• Existing Transmission Line
  • Approximate Property Boundaries
  • Transmission Line to be Built
  • Yellowjacket Substation
  • Proposed Heartland Substation

Heartland - Yellowjacket Transmission Line Project

DISCLAIMER: The property information listed here is merely advisory. Any and all property lines listed on this website are approximate, subject to revision, and non-binding. While we use the best information available to us, the property information should only be used as an estimate and in no way considered a final determination of property lines/boundaries.

AEP Texas North Company and Electric Transmission Texas, LLC plan to address the need for a stronger, more reliable transmission grid in Menard and McCulloch counties by improving local electric infrastructure. These upgrades with improvements will benefit the region by strengthening the transmission system and improving its reliability. The estimated project investment is $38 million. The final path of the line and the associated miles will be determined by the Public Utility Commission of Texas (PUCT).


Major components of the Heartland - Yellowjacket Transmission Line Project include:

  • Approximately 35 to 44 miles of new 138-Kilovolt (kV) transmission line
  • Building a new substation - Heartland Substation in Brady
  • Upgrading one existing substation - Yellowjacket Substation in Menard


The need for the project was demonstrated in August 2013 when the Brady area experienced a weather-related outage. This project will enhance the local electric grid to quicken restoration time and help provide reliable electric service to the surrounding area. Bolstering the infrastructure serving the Menard and Brady area will also support future economic growth and development.


Crews will begin construction in early 2019. The company expects to complete construction by late 2019.

The proposed transmission line will extend from the new Heartland Substation in Brady southwest to the existing Yellowjacket Substation in Menard.

FAQ Sheet

Typical Structures


The typical right-of-way width for this line will be 100 feet. In some cases, additional easement area may be necessary for specialized structures.

* The accompanying map depicts the project area. It should be noted that the map contained on this site is for information purposes only. AEP reserves the right to alter, change, or amend the map at any time without notice and AEP provides no warranty about the accuracy of content. Keep this in mind when reviewing this map. However, AEP will make all attempts to keep this map as accurate as possible. If you have any questions about the accuracy of the current map please Contact Us.