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​Open Access Transmission Tariff
​
The Open Access Transmission Tariff (OATT) defines the terms and conditions of point-to-point and network integration transmission services offered by BPA Transmission Services.
​2019 OATT

​On March 1, 2019, BPA issued the Administrator's Final Record of Decision in the TC-20 Terms and Conditions Tariff Proceeding adopting the TC-20 Settlement Agreement, which includes the terms and conditions of an OATT to be effective on Oct. 1, 2019 and an associated Business Practice Process.

2019 Tariff
Transmission Business Practice Development Process
TC-20 Settlement Agreement
Tariff Proceedings 

The attachments below are included in the OATT above, but are also posted individually for convenience.
Attachment L (LGIP) (10/1/2019)
Attachment N (SGIP) (10/1/2019)
 
Reference Documents
 

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