Construction is underway on the 168-mile 345 kilovolt (kV) Tuco-Yoakum-Hobbs 345 kV transmission line project in Texas and New Mexico. Work is currently taking place on a 40 mile long section of the new line between the Yoakum County Substation located about 6 miles southeast of Plains, Texas and the Hobbs Substation about 11 miles northwest of Hobbs, New Mexico.
Construction will begin in early 2019 on the final 105 mile section between Yoakum Substation and the TUCO Substation located approximately two miles north of Abernathy in Hale County, Texas.
The existing Yoakum substation is being upgraded to be 345 kV capable.
These projects will provide a significant source of bulk power transfer capacity from the transmission hub at Tuco substation to the southwest portion of the SPS transmission system in west Texas and eastern New Mexico. This project will also provide additional stability and reliability to the south and western parts of the SPS system.
The Texas Public Utility Commission and the New Mexico Public Regulation Commission granted Certificates of Convenience and Necessity (CCNs) for the portions of the Tuco-Yoakum-Hobbs line located in the respective states before construction started. The CCN process determines the project need and impact as well as the line characteristics, such as substations and endpoints, and the line route. The Tuco-Yoakum-Hobbs 345 kV transmission line is expected to be in-service in mid-2020. The estimated cost of the project is $242 million.