# BPA to Launch Rate and Tariff Proceedings

Bonneville Power Administration plans expedited BP-27R rate and TC-27R tariff proceedings, anticipated to begin by the end of 2026, to revise its 2026 rate schedules and open access transmission tariff. The proceedings may implement reforms tied to SPRINT, PLAID, and a Transmission Open Season. For organizations that purchase power, use transmission services, or support related projects, the revisions could affect energy-cost assumptions and transmission planning.

- BPA identifies its GAT Project webpage and event calendar as sources for workshop information, participation details, and comment opportunities; stakeholders can use these channels to prepare for engagement as the proceedings begin.
- Procurement teams and contractors whose project costs depend on BPA rates or transmission access should account for potential schedule and tariff changes in energy-cost and delivery planning.
- The signal describes rate and tariff proceedings, not a contract solicitation or award; it does not provide contract values, procurement deadlines, or specific revised terms.

**Jurisdictions:** federal
**Industries:** Energy & Utilities
**Topics:** Regulatory Compliance
**Published:** October 31, 2026

### Government Entities
- Bonneville Power Administration (BPA)

### Sources
- [BP-27R Rate Case and TC-27R Tariff Proceeding - Bonneville Power Administration](https://www.bpa.gov/energy-and-services/rate-and-tariff-proceedings/bp-27r-rate-case-and-tc-27r-tariff-proceeding) - BPA