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Public utilities

Des Moines: Iowa Public Utilities Commission Approves Transmission Line Proposal

Strategic Insights

— 2 min read

The Iowa Public Utilities Commission has approved a proposal to construct a 345kV transmission line in Lee County, Iowa. The line, which will run from ITC's Deeds Substation to Ameren Missouri's Coddington Substation, spans a total distance of approximately 2.69 miles. The transmission line will be built on private property, crossing various roads and sections of land. The east end point and terminus of the 345kV transmission line will be located at ITC's Deeds Substation in the Northeast Quarter of Section 18, Township 69 North, Range 4 West of the 5th Principal Meridian, Lee County, Iowa. The west end point of the transmission line will be connected to an ITC electric transmission line located in the Southwest Quarter of the Northeast Quarter of Section 2, Township 69 North, Range 5 West of the 5th Principal Meridian, Lee County, Iowa. The west terminus of the 345kV transmission line will be located within Ameren Missouri's Coddington Substation in Henry County, Iowa.

Key Takeaways:

  • The proposed transmission line will be a 345kV double circuit line running from ITC's Deeds Substation to Ameren Missouri's Coddington Substation.
  • The total distance of the 345kV line segments is approximately 2.69 miles.
  • The line will be built on private property, crossing various roads and sections of land.
  • The east end point and terminus of the 345kV transmission line will be located at ITC's Deeds Substation in Lee County, Iowa.
  • The west end point of the transmission line will be connected to an ITC electric transmission line in Lee County, Iowa.
  • The west terminus of the 345kV transmission line will be located in Henry County, Iowa, within Ameren Missouri's Coddington Substation.
  • The transmission line will be built in two segments: one with a nominal voltage of 345,000 Volts and a maximum voltage of 362,000 Volts, and the other with a nominal voltage of 161,000 Volts and a maximum voltage of 169,000 Volts.
  • The 161kV transmission line will also be built on private property, with a total distance of approximately 2.69 miles.

Statistics:

  • 345kV transmission line: 2.69 miles in total distance
  • 345kV transmission line: 345,000 Volts nominal voltage, 362,000 Volts maximum voltage
  • 161kV transmission line: 2.69 miles in total distance
  • 161kV transmission line: 161,000 Volts nominal voltage, 169,000 Volts maximum voltage
  • May 16, 2025: Date filed with the Iowa Utilities Commission

Sources:

  • Exhibit A Double Circuit 345,000 Volts Nominal (362,000 Volts Maximum) / 161,000 Volts Nominal (169,000 Volts Maximum) Electric Transmission Line Lee County, Iowa
  • Iowa Public Utilities Commission filing E-22549, May 16, 2025

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