Leander–Round Rock Transmission Line Project

​​Project Update:​

  • June 6, 2017
    • The Public Utility Commission of Texas issued the final order approving the Leander-Round Rock Transmission Line Project. View the order.

  • May 4, 2017
    • ​​ The  Public Utility Commission of Texas heard public comments on the project at its May 4 meeting.

  • March 27, 2017
    • 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. ​​





  • 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)



  • July 24, 2016 ​  ​
  • April 28, 2016:

    • LCRA Transmission Services Corporation (TSC) on April 28 filed an application with the Public Utility Commission of Texas (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 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.
    • 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 Rd, and Leander Road.
    • 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 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 TS​C 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.​


    LCRA TSC’s CNN Application Files:


    Attachments to the CCN Application:

    ​ ​

    Project Area Maps:


  • April 18, 2016: 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: 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.
  • 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:
  • 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.
    • The ERCOT Board endorsed the project. Review the June 18, 2014, letter from ERCOT to LCRA TSC regarding the project endorsement as a "Tier 1" transmission project.
  • 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.​

April 28, 2016

Project Area Map

Project Overview

LCRA Transmission Services Corporation (LCRA TSC) proposes to add electric transmission infrastructure needed to serve the rapidly growing area in Williamson County from Round Rock to Cedar Park and north to Leander.

LCRA TSC is proposing to build and operate a new 138-kilovolt (kV) transmission line located in southwestern Williamson County. The proposed project consists of constructing a new 138-kV transmission line to connect two new substations to the existing Leander and Round Rock substations.

The transmission line is needed to connect the new substations to existing transmission sources. The proposed new substations are 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.


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