South Bend 138 kV Transmission Line Rebuild Project

    Indiana Michigan Power (I&M) will upgrade the 138-kilovolt (kV) transmission line that connects the New Carlisle Substation to the Twin Branch Substation. The improvements in St. Joseph County are essential to ensure continued reliable electricity is available for customers. The existing transmission infrastructure has reached an age where it is in need of replacement to improve reliability for area customers.

    Rebuilding approximately 20 miles of double-circuit 138-kV transmission line, rebuilding 5 miles of single-circuit 138-kV line and upgrading local substations decrease potential outages and speed recovery of service when outages occur. The $61 million investment improves reliability for customers across the region.

    Project Updates

    Fall 2017:  Indiana Michigan Power (I&M) hosted a public informational open house in September in South Bend. During the open house, community members and landowners offered input, asked questions of project team members and learned more about the project. Right-of-way agents have begun contacting affected landowners to update and supplement easements, where needed.

    Project Releases

    Fact Sheet



    I&M will replace existing lattice towers with steel monopole structures ranging from 110 to 120 feet in height. The structures will be placed in the existing 100-foot wide right-of-way corridor, where possible.

    I&M is committed to meeting the energy needs of customers while protecting the environment and natural beauty of the region.

    *Exact structure, height and right-of-way may vary

    * 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.