Transmission Line Project in Iowa: Key Details and Statistics

Strategic Insights -

Iowa Public Utilities Commission has issued detailed documents for three separate transmission line projects, connecting the Sycamore substation in Johnston to the Bondurant substation in Altoona, the Bondurant substation to the Montezuma substation in Poweshiek County, and the DPS substation in Pleasant Hill to the Bondurant substation. The projects involve the construction of 345,000 Volt Nominal (362,000 Volt Maximum) electric transmission lines with distinct endpoints and termini. The total distance of the transmission lines varies, with the longest line spanning approximately 6.85 miles.

Key Takeaways:

  • The transmission lines are located in Polk and Poweshiek counties, with distinct endpoints and termini.
  • The lines are designed to operate at 345,000 Volt Nominal (362,000 Volt Maximum) and are part of MidAmerican Energy Company's existing network.
  • The total distance of the transmission lines varies, with the longest line spanning approximately 6.85 miles.
  • The Bondurant to Montezuma line spans approximately 5.66 miles, while the DPS to Bondurant line spans approximately 1.01 miles.
  • The lines will connect distinct substations, including the Sycamore substation in Johnston, the Bondurant substation in Altoona, the Montezuma substation in Poweshiek County, and the DPS substation in Pleasant Hill.

Statistics:

  • Total distance of the transmission lines: 6.85 miles (Bondurant to Sycamore), 5.66 miles (Bondurant to Montezuma), and 1.01 miles (DPS to Bondurant).
  • Voltage rating: 345,000 Volt Nominal (362,000 Volt Maximum).
  • Number of transmission lines: 3 distinct lines.
  • Location of transmission lines: Polk and Poweshiek counties, Iowa.

Sources:

  • Iowa Public Utilities Commission, EXHIBIT A 345,000 VOLT NOMINAL (362,000 VOLT MAXIMUM) ELECTRIC TRANSMISSION LINE, Filed with the Iowa Utilities Board on February 8, 2022, E-21229.