Open Access Transmission Tariff

The Open Access Transmission Tariff (Tariff) defines the terms and conditions of point-to-point and network integration transmission services, ancillary services, and generator interconnections offered by BPA Transmission Services.

BPA Tariff Effective Oct. 1, 2023

On February 9, 2023, BPA issued the Administrator's Final Record of Decision in the TC-24 Terms and Conditions Tariff Proceeding adopting the modified terms and conditions of the Tariff to be effective on Oct. 1, 2023.

Open Access Transmission Tariff, effective Oct. 1, 2023
TC-24 Tariff Proceeding

 
The attachments below are included in the OATT above, but are also posted individually for convenience.
Attachment C (ATC Methodology) (10/1/2023)
Attachment L (LGIP) (10/1/2023)
Attachment N (SGIP) (10/1/2023) 
Attachment Q (EIM) (10/1/2023)
 

Reference Documents

Customer Reciprocity Statements (2/24/2012)
Attachment E: PTP Customer List (10/16/2023)
Attachment I: NT Customer List (10/16/2023)
OATT Interest Rates (11/06/2023)
 

Open Access Transmission Tariff Archive

This is the archive for expired BPA Open Access Transmission Tariffs.
2021 Tariff (expired 9/30/2023)
2019 Tariff (expired 9/30/2021)
Open Access Transmission Tariff (expired 9/30/2019)