Process and Program Details

Under the REP, BPA "purchases" power from each participating utility at that utility's Average System Cost (ASC). The Administrator then offers, in exchange, to "sell" an equivalent amount of electric power to the utility at BPA's PF Exchange rate. The amount of power purchased and sold equals the qualifying residential and farm load of each utility participating in the REP. This qualifying residential and farm load (residential load) is then multiplied by the difference between BPA's PF Exchange rate and the utility's ASC to derive the utility's REP benefits. These benefits are passed on to the residential and farm customers of the utility. To calculate an ASC, BPA reviews the participating utility’s resource costs and loads as directed in the 2008 ASC Methodology (18 CFR Part 301, Sales of Electric Power to BPA; Revisions to Average System Cost Methodology). Under the 2008 ASCM, a utility's ASC is generally determined by dividing the utility's allowed cost of resources (Contract System Cost) by the utility's total system load (Contract System Load). The resulting quotient of this calculation is the utility's ASC. BPA determines ASCs in ASC Review Processes which take place concurrently with BPA's rate proceeding. Utilities participating in the REP must submit ASC filings and all associated documentation in the ASC Review Processes in accordance with the filing procedures set forth in the 2008 ASCM and the Rules of Procedure for BPA’s ASC Review Process (Rules of Procedure).

At the conclusion of the ASC Review Processes, BPA issues Final ASC Reports for each of the REP‑participating utilities which establish the utilities’ ASCs for the upcoming Exchange Period. ASCs are also a component used by BPA in the rate proceeding to determine the respective utilities’ REP benefits.

2008 ASC Methodology

ASC Filing Templates

The following documents are available in this zip file.

  • Appendix 1 Template (BP-22 IP version)
  • Forecast Model - IOUs Template (BP-22 IP version)
  • Forecast Model - COUs Template (BP-22 IP version)

The 2012 REP Settlement (REP-12 Proceeding)

BPA conducted the REP-12 proceeding to review the terms and conditions of a long-term settlement of issues regarding the implementation of the Residential Exchange Program (2012 REP Settlement). This proceeding concluded with the Administrator's issuance of a Final Record of Decision (ROD) on July 26, 2011 which reflected his decision to adopt the 2012 REP Settlement.

One party challenged BPA in the United States Court of Appeals for the Ninth Circuit (Court) on the 2012 REP Settlement. On May 22, 2015, the Court issued a memorandum opinion in Public Power Council v. U.S. Dept. of Energy, 2015 WL 2448336, which dismissed as moot the Western Public Agency Group’s (WPAG) challenge to BPA’s WP-07S ROD. This dismissal effectively ended all current challenges related to the REP.

Documents pertaining to the 2012 REP Settlement include:

The table below reflects the total 2012 REP Settlement benefits to the IOUs for each fiscal year.* The total figure is calculated as a sum of each REP Exchange Period (multiplying Millions per Fiscal Year by the number of years in the REP Exchange Period). In addition, the Refund Amount of $76,537,617 to PF Customers is included in the totals below for FY 2012-2019.**

REP Exchange Period

Millions per Fiscal Year

FY 2012-2013


FY 2014-2015


FY 2016-2017


FY 2018-2019


FY 2020-2021


FY 2022-2023


FY 2024-2025


FY 2026-2028




*For more information see Appendix A: 2012 REP Settlement Agreement, Section 3.1.

**For more information see Appendix A: 2012 REP Settlement Agreement, Section 3.2. 

BP-22 Rate Case

ASCs for the FY 2022-2023 Exchange Period were determined in the FY 2022-2023 ASC Review Processes. The PF Exchange Rates for REP-participating utilities eligible for REP benefits during the FY 2022-2023 Exchange Period are listed below. The PF Exchange Rates are comprised of a base PF Exchange Rate plus a utility-specific 7(b)(3) supplemental rate charge. For additional information see the BP-22 Power Rate Schedules and General Rate Schedule Provisions and BP-22 Rate Case. The ASCs and the PF Exchange Rates, below, were uploaded to this website on October 1, 2021. These ASCs will become effective for the FY 2022-2023 Exchange Period on October 1, 2021, and remain in effect through September 30, 2023.

Rates in $ / MWh

Investor-Owned Utilities
Rates in $ / MWh1
Base PF Exchange
7(b)(3) Surcharge
PF Exchange Rates
Idaho Power
North Western
Portland General
Puget Sound Energy
Consumer-Owned Utilities
Base Tier 1 PF Exchange
7(b)(3) Surcharge
PF Exchange Rates
Snohomish County PUD

Rate Directive Step. Calculation of Settlement Utility Specific PF Exchange Rates (updated July 25, 2019)

REP Compliance Review Program

Section 5 of the NW Power Act requires BPA to ensure payments made to REP-participating utilities are passed on to the utilities' retail residential and farm customers (residential loads). By law, these REP payments must be “passed through directly” to the utility’s residential loads and appear as a credit on the utility customers’ monthly bills. To ensure these payments are distributed to eligible retail customers correctly and in a timely manner, BPA developed the REP Compliance Review Program. Through the REP Compliance Review Program, BPA reviews the REP benefits received by the utilities from BPA and passed through to their qualifying REP customers.

REP Customer Load Eligibility Guidelines (CLEG)

BPA developed the Customer Load Eligibility Guidelines (CLEG) to provide guidance to REP-participating utilities in determining eligibility of residential, farm, and irrigation/pumping loads for REP benefits under the NW Power Act. Specifically, the CLEG addresses a variety of issues related to eligible and ineligible retail customers under the REP. The CLEG is intended to be used as a guideline only and may be revised or cancelled by BPA at any time. Throughout the term of the REP, BPA has made periodic updates to the CLEG. BPA, REP-participating utilities, and other interested parties worked together to update and provide greater clarity to the CLEG.

Contact Information

Paulina Cornejo

Michael Edwards