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​Rate Cases & Tariff Proceedings
Rate Cases
BPA establishes rates for power and transmission services in a rate proceeding, a formal evidentiary hearing process under Section 7(i) of the Northwest Power Act. Prior to the initiation of the rate case, workshops are held to review and discuss upcoming rate case issues.
Current Proceedings: The BP-20 Rate Proceeding to set power and transmission rates for FYs 2020-2021 (Oct 2019 – Sep 2021) concluded on July 25, 2019 with the publication of the Final Record of Decision. Public documents related to the BP-20 Rate Proceeding are posted to the BP-20 Rate Case website. Information and documentation concerning past rate proceedings are posted to the Inactive Rate Cases website.
Tariff Proceedings
BPA follows the procedural requirements of Section 212(i)(2)(A) of the Federal Power Act (Section 212) to make changes to its open access transmission tariff for transmission service across the Federal Columbia River Transmission System.  
Current Proceedings:  The TC-20 (Terms and Conditions) Tariff Proceeding to establish a new open access transmission service across the Federal Columbia River Transmission System concluded on March 1, 2019 with the publication of the TC-20 Settlement Final Record of Decision. Public documents related to the TC-20 Tariff Proceeding and TC-20 Settlement are posted to the Tariff Proceedings website and TC-20 Settlement website, respectively.
Rules of Procedure Revision Process
BPA’s Rules of Procedure Governing Rate Hearings (Rules of Procedure) govern BPA’s power and transmission rate hearings conducted under section 7(i) of the Northwest Power Act.  In 2018, BPA updated the Rules of Procedure for rate cases, expanding them to accommodate Section 212 transmission terms and conditions proceedings.
 Documents related to the revision process are posted to the Rules of Procedure Revision website.

Rate Period High Water Mark Process
As prescribed in section 4.2 and 4.3 of the Tiered Rate Methodology (TRM), the Rate Period High Water Marks (RHWM) are set by BPA in the RHWM Process prior to each power rate proceeding. The RHWM sets the maximum planned amount of power that a customer may purchase each year of the Rate Period under Priority Firm Tier 1 Rates, and other values used to calculate rates.
Upcoming & Current Processes: The FY 2020-2021 RHWM Process was held in spring 2018. Public documents related to this process are posted to the RHWM website.