Mathewson - Redbud Transmission Line Project

Transource Energy, a partnership between American Electric Power and Evergy, plans to build approximately 40 miles of 345-kilovolt transmission line between the Oklahoma Gas & Electric (OG&E) Mathewson Substation in Piedmont and the OG&E Redbud Energy Facility in Luther, Oklahoma.

The Southwest Power Pool (SPP), the regional transmission operator who oversees and monitors the power grid across 14 states, mandated this project to relieve congestion on the power grid in and around Oklahoma City. After considering several alternative projects, SPP awarded this project to Transource through a competitive proposal process involving other transmission service providers.

Click here to learn more about SPP's 2023 Integrated Transmission Planning Assessment Report

Additional Project Details

The Southwest Power Pool (SPP) is currently reviewing the Mathewson-Redbud Transmission Line Project as part of its regional transmission planning process. As energy needs and other conditions change, SPP periodically reviews transmission projects to confirm they are still needed and remain the appropriate solution for the region.

SPP expects to complete its review and present recommendations to its Board of Directors later this year. The Board is expected to consider those recommendations in November 2026. Following the Board's decision, Transource will provide an update on what the decision means for the project and any next steps.

Transource remains committed to keeping landowners, local officials and community members informed as the project moves through this review process. Additional updates will be provided as information becomes available.

Timeline

2025

  • Transmission Line Routing Analysis
  • Project Announcement and Open Houses

2026

  • File Certificate of Authority Application with OCC*
  • Present Final Line Route Alternatives at Open Houses

2027

  • Construction
  • Project Placed in Service

News Releases

Maps & Simulations

* The accompanying map depicts the project area. It should be noted that the map contained on this site is for information purposes only. Transource reserves the right to alter, change, or amend the map at any time without notice and Transource provides no warranty about the accuracy of content. Keep this in mind when reviewing this map. However, Transource will make all attempts to keep this map as accurate as possible. If you have any questions about the accuracy of the current map please Contact Us.