting Presentation

WAPA has posted the proposed OATT Revision 22-02 Redline documents below to address FERC Orders 676-I/J and 881, and also to include miscellaneous minor revisions throughout the OATT (including explanatory comments where needed), including the Large Generator Interconnection Procedures and Agreement (LGIP/LGIA), and Small Generator Interconnection Procedures and Agreement (SGIP/SGIA). The proposed OATT revisions will be presented at the Stakeholder Meeting December 7, 2022 at 10am MST (via Net Conference).

WAPA-OATT-Revision-22-02-OATT-Redline--DRAFT.pdf; Proposed redlines to OATT, including proposed new OATT Attachment U, and general clean-up
WAPA-OATT-Revision-22-02-LGIP-Redline--DRAFT.pdf; Proposed redlines to LGIP (Miscellaneous minor revisions)
WAPA-OATT-Revision-22-02-LGIA-Redline--DRAFT.pdf; Proposed redlines to LGIA (Miscellaneous minor revisions)
WAPA-OATT-Revision-22-02-SGIP-Redline--DRAFT.pdf; Proposed redlines to SGIP (Miscellaneous minor revisions)
WAPA-OATT-Revision-22-02-SGIA-Redline--DRAFT.pdf; Proposed redlines to SGIA (Miscellaneous minor revisions)

WAPA-OATT-Revision-22-02-Stakeholder-Meeting-Presentation.pdf; The presentation summarizes the proposed OATT revisions, and provides Background Information, Next Steps, and Revision Timelines.

This posting begins the 30-day informal comment period.  WAPA invites all interested parties to attend the Stakeholder Meeting, and provide comments.  Please also submit any comments in writing by December 15, 2022, to: tariffcomments@wapa.gov.




11/01/2022: Initial Notification of Planned OATT Revision 22-02 (FERC Orders 676-I/J and 881), Announcement of Stakeholder Meeting on December 7, 2022

WAPA is evaluating OATT revisions to address FERC Order No. 676-I and Order No. 676-J (Standards for Business Practices and Communication Protocols for Public Utilities) and FERC Order No. 881 and Order No. 881-A (Managing Transmission Line Ratings) - see Order 881 brief summary in the FAQs. WAPA indicated it would proceed with these revisions during the prior OATT Revisions 21-01 process and in its associated filing under FERC Docket No. NJ22-9-000. The OATT revisions will primarily be in existing Attachment N (for Orders 676-I/J) and a new Attachment U (for Order 881). In addition, WAPA also plans to evaluate other minor OATT clean-up and maintenance revisions. See announcement here: WAPA-OATT-Revision-22-02-Announcement.pdf.  WAPA is also providing notice via electronic mail to its customers.

As part of WAPA's process to seek stakeholder comments on the proposed OATT revisions, WAPA will hold a Stakeholder Meeting on December 7, 2022 at 10am MST (via Net Conference) to present its proposed OATT revisions for OATT Revision 22-02. Information is here: Net ConferenceWAPA's 30-day comment period will begin once WAPA posts its proposed OATT revisions on its Regional OASIS sites before the December 7, 2022 Stakeholder Meeting. WAPA invites all interested parties to attend.  In addition to sharing the proposed revisions, WAPA will also outline the expected timeline to respond to stakeholder feedback, complete the OATT revisions, and file the OATT revisions with FERC.

Additional details, including the meeting presentation and redlines of WAPA's proposed OATT revisions, will be posted on this page prior to the December 7, 2022 Stakeholder Meeting.  WAPA will also provide notice via electronic mail of the redlines postings.

Please direct questions/comments to your
WAPA OATT Regional contact(s).


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Any other questions can be directed to:  Steve Sanders (WAPA-UGP) at 406-255-2807 (sanders@wapa.gov).

Update History:

OATT Revision 22-02 (FERC Orders 676-I/J and 881)
03/31/2023: Updates to previous 01/28/2023 posting regarding latest filing plans for OATT Revision 22-02
01/28/2023: Posting Notice of no Stakeholder Comments & FINAL OATT Revision Redline Documents, and Notice of earlier Filing plans for OATT Revision 22-02
11/15/2022: Posting of Proposed OATT Revision 22-02 Redline Documents, Start of Informal Comment Period, and Posting of Stakeholder Meeting Presentation
11/01/2022: Initial Notification of Planned OATT Revision 22-02 (FERC Orders 676-I/J and 881), Announcement of Stakeholder Meeting on December 7, 2022