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  • BP-22 Rates Settlement Implementation
  • BP-24 Rate Case
  • TC-25 Tariff Proceeding
  • Rate Period High Water Mark Process
  • Secure Rate Case Website

TC-25 Tariff Proceeding

Section 9 of the Bonneville Power Administration's (Bonneville) Open Access Transmission Tariff (Tariff) provides that Bonneville's Administrator may use the procedures set forth in Section 212(i)(2)(A) of the Federal Power Act to modify terms and conditions of the Tariff. In February through May 2023, BPA engaged customers and stakeholders through a series of workshops to discuss potential reforms to its Tariff to develop and implement a regional solution to improve BPA's Standard Large Generator Interconnection Procedures (LGIP). In Fall 2023, BPA will conduct a TC-25 Terms and Conditions Tariff Proceeding to adopt reforms to BPA's LGIP.

Scheduling Conference

On September 26, 2023, BPA will hold a Scheduling Conference for the TC-25 tariff proceeding. The Scheduling Conference will provide prospective parties with the opportunity to comment on the proposed tariff proceeding procedural schedule in advance of the Prehearing Conference.

 

Draft Proposed TC-25 Procedural Schedule (posted 9/25/2023)

When: Tuesday, Sept. 26, 2023

Time: 9:00 a.m. to 10:00 a.m.

Where: Virtual only

WebEx: join the meeting

Meeting Number:  2764 850 9094

Meeting Password: 47B3QrMx2m@

Phone Bridge: 415-527-5035

TC-25 Tariff Settlement Proposal (September 1, 2023)

In June 2023, BPA initiated discussions with customers and stakeholders regarding the potential for settlement of the TC-25 tariff proceeding to reform BPA’s LGIP. Based on the progress in the settlement discussions, BPA staff developed the below settlement proposal.

  • TC-25 Settlement Agreement (Sept. 1, 2023) includes:
  • Appendix 1, Terms; and
  • Appendix 2: Bonneville’s Attachment L and Attachment R to the Open Access Transmission Tariff.

Prospective parties to the TC-25 tariff proceeding were asked to notify BPA of any objection by 5 p.m. on Friday, Sept. 15, 2023. BPA received no responses objecting to the proposed TC-25 tariff settlement. BPA staff is recommending the adoption of the TC-25 Settlement Agreement in the TC-25 Tariff Proceeding.

TC-25 Pre-Proceeding Workshop Schedule (updated 5/12/2023 with revised workshop schedule on May 18, 2023 Customer Led Workshop from 9:00 a.m. to 12:00 p.m. will be Virtual Only)

June 15, 2023

TC-25 Workshop

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  • Supplemental Materials - ALIS TLRS:Nortwest, TLR Allocations Starter, TLR Allocations Outage

May 25, 2023

TC-25 Workshop

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May 18, 2023

TC-25 Customer-Led Workshop (materials will be posted when received) 

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  • NewSun Energy
  • Savion Presentation (Updated 5/17/2023)
 

April 26 and 27, 2023

TC-25 Workshop

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  • Agenda April 26 and 27
  • TC-25 Workshop Presentation (Updated 4/27/2023)

 

April 21, 2023

TC-25 Customer-Led Workshop

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  • Agenda April 21
  • NIPPC Presentation (Updated 4/21/2023
  • NewSun Presentation (Updated 4/25/2023)
  • Scout Presentation

 

March 15 and 16, 2023

TC-25 Workshop 

  • Time
  • Agenda March 15
  • Agenda March 16
  • TC-25 Workshop Presentation (updated 3/14/2023 with revised workshop schedule and slides 13 and 14)
  • Supplemental Materials: Transition Process Overview

 

February 16, 2023

TC-25 Kickoff Meeting

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TC-25 Pre-Proceeding Workshop (June 2, 2023 Feedback Deadline)

The following were submitted in response to BPA's request for feedback on topics presented at the TC-25 workshop on May 25, 2023. Materials will be posted when received.
  • Clearway Energy Group 
  • Cypress Creek Renewables
  • Gallatin Power
  • NewSun Energy
  • NIPPC
  • Pine Gate Renewables
  • Public Power Council
  • Renewable Northwest
  • Seattle City Light
  • Shell Energy

TC-25 Pre-Proceeding Workshop (May 12, 2023 Feedback Deadline)

The following were submitted in response to BPA's request for feedback on topics presented at the TC-25 workshop on Apr. 26 - 27, 2023. Materials will be posted when received. 
  • BrightNight Power
  • Clearway Energy Group
  • Cypress Creek Renewables
  • Gallatin Power
  • NewSun Energy
  • NIPPC
  • Pine Gate Renewables
  • PNGC Power
  • Public Power Council
  • Renewable Northwest
  • Savion
  • Seattle City Light
  • wpd Wind Projects
  • Amazon Energy (added 5/25/2023)
  • PNGC (added 5/25/2023) 

 TC-25 Pre-Proceeding Workshop (Mar. 30, 2023 Feedback Deadline)

The following were submitted in response to BPA's request for feedback on topics presented at the TC-25 workshop on Mar. 15 -16, 2023
  • ASI
  • NIPPC
  • NRU
  • Pine Gate Renewables
  • Renewable NW
  • Scout Clean Energy
    • Energy Storage Resources Attachment A Annex
  • Seattle City Light
  • Wpd

TC-25 Kick-of Workshop (Mar. 2, 2023 Feedback Deadline)

The following were submitted in response to BPA's request for feedback on topics presented at the TC-25 workshop on Feb.16, 2023
  • NIPPC
  • Seattle City Light
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