Leander–Round Rock Transmission Line Project

LCRA TSC is building a new 138-kilovolt (kV) transmission line located in southwestern Williamson County. The project consists of constructing a new 138-kV transmission line to connect two new substations to the existing Leander and Round Rock substations. The Public Utility Commission of Texas (PUC) approved the project in June 2017.

This project addresses the need for additional electric transmission infrastructure to serve the rapidly growing area in Williamson County from Round Rock to Cedar Park and north to Leander. The new transmission line will connect the new substations to existing transmission sources.

The new substations will be located between two 138-kV transmission corridors in an area of Williamson County with no transmission service. The area of Williamson County north of Austin and between IH-35 and U.S. Highway 183 is one of the fastest-growing areas in the state. The growth has significantly increased electric demand. Additional electric infrastructure is required to maintain safe and reliable electric service to this area.

​​​Project Updates:

Sept. 4, 2018
Real estate acquisitions and transmission line design underway

LCRA TSC is acquiring easements to construct, operate and maintain the new line, and will be finalizing the design of the transmission line in the coming months. Anticipated construction start dates (weather permitting) are: December 2018 for substations and January 2019 for the new transmission line.

June 6, 2017
PUC approves the project

The Public Utility Commission of Texas issued the final order approving the Leander-Round Rock Transmission Line Project. View the order.

May 18, 2017
PUC selects route for transmission line

The Public Utility Commission of Texas approved Route LHO-1. See the map of the approved route.

May 4, 2017
PUC hears public comments

The Public Utility Commission of Texas heard public comments on the project at its May 4 meeting.

March 27, 2017
Proposal for decision available online

The Texas State Office of Administrative Hearings administrative law judges on March 22 issued their proposal for decision (PFD) in the Leander-Round Rock Transmission Line CCN case (PUC Doc. 45866).  The PFD can be viewed here.

Nov. 11, 2016
Final Intervenor Map - Sheet 1
Final Intervenor Map - Sheet 2
Final Intervenor Map - Sheet 3
Final Intervenor Table [XLS]

Oct. 24, 2016
Revised documents

Revised Cost Estimates by Route (includes intervenor routes)
Revised Table​​: Land Use and Environmental Data for the Primary Route Evaluation (includes intervenor routes)

Rebuttal testimony by subject matter experts
Rebuttal Testimony of Sergio Garza
Rebuttal Testimony of Lisa Meaux
Rebuttal Testimony of Jessica Melendez
Rebuttal Testimony of Christian Powell

Sept. 21, 2016
Revised Cost Estimates by Route (Includes Intervenor Routes)
Revised Cost Estimates by Segment

Sept. 6, 2016
Revised Cost Estimates by Route​ (Includes Intervenor Routes)
Revised Table 5-1​​: Land Use and Environmental Data for the Primary Route Evaluation (Includes Intervenor Routes)

Aug. 11, 2016
Revised Cost Estimates by Route
Revised Cost Estimates by Segment
Substation ROW Cost Removal Table

July 24, 2016
Final direct testimony by subject matter experts

Final Direct Testimony of Sergio Garza
Final Direct Testimony of Lisa Meaux
Final Direct Testimony of Jessica Melendez
Final Direct Testimony Christian Powell

April 28, 2016
Application filed with the Public Utility Commission of Texas

LCRA TSC on April 28 filed an application with the PUC to amend its Certificate of Convenience and Necessity (CCN) for the Leander-Round Rock Transmission Project. The application includes data on 31 alternate routes that range from approximately 12 to 21 miles long and are estimated to cost from $67.8 million to $99.6 million (including the proposed transmission and substation facilities). 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 its application, LCRA TSC identifies Route 31 (consisting of links D-F-X5-Z5-A6-C6-F6 (Substation Site 2-8)-M-P-Q-Q4-V-W-T4-X-J1-A5-L1-P1-T1-V5-D2-(Substation Site 1-7)-K4-J2-Q2-S2-Y2-Z2-P5-B3-C3-E3-G3-I3-J4) as the filed route that LCRA TSC believes best addresses the routing requirements of the Public Utility Regulatory Act and the regulations of the Public Utility Commission of Texas.

The identification of Route 31 as the route that best addresses the PUC’s routing criteria was based significantly on its relatively low estimated cost and input provided by local elected officials, including resolutions adopted by the cities of Leander, Cedar Park and Round Rock, and on LCRA TSC’s evaluation of the overall manner in which Route 31 impacts the community by using existing transmission line corridor and following existing rights of way for a significant portion of its length, minimizing newly affected habitable structures within proximity to the project, and avoiding the Brushy Creek environmentally sensitive area. Use the interactive mapping tool to view alternate route segments and property line information (high-speed internet access is recommended).

LCRA TSC hosted two open houses in Cedar Park and Leander in October 2015 to gather input and inform stakeholders about the project. Over 615 people attended one or both of the open houses. Since the open houses, LCRA staff met with numerous local and state elected officials and school districts, school classes, municipal utility districts, and developers and commercial property owners. LCRA staff have also met with hundreds of landowners and homeowners associations. Subsequent to the open houses, LCRA TSC received more than 1,200 emails from interested parties and stakeholders. The cities of Leander, Cedar Park and Round Rock all passed resolutions generally supporting a transmission line route for the project along FM 1431, Sam Bass Road and Leander Road.

The application identifies 16 possible alternate substation sites; eight in each of two substation siting areas. Portions of some of the proposed route alternatives include rebuilding existing LCRA TSC transmission lines located north of the Round Rock substation.

In conjunction with filing the application on April 28, 2016, LCRA TSC mailed letters to all landowners whose land is crossed by an alternative route or who own property located within at least 300 feet of an alternative route. The notices include information about how those property owners can participate in the proceeding. LCRA TSC will also publish public notifications in area newspapers as required by PUC regulations. On April 28, 2016, LCRA TSC also provided notices to municipal, county, state and federal elected officials. The intervention deadline is June 13, 2016. If approved by the PUC, the transmission line, Substation 1 and Substation 2 are scheduled to be energized by December 2019.

CCN application

Application attachments
Environmental Assessment and Alternative Route Analysis (EA)
Tables 5-1 and 5-2: Land Use and Environmental Data for the Primary Route Evaluation
Figure 5-1 Habitable Structures & Other Land Use Features Map (Sheet 1) (Sheet 2)
Figure 4-27 Primary Alternative Routes (Sheet 1) (Sheet 2)

Project Area Maps

April 18, 2016
PUC assigns docket number

The PUC assigned docket number 45866 to LCRA TSC’s application to amend its CCN. LCRA TSC plans to file its application the week of April 25, and will post its full application on this page. LCRA TSC also will send an email update to interested stakeholders when the CCN application is filed.

Feb. 24, 2016
Application filing timeframe announcement

LCRA TSC anticipates filing a CCN application for the Leander-Round 138-kV Transmission Line Project Rock project in the April-May timeframe. A few days before the application is filed, LCRA TSC will obtain a docket number for the project from the PUC.

On March 1, LCRA TSC anticipates filing a CCN application for the Zorn-Marion 345-kV Transmission Line Project in Guadalupe County. The PUC has assigned Docket No. 45601 to the Zorn-Marion CCN application. The Zorn-Marion CCN application is unrelated to the Leander-Round Rock project.

Feb. 2, 2016
LCRA General Manager Phil Wilson issues an update on the Leander-Round Rock 138-kV electric transmission line project to interested stakeholders. Read the letter.

January 2016
LCRA TSC continues evaluating potential route segments for this project and updates the project FAQs.

2015 Updates

  • December 2015: LCRA TSC continues in the assessment phase of the project. At this time, LCRA TSC has not submitted any routes to the Public Utility Commission of Texas (PUC). LCRA TSC expects to file its application with the PUC in spring 2016.
  • November 2015: On Nov. 19, the Customer Protection Staff of the PUC opened Docket No. 45364 to receive comments on the proposed line. The docket will be a repository for comments filed at the PUC before LCRA TSC files its Certificate of Convenience and Necessity application, which is expected in spring 2016. When LCRA TSC files its application, any comments filed in Docket No. 45364 will be moved to the new docket that will be opened for the filing of LCRA TSC's application.
  • October 2015: Open house details and materials
    • LCRA TSC hosted two open houses on the proposed Leander-Round Rock 138-kV Transmission Line Project. The open houses were held Tuesday, Oct. 13, at the Austin Sports Center of Cedar Park, 1420 Toro Grande Blvd., and Wednesday, Oct. 14, at the Leander Independent School District Wiley Middle School Cafeteria, 1526 Raider Way. Potentially affected landowners and elected officials were invited to learn more about the project and provide input on the preliminary route segments and alternative substation sites. Potentially affected landowners are those listed on county tax rolls as owners of land within 300 feet of the centerline of any proposed preliminary route segment. Open house notices were published in area newspapers. The information LCRA TSC provided at the Oct. 13 and 14 open houses include:


2014 Updates

  • Late 2014/early 2015: LCRA TSC's consultant, Power Engineers, delineated the project study area and began data collection and constraint mapping.
  • LCRA TSC sent letters to local, state and federal officials and agencies asking for information that could affect the transmission line route in the project area.
  • August 2014: LCRA TSC selected Power Engineers, an engineering and environmental consulting firm, to conduct the routing and environmental assessment phase of the project, which includes:
    • Delineation of the project study area.
    • Data collection.
    • Environmental and land use constraint mapping.
    • Identification of preliminary route segments and alternate sites for the new substations.
  • LCRA TSC met with city and county governmental stakeholders seeking information that could affect the transmission line routing in the project area.
  • June 2014: Electric Reliability Council of Texas staff presented its independent review findings to the ERCOT Board of Directors for review.
  • February–May 2014: ERCOT conducted an independent review of the project, including assessment of 13 possible project alternatives and/or endpoint possibilities.
    • ERCOT presented its independent review findings to LCRA TSC, the ERCOT Regional Planning Group and ERCOT Technical Advisory Committee.
    • The LCRA TSC Board of Directors approved funding for the project in the fiscal year 2015 capital plan.
  • October 2013–February 2014: LCRA TSC and Pedernales Electric Cooperative (PEC) representatives met with city, county and state elected officials to discuss the need for the new substations and transmission line.
    • LCRA TSC and PEC discussed the proposed project with LCRA regional council members at their meeting in Round Rock. Regional council members from Williamson County were invited to attend.
    • LCRA TSC submitted the Leander-Parmer-Round Rock Transmission Line Addition project to the ERCOT for review.
    • ERCOT designated the project as "Tier 1" – a project costing more than $50 million that requires independent review by ERCOT and endorsement by the ERCOT Board of Directors.

As the project progresses, LCRA TSC will continue to provide updates on this webpage.