Lawton Eastside to Sunnyside 345 kVTransmission Line Rebuild Project
(Lawton - Lone Grove Transmission Line Rebuild Project)

Representatives of Public Service Company of Oklahoma (PSO) and its affiliate, AEP Oklahoma Transmission Company, Inc. (OK Transco) plan to improve the electric transmission system in Comanche, Stephens and Carter counties. The Lawton Eastside to Sunnyside 345 kV Transmission Line Rebuild Project (a.k.a. Lawton - Lone Grove Transmission Line Rebuild Project) involves rebuilding approximately 70 miles of transmission line in southwestern Oklahoma to increase reliability and strengthen the local power grid. Crews plan to begin construction in summer 2026 and conclude by spring 2028.

On Oct. 14, 2025, OK Transco filed an application for a Certificate of Authority (COA) with the Oklahoma Corporation Commission (OCC) (Case No. PUD 2025-000069) to rebuild this line.

This transmission line rebuild is part of the larger Southern Oklahoma Transmission Improvements Project. To learn more about this effort, click HERE.

Fall 2025: Project representatives will host in-person open house events on the following dates, times and locations:

• Comanche County: Tuesday, Nov. 18, 2025, 5 - 7 p.m.
  • Comanche County Fairgrounds (Annex Room), 920 SW Sheridan Road, Lawton, OK, 73505
• Stephens County: Wednesday, Nov. 19, 2025, 5 - 7 p.m.
  • Simmons Center (Redbud Room), 1330 Chisholm Trail Parkway, Duncan, OK, 73533
• Carter County: Thursday, Nov. 20, 2025, 5 - 7 p.m.
  • Hilton Garden Inn Ardmore (Ballroom), 710 Premier Parkway, Ardmore, OK, 73401

All three events offer the same information, so you may choose one to attend. You can view detailed maps and learn more about project plans from project representatives. There is no formal presentation, so you can arrive at any time during the events.

Spring 2025: This project continues to evolve and the timeline has shifted accordingly. As of spring 2025, PSO representatives plan the following schedule:

• Early Fall 2026: Pre-construction activities begin, which may include:
  • Trimming or removing woody-stemmed vegetation from PSO's right-of-way
  • Installing temporary gates/fencing and access roads where necessary
  • Installing culverts for water management
• Fall 2026: Construction activities begin
• Spring 2028: Construction activities conclude and facilities placed in service

O.R. Colan Associates (ORC) continues to serve as PSO’s right-of-way representative for this project. ORC right-of-way agents are contacting affected landowners to discuss field activities, easement acquisition and construction.

Early 2025: As this project has evolved, the timeline has shifted. Crews planned construction to begin in summer 2026 and conclude in early 2028. Now, PSO representatives expect pre-construction activities such as right-of-way access preparation to begin in summer 2027, followed by transmission line construction in early fall 2027. Company representatives expect construction to conclude in spring 2029.

O.R. Colan Associates (ORC) serve as PSO’s right-of-way representative for this project. ORC right-of-way agents continue to contact affected landowners to discuss field activities, easement acquisition and construction.

Spring 2024: O.R. Colan Associates (ORC) serve as PSO’s right-of-way representative for this project. ORC right-of-way agents are contacting affected landowners to discuss field activities, easement acquisition and construction.

PSO representatives expect pre-construction activities such as right-of-way access preparation to begin in summer 2026, followed by transmission line construction in fall 2026. Company representatives expect construction to conclude in early 2028.

Early 2024: As this project has evolved, the timeline has shifted. Crews planned construction to begin this summer and conclude in late 2025. Now, PSO representatives expect pre-construction activities such as right-of-way access preparation to begin in summer 2026, followed by transmission line construction in early fall 2026. Company representatives expect construction to conclude in early 2028.

Summer 2023: Right-of-way agents continue to contact affected landowners to discuss field activities, easement acquisition and construction. As this project has evolved, the timeline has shifted. PSO representatives expect transmission line construction to begin in summer 2024 and conclude in late 2025.