AES Indiana is proposing a new, approximately 10-mile, 345-kilovolt (kV) transmission line: a high-voltage line used to move large amounts of power efficiently over long distances.

This line will connect the Antioch Substation near Monrovia to the Blue Bluff Substation near AES Indiana’s Eagle Valley Generating Station.

 

Why is this project needed?

Morgan County is growing. New homes, businesses and community facilities are increasing the amount of electricity the system must deliver. To support that growth and continue providing reliable service, AES Indiana is planning upgrades to strengthen the backbone of the regional electric grid. 

Map of proposed Morgan County transmission line routes in Indiana, showing numbered segments and future substations.

Interactive project map and feedback form

We invite you to view the interactive project map and provide your feedback.

Project map

This project covers:

  • Morgan County
  • Town of Monrovia
  • Town of Mooresville
  • Town of Brooklyn
  • Jefferson Township
  • Clay Township
  • Gregg Township
  • Monroe Township
  • Washington Township
  • Brown Township

Details 

What we’re building:

  • Antioch substation
  • An approximately 10-mile, 345 kV transmission line connecting the Antioch substation to the Blue Bluff substation
  • Blue Bluff substation to interconnect with the generation at the Eagle Valley Generating Station

Typical structures 

The project involves the use of steel poles with heights ranging from approximately 115 feet-195 feet and an approximate right of way (ROW) easement width of 200 feet. 

Illustration of a typical 345 kV galvanized steel monopole with multiple crossarms. Labeled details describe approximate height of 115 to 195 feet, span of 700 to 1,000 feet, six to eight structures per mile, minimum conductor clearance of 26.1 feet, foundation width of 6 to 11 feet, and a typical easement width of 200 feet.

Timeline 

Morgan County transmission line upgrade project

Project schedule timeline showing major phases from 2025 through 2030, including planning and siting in winter 2025 through spring 2026, project announcement and open houses in spring through summer 2026, field surveys and engineering from fall 2026 through summer 2028, right‑of‑way communications during the same period, facility construction from fall 2028 through fall 2029, facilities placed in service in fall 2029, and right‑of‑way restoration from fall 2029 through summer 2030.