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DOUBLE CREEK TO SWITCH PRIME 138kV TRANSMISSION LINE PROJECT

To continue to provide safe and reliable electric service in this area, Oncor Electric Delivery Company LLC (Oncor) is proposing to construct a double-circuit 138 kilovolt (kV) transmission line using concrete monopoles. The proposed transmission line will extend from Oncor’s Double Creek Substation to Oncor’s Switch Prime Substation.  The in-progress Switch Prime Substation will be located approximately 925 feet south-southwest of the intersection of Windy Park Drive and Parkfield Circle in the City of Round Rock.  The Project may range from approximately 0.9 to 1.5 miles in length and is located entirely within Williamson County, Texas. 

 

Public Meeting – Notice of the public meeting was published in the following newspaper on the specified date:




NewspaperCountyPublish Date
Hill Country News WeekenderWilliamson3/26/2026

One public participation meeting will be held for the project.

  • Wednesday, April 1, 2026

    Cedar Ridge High School Cafeteria

    2801 Gattis School Road

    Round Rock, Texas 78664

    6:00 PM - 8:00 PM

Public Participation Meeting materials handed out at the Public Meetings are available here. Public meeting materials reflect information that was accurate at the time of the meetings and may be updated when the application is filed.


PROJECT MAPS

You can download a copy of the application’s filed Alternative Route Links and Land Use Constraints map to locate your property in the link below.

INTERACTIVE MAP

Explore the preliminary transmission route links using our interactive map. This tool allows you to view route links, nearby parcels and other project details in an easy-to-navigate format.


Estimated Project Timeline

 

Application Filing – Anticipated to be filed in August 2026.

PUC Decision – Anticipated by March 2027.

 

Oncor Representatives can be contacted regarding the Double Creek to Switch Prime 138 kV Transmission Line Project at

214-486-3560 or transmissionprojects@oncor.com.