Mountain Home Transmission Project

Example structure for Mountain Home Example transmission structure for proposed project.

The Mountain Home Transmission Project is designed to bring transmission infrastructure to growing areas in Gillespie, Kimble and Kerr counties in Texas. The proposed project includes construction of a new 138-kilovolt (kV) load-serving Mountain Home Substation and a new 138-kV transmission line connecting the Mountain Home Substation to existing substations located in Harper and either Ingram or Hunt. In order to construct and operate these facilities, LCRA Transmission Services Corporation filed an application to amend its existing Certificate of Convenience and Necessity with the Public Utility Commission of Texas.

Project Updates

Jan. 23, 2020
Updated Intervenor Maps from the Hearing on the Merits available:
View the Mountain Home Project Intervenor Map [PDF].
View the Large-scale Intervenor Map on Aerial Imagery [PDF].

July 22, 2019
Application revisions filed with Public Utility Commission of Texas
LCRA TSC filed a revision to its application with the Public Utility Commission of Texas (PUC) on July 19, 2019. The revisions provide updated information on estimated route costs, which range from $61 million to $75 million. The revisions also update some information on Tables 5-1 and 5-2 addressing environmental data.

May 31, 2019
Application filed with the Public Utility Commission of Texas
LCRA TSC filed an application with the Public Utility Commission of Texas (PUC) on May 31 to amend its Certificate of Convenience and Necessity for the Mountain Home 138-kV Transmission Line Project. The application includes data on 40 alternative routes that range from approximately 21 to 30 miles. Numerous other routes could be created by combining the filed segments into additional routes. The route order is numerical and does not signify any preference on LCRA TSC's part as to which route is ultimately approved.

In the application, LCRA TSC identifies Route 13 (consisting of segments X3-B-F-I-U3-V3-Z3-Q-A1-B1-F1-H1-T4-Sub Site 3-L1-O1-R1-X1-I2-Q2-U2-T2-G3-L3-W3-Q3) as the filed route that LCRA TSC believes best addresses the PUC's routing criteria. LCRA TSC based this on factors such as Route 13's relatively low estimated cost and short length, and other criteria relating to the overall manner in which Route 13 minimizes impacts to the community by using an existing transmission line corridor and following existing rights of way for a significant portion of its length, minimizing the number of habitable structures within proximity to the project, and minimizing impacts to natural and cultural resources.

All routes, route segments and substation sites included in the application —available at the link above — are available for selection and approval by the PUC. The deadline for intervention in PUC docket No. 49523 is July 15, 2019. If approved by the PUC, the transmission line and Mountain Home Substation are scheduled to be energized by December 2022.

Updated routing maps
The alternative route segments and directly affected properties can be viewed via the interactive mapping tool and the links to PDFs below. These maps are also called "Attachment 8" in the CCN application.

Interactive mapping tool: Zoom in and out on aerial imagery that depicts primary alternate transmission line route segments, potential substation sites and property line information obtained from the county appraisal district. Note: High-speed internet is recommended.

Feb. 28, 2019
Filing anticipated by May
LCRA TSC is anticipating filing a CCN amendment application for the Mountain Home project with the PUC by May 2019.

Nov. 7, 2018
Materials from second open house
LCRA TSC hosted a second open house about the Mountain Home Transmission Project, to share information with the public and answer questions about the newly added alternative route segments. Review the information below from the Nov. 7 open house in Ingram, Texas, fill out this questionnaire and submit your feedback on this project to LCRA by Nov. 23, 2018.

Exhibits [PDF]
Maps: The following maps depict routing constraints and preliminary alternate route segments and potential substation locations.
Preliminary Alternative Route Segments and Land Use Constraints maps (aerial imagery)
Map 1 – North [PDF]
Map 2 – South [PDF]
Preliminary Alternative Route Segments and Land Use Constraints maps (topographic)
Map 1 – North [PDF]
Map 2 – South [PDF]
Open house notification maps (Use this index map to determine which of the following four maps are relevant to your property.)
Map 1 - Northwest [PDF]
Map 2 - Northeast [PDF]
Map 3 - Southwest [PDF]
Map 4 - Southeast [PDF]
Landowner notification letter [PDF]
Newspaper ad [PDF]

Oct. 25, 2018
Second public open house scheduled for Nov. 7 in Ingram
LCRA TSC hosted an open house for the proposed project on June 26, 2018 in Mountain Home. Since then, LCRA TSC has expanded the study area and added additional alternative transmission line route segments, including some segments connecting to the existing Ingram Substation. Therefore, LCRA TSC is hosting a second open house for landowners located near the newly added alternative route segments. Join us on Wednesday, Nov. 7 between 6 - 8:30 p.m. in the Ingram Tom Moore High School cafeteria, 700 Highway 39, Ingram, TX. Read a PDF of the landowner notification.

June 26, 2018
Open house materials
LCRA TSC hosted an open house on June 26 in Mountain Home, Texas to share information with the public and answer questions about the project. Review the information from the June 26 open house below.

June 11, 2018
Public Open House in Mountain Home on June 26
Representatives from LCRA TSC and POWER Engineers, the routing consulting firm, will be available to answer questions and discuss specific aspects of the project. The open house will be on Tuesday, June 26 from 5:30 to 8 p.m. at the Mountain Home Volunteer Fire Department, 5475 Junction Highway, Mountain Home, TX 78058.

Preliminary alternative route segments map now available
LCRA TSC’s consultant, POWER Engineers, delineated the project study area and has begun data collection and constraint mapping. Click to view the alternative route segments map. (Maps with more detail will be on view at the June 26 open house.)

Key links


Lance Wenmohs
LCRA Siting and Certification Manager