The City of Garland, Texas, doing business as Garland Power & Light (GP&L), on Jan. 15 filed with the Public Utility Commission of Texas an application to amend its certificate of convenience and necessity for the proposed King Mountain to Roadrunner Single Circuit 345-kV Transmission Line in Upton County, Texas.
Garland said that it is proposing to design and build the line – on steel monopole structures – to connect a new transmission service customer, Roadrunner Solar Project, LLC, which has requested Garland to interconnect at its to-be-built Roadrunner substation at 345 kV to provide interconnection service to its planned 400-MW solar generation project.
The new line would extend from the proposed King Mountain switching station, located south of, and adjacent to, GP&L’s existing North McCamey to Odessa 345-kV transmission line, about 0.3 miles east of Ranch-to-Market (RM) 2463, and the proposed Roadrunner substation located along Private Road (PR) 480 about 2.75 miles west of RM 2463.
The new King Mountain 345-kV switching station would be owned by the City of Garland, while the new Roadrunner substation would be owned by the generator, Roadrunner Solar Project, LLC, and would be the other terminus for the project.
The proposed line would require a 125-foot-wide right of way (ROW) and would be about five miles long, Garland added.
Garland noted that it is proposing one consensus route for the project because the only landowner directly affected by that route has provided its written agreement to the consensus route. The landowner and generator have agreed to donate the ROW for the consensus route, Garland said.
The area traversed by the line is located in the High Plains Physiographic Province of Texas, which is divided into – from north to south – the Central High Plains, the Canadian Breaks, and the Southern High Plains. Garland added that the study area lies in the Southern High Plains, and that the King Mountain bluffs, which are about 300 feet tall, lie between the line endpoints.
Garland added that there is no habitable structure located within 500 feet of the consensus route’s centerline, and that no park or recreational area is crossed by the consensus route centerline. Additionally, no park or recreation area is located within 1,000 feet of that route’s centerline, Garland said.
Among other things, Garland said that the estimated total cost for the transmission facilities portion of the project is about $6.3m, and that the estimated total cost for the substation facilities portion is about $14.9m.
According to the estimated schedule, engineering and design would be completed in April; ROW and land acquisition would start in March and be completed in June; material and equipment procurement would begin this month and be completed in June; and construction of the facilities would begin in June and be completed in October, which is when the facilities would be energized.