# 2026-12704: FERC Launches Routine Rate Fairness Review for Power Grid

2026-12704, Southwest Power Pool, Inc., AEP Oklahoma Transmission Company, Inc., AEP Southwestern Transmission Company, Inc., Deseret Generation & Transmission Co-operative, Inc., Empire District Electric Company, Evergy Kansas Central, Inc., Evergy Kansas South, Inc., Evergy Metro, Inc., Evergy Missouri West, Inc., GridLiance High Plains LLC, ITC Great Plains, LLC, Mountrail-Williams Electric Cooperative, NextEra Energy Transmission Southwest, LLC, NorthWestern Energy Public Service Corporation, Oklahoma Gas and Electric Company, Prairie Wind Transmission, LLC, Public Service Company of Oklahoma, Southwestern Electric Power Company, Southwestern Public Service Company, Transource Missouri, LLC, Transource Oklahoma, LLC, Tri-State Generation and Transmission Association, Inc., Upper Missouri G. & T. Electric Cooperative, Inc.; Notice of Institution of Section 206 Proceeding and Refund Effective Date, is a Federal Register notice from Energy Department, Federal Energy Regulatory Commission published 2026-06-24, effective 2026-06-24; PRIA reads it as touching household money (as of 2026-07-01).

- Canonical: https://policyrisk.com/federal-register/2026-12704
- As of: 2026-07-01
- Plain-text twin of the page above; the HTML and this file carry the same facts.

## Facts
- Document number: 2026-12704
- Title: Southwest Power Pool, Inc., AEP Oklahoma Transmission Company, Inc., AEP Southwestern Transmission Company, Inc., Deseret Generation & Transmission Co-operative, Inc., Empire District Electric Company, Evergy Kansas Central, Inc., Evergy Kansas South, Inc., Evergy Metro, Inc., Evergy Missouri West, Inc., GridLiance High Plains LLC, ITC Great Plains, LLC, Mountrail-Williams Electric Cooperative, NextEra Energy Transmission Southwest, LLC, NorthWestern Energy Public Service Corporation, Oklahoma Gas and Electric Company, Prairie Wind Transmission, LLC, Public Service Company of Oklahoma, Southwestern Electric Power Company, Southwestern Public Service Company, Transource Missouri, LLC, Transource Oklahoma, LLC, Tri-State Generation and Transmission Association, Inc., Upper Missouri G. & T. Electric Cooperative, Inc.; Notice of Institution of Section 206 Proceeding and Refund Effective Date
- Type: Notice
- Agencies: Energy Department; Federal Energy Regulatory Commission
- Citation: 91 FR 37973
- Published: 2026-06-24
- Effective: 2026-06-24
- Comments close: not stated
- Significant: no
- Touches household money: yes
- Regulation identifier numbers: none
- Last updated: 2026-07-01

## In one line

FERC Launches Routine Rate Fairness Review for Power Grid

## Summary

The Federal Energy Regulatory Commission is checking if Southwest Power Pool and several electric companies are charging fair prices for using their power lines. This review started on June 24, 2026, and could lead to refunds if rates are found unfair. Anyone affected has 21 days to speak up and get involved in the process.

## Effects PRIA read

- Investigation may lead to refunds: benefit, medium. The Federal Energy Regulatory Commission opened an investigation of Southwest Power Pool's Open Access Transmission Tariff to see if the transmission rates are fair. The Commission set a refund effective date of June 24, 2026; if it finds the rates unlawful, affected customers could receive refunds…

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## Sources
- [2026-12704 on federalregister.gov](https://www.federalregister.gov/documents/2026/06/24/2026-12704/southwest-power-pool-inc-aep-oklahoma-transmission-company-inc-aep-southwestern-transmission-company)
- [2026-12704 as published (PDF)](https://www.govinfo.gov/content/pkg/FR-2026-06-24/pdf/2026-12704.pdf)

## Related
- [Previous: 2026-12703, California Independent System Operator Corporation; Citizen S-Line Transmission…](https://policyrisk.com/federal-register/2026-12703)
- [Next: 2026-12705, ISO New England Inc.; Central Maine Power Company; The Connecticut Light and Po…](https://policyrisk.com/federal-register/2026-12705)
- [All Federal Register documents](https://policyrisk.com/federal-register)

Source: PRIA, https://policyrisk.com/federal-register/2026-12704 (as of 2026-07-01).