Potter - Beckham 345-KV Transmission Line Project

The Project involves a proposed 15‑mile, 345‑kilovolt (kV) electric transmission line extending from the Oklahoma state line to the Beckham Substation in Beckham County, Oklahoma. It is part of a broader 345‑kV initiative spanning approximately 125 miles from the central and eastern Texas Panhandle to western Oklahoma. The Project is a joint initiative between Southwestern Public Service Company (SPS) and Transource, with Transource owning and operating the Oklahoma portion and SPS owning and operating the Texas portion.

The Southwest Power Pool (SPP), the regional transmission operator who oversees and monitors the power grid across 17 states, mandated this project as necessary to improve electric reliability, promote an increase in power delivery, and help relieve economic congestion in the region. This new 345-kV line is also a key piece to support the continued development of extra high voltage transmission in the panhandle region of Texas. After facilitating a competitive transmission request for proposal process for this project, SPP awarded this project to Transource and SPS.

Project Benefits

The project is the result of a grid study by Southwest Power Pool (SPP), the regional transmission operator, that identified the need for additional electric transmission infrastructure to support the area’s growth. The project:

  • Supports current and anticipated future power demand
  • Enable delivery of generation resources in western Oklahoma to larger load centers across the state
  • Reduces congestion on the grid and provides better electric reliability by adding an alternative path for energy to serve customers

OKLAHOMA CORPORATION COMMISSION CERTIFICATION PROCESS

Transource representatives plan to submit an application with the Oklahoma Corporation Commission (OCC) to obtain a Certificate of Authority (COA). The regulatory process involves submitting a formal application detailing the project’s purpose, route and justification. Transource representatives anticipate submitting a COA application for the project in summer 2027 and receiving the OCC’s decision in late 2027.

Additional Project Details

We are hosting an in-person open house to share information about what you can expect before, during and after construction. We invite you to learn more and share you feedback on how we can best keep you informed during construction.

IN-PERSON OPEN HOUSE

Please join us from 4:00 to 7:00 p.m. on Thursday, June 11, at the Elk City Convention Center located at 1016 Airport Industrial Rd. in Elk City, OK. There is no formal presentation, so you can arrive at any time during the event.

For the Texas portion of the project, SPS will host separate open houses June 9-10, 2026, within its study area. Information on those meetings can be found on the SPS website xcelenergytransmission.com/projects/potter-beckham-345-kv/.

Timeline

* 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.