The City of Garland, Texas (Garland) d/b/a Garland Power & Light (GP&L) on March 22 filed with the Public Utility Commission of Texas a joint proposed notice calling for the approval of Garland’s King Mountain to Roadrunner 345-kV Transmission Line Project in Upton County, using the proposed route.
Commission staff has agreed to the joint proposed notice of approval, Garland said.
As noted in the filing, Garland in January filed its application for approval to amend its certificate of convenience and necessity (CCN) to design and build the project to interconnect a new solar generation facility. Garland said that it and staff are the only parties in the docket, and no party requested a hearing on the merits.
Garland said that it proposed a single route, which would be about five miles long and built primarily on steel monopole structures. Garland noted that it would build the line, using self-supporting, single-circuit-capable single steel poles, from the proposed King Mountain switching station, located south of and adjacent to Garland’s existing North McCamey to Odessa 345-kV transmission line, about 0.3 miles east of Ranch to Market (RM) 2463, to the proposed Roadrunner substation, located along Private Road (PR) 480 about 2.75 miles west of RM 2463.
The typical structure for the line would be between 110 to 155 feet in height and would require a 125-foot-wide right of way (ROW).
The proposed project is necessary to implement the request of Roadrunner Solar Project LLC for direct interconnection of its 400-MW solar project to Garland’s 345-kV transmission system, Garland added.
Roadrunner Solar Project and Garland in September 2018 executed the ERCOT Standard Generation Interconnection Agreement to provide transmission service associated with the solar generation project.
The estimated cost of the line is about $6.3m, with an additional $14.9m in substation construction, Garland added.
No parks or recreational areas owned by a governmental body or an organized group, club, or church were identified as being located within 1,000 feet of the centerline of the proposed route, Garland said, adding that there are no known historical or archaeological sites crossed by the proposed route, and no sites are located within 1,000 feet of the centerline of the proposed route.
Among other things, Garland said that the project is not anticipated to have significant impacts to existing land uses or the geological, hydrological, or wetland resources of the area. In addition, Garland said that the project would not cross any known habitat of federally listed endangered or threatened species.
Under conditional approval, Garland said that it is reasonable and appropriate for a CCN order not to be valid indefinitely because it is issued based on facts known at the time of issuance. Seven years is a reasonable and appropriate limit to place on the authority granted in this notice to build the project, Garland said.
Garland must conduct surveys, if not already completed, to identify metallic pipelines that could be affected by the line and cooperate with pipeline owners in modeling and analyzing potential hazards because of alternating current interference affecting pipelines being paralleled, the filing noted.