Public Rate Design Methodology 2029

BPA is replacing the Tiered Rates Methodology (TRM), which expires Sept. 30, 2028, with the Public Rate Design Methodology (PRDM). The PRDM will apply to the section 7(b) rate applicable to sales of firm power under the Provider of Choice contracts and will go into effect on Oct. 1, 2028.  The PRDM was developed in a section 7(i) proceeding (referred to as the PRDM-26 Proceeding) that ran concurrent with the BP-26 Rate Proceeding.

PRDM Final Record of Decision

On July 7, 2025, BPA released the Administrator's Final Record of Decision, PRDM-26-A-02, in the PRDM-26 proceeding with the PRDM Final Proposal, PRDM-26-A-03. 

BPA has concluded the PRDM-26 Proceeding. Official filings related to this proceeding were made on the PRDM-26 secure website.

Supporting Information