As prescribed in section 4.2 and 4.3 of the Tiered Rate Methodology (TRM), the Rate Period High Water Mark (RHWM), the RHWM Tier 1 System Capability (RT1SC), and Above-RHWM Loads 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.

FY 2026-2028 RHWM Process Materials

Materials

Meetings and Workshops

Aug. 15, 2024 Public Workshop (previously scheduled for July 31, 2024)

June 4, 2024 (previously scheduled for May 22, 2024)

Historical RHWM Processes