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Sister Lakes Upgrades Project

The Sister Lakes Upgrades Project will strengthen the current electric transmission system in Western Michigan. Indiana Michigan Power (I&M) will build new power lines and substations, as well as update existing facilities to provide a reliable flow of electricity to its customers. The $45 million investment is critical for improved reliability and to accommodate for the region’s future growth.

Project components include:

  • Building two new substations (Keelette and Rothadew)
  • Constructing 7 miles of new 69 kV transmission line
  • Rebuilding 10 miles of 34.5 kV line to 69 kV
  • Constructing one new 1 mile 69 kV lines to the existing Sister Lakes Substation

Fact Sheet

News Releases



Proposed Structures

I&M will build new steel, monopole structures ranging between 70 to 90 feet in height. The structures will be placed in the center of a 60-100 foot wide right-of-way corridor (depending on line voltage).

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.