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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, 2021

​On July 28, 2021, BPA issued the Administrator's Final Record of Decision in the TC-22 Terms and Conditions Tariff Proceeding adopting the modified terms and conditions of the Tariff to be effective on Oct. 1, 2021.

Open Access Transmission Tariff, effective Oct. 1, 2021
TC-22 Tariff Proceeding

The attachments below are included in the OATT above, but are also posted individually for convenience.
Attachment L (LGIP) (10/1/2021)
Attachment N (SGIP) (10/1/2021)
Attachment Q (EIM) (10/1/2021)
Reference Documents

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