Southwestern Public Service Company (SPS) on March 6 filed an application for a certificate of convenience and necessity with the Public Utility Commission of Texas (PUCT) for a proposed 115-kV line within Lamb, Castro, and Hale counties in northwest Texas between Amarillo and Lubbock (Docket No. 40193).
The line, dubbed the Newhart to Lamton line, would be between 23 and 30 miles long, depending on which of the 15 alternate routes submitted is approved by the PUCT. The proposed line will be constructed entirely on new right-of-way (ROW) with a proposed easement width of 70 feet.
The proposed project would include the construction of the proposed Newhart substation and a new 115-kV line that will extend from the station to the existing Hart Industrial and Lamton substations, located in Castro and Lamb counties, respectively.
The 115-kV single-circuit transmission line would be constructed using primarily single-pole steel structures, though it is possible that some H-frame structures would be used. Single-pole structures require a smaller surface area than H-frame structures and eliminate the need for guy wires for corner structures, according to the filing.
The proposed project is one of four projects associated with the Newhart substation. Along with the Newhart to Kress, Newhart to Castro County, and Newhart to Swisher County, the Newhart to Lamton project will upgrade, strengthen, and relieve high transmission loading on the central portion of the SPS transmission system in six counties served by the utility, according to the filing.
The projects are all included in the 2009 Southwest Power Pool (SPP) transmission expansion plan (STEP), and SPS has been issued a notification to construct for the facilities.
SPS is an Xcel Energy (NYSE:XEL) company.