Ottumwa-Iowa/Missouri Border Transmission Project

Reliable, sustainable, efficient energy is critical to the quality of life we enjoy. To improve electric reliability, enable more electric generating sources to connect to customers, and meet the region’s growing energy demands, ITC is preparing to build a new high-voltage electric transmission line in southern Iowa.

The Ottumwa-Iowa/Missouri Border 345,000-volt (345 kV) Transmission Project is part of a network of new 345 kV transmission lines planned and constructed by ITC Midwest (ITC) and MidAmerican Energy Co. to serve the region. The two companies will each build a portion of the line from the Ottumwa Generating Station near Chillicothe, Iowa, approximately 40 miles south to the Iowa-Missouri border. The line will interconnect with a line being developed by Ameren Transmission Company that will span another 100 miles to the south in Missouri.

ITC Midwest has proposed starting construction in 2017 with completion in 2018.

map_OGS-Border

Multiple Benefits
The Ottumwa-Border line is a portion of one of 17 transmission projects that MISO, the independent transmission organization for 15 U.S. states and the Canadian province of Manitoba, studied and designated as a “Multi-Value Project” (MVP). The Ottumwa-Border line will bring four major types of benefits to Iowa and the rest of the MISO region: improved reliability, expanded access to generation sources, increased system efficiency, and economic investment.

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PROJECT PROFILE
 

  • How big will this line be?
    Depending on the terrain along the line route, the new tubular steel poles will be approximately 120 to 170 feet tall and will be spaced approximately 800 and 1,100 feet apart. The structures will sit on concrete foundations that are between eight and 14 feet in diameter.
  • How was this route chosen?
    The primary factor in the line route is the location of the Ottumwa Generating Station substation and the connection point with the Ameren line at the Iowa-Missouri border. To determine an appropriate route to connect the two substations, ITC Midwest considered all of the factors mandated by Iowa Code §478.18(2) and Section 11.1(7) of the Iowa Administrative Code.
  • What is the timing for construction?
    Construction will depend on the timetable for acquiring landowner easements and obtaining IUB approval. ITC Midwest has proposed starting construction in 2017 with completion in 2018.

 
 
 

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