Oncor files joint proposed notice of approval for 138-kV line in Texas

Oncor Electric Delivery Company on Dec. 18 filed with the Public Utility Commission of Texas a joint proposed notice of approval, stating that the company’s application for construction of a proposed 138-kV transmission line in Reeves County in Texas is approved.

As noted in the filing, Oncor in October filed an application to amend its certificate of convenience (CCN) for the project, and based on that application, as well as on PUC staff’s Dec. 14 memorandum recommending approval of the application, Oncor and staff jointly propose that the notice of approval be approved.

According to the filing, the proposed project is a single-circuit transmission line, to be built on double-circuit-capable structures between the proposed Tunstill point of delivery (POD), located northeast of Farm-to-Market Road 652 and U.S. Highway 285 near the community of Orla, and Oncor’s Riverton switching station site (currently under construction), located in Reeves County, about four to five miles south of the proposed Tunstill POD.

The proposed project includes modifications at the Riverton switching station and the POD location, which may involve dead-end structures, other structures, transformers, grading, fences, and other equipment.

The filing also noted that the proposed project would use double-circuit steel or concrete monopoles, and the proposed route would be about 5.4 miles long.

The estimated cost of the proposed project for transmission line facilities along the proposed route is about $7.8m, while the station and tap point work is estimated to cost an additional approximately $1.8m.

A filing further noted that a new 138-kV, single-circuit, double-circuit-capable line, to be built on double-circuit structures, is needed to support new oil and gas processing facilities being installed in Reeves County by Stateline Processing. Stateline plans to build, own, operate, and maintain its own substation, with a projected maximum peak load demand of 58.7 MW, the filing noted, adding that Stateline and Oncor in June executed a transmission/substation facility extension agreement to provide the requested transmission service to Stateline’s new substation.

The filing also noted that a new 138-kV, single-circuit, double-circuit-cable line, to be built on double-circuit structures, is needed to support new facilities being installed in Reeves County by Delaware Basin Midstream LLC, which plans to build, own, operate, and maintain its own substation, with a forecast load of 30 MVA. Oncor and Delaware Basin on Dec. 7 executed a transmission/substation facility extension agreement to provide the requested transmission service to Delaware Basin’s new substation.

The filing added that the proposed project is necessary to provide the transmission facilities needed to interconnect Stateline’s and Delaware Basin’s new respective substation facilities to the electric grid.

Noting that an environmental assessment was produced by Halff Associates, Inc., the filing said that Oncor evaluated 32 routes that Halff analyzed and recommended “Route 2” as the route that best complies with certain routing criteria. Staff recommends approval of the proposed project along Route 2 (the proposed route), the filing said.

There are no habitable structures located within 300 feet of the proposed route. The filing also said that no parks or recreational areas owned by a government body or an organized group, club, or church were identified as being located within 1,000 feet of the centerline of the proposed route. The proposed project would have minimal impact on recreational and park areas.

The filing added that there are no recorded cultural resource sites identified as being crossed by the proposed route, and no sites are located within 1,000 feet of the centerline of the proposed route. The proposed project would have minimal impact on historical values, the filing noted, adding that the proposed project would also have minimal impact on aesthetic values.

Noting that the proposed route is not anticipated to have significant impacts on the natural resources of the area, the filing said that staff recommends that, to the maximum extent practicable, Oncor attempt to minimize impacts from possible soil erosion and mitigate the risk of bird collisions with the line through best management practices.

Among other things, the filing said that in the event that Oncor or its contractors encounter any artifacts or other cultural resources during project construction, work is to cease immediately in the vicinity of the resource and the discovery is to be reported to the Texas Historical Commission.

Also, the filing noted that Oncor is to use best management practices to minimize the potential impact to migratory birds and threatened or endangered species.

About Corina Rivera-Linares 3235 Articles
Corina Rivera-Linares, chief editor for TransmissionHub, has covered the U.S. power industry for the past 15 years. Before joining TransmissionHub, Corina covered renewable energy and environmental issues, as well as transmission, generation, regulation, legislation and ISO/RTO matters at SNL Financial. She has also covered such topics as health, politics, and education for weekly newspapers and national magazines. She can be reached at clinares@endeavorb2b.com.