MidAmerican Energy has been working with The City of Johnston to determine a location for a new substation to serve the growth in electrical needs within the Central Part of the Johnston Community. At their meeting on November 9th, the Johnston Planning and Zoning Commission considered and approved a Special Use Permit to allow for an electric substation at 6750 Pioneer Parkway.
Johnston is currently served by three substations, the Sycamore Substation at NW 62nd Avenue and NW Beaver Drive, the NW 100th Street Substation at NW 54th Avenue and NW 100th Street and the Highway 141 Substation located north of NW 70th Avenue along Highway 141 in Grimes. These three substations are spread out across the community and create a gap in coverage for the central part of the community. To interconnect the electric grid, each substation needs to be connected to two other substations by high voltage transmission lines, which made it difficult to find the appropriate location for the fourth substation.
It was determined that a substation at 6750 Pioneer Parkway would reduce that distance of the transmission lines needed. To complete this project two lines would be constructed parallel to each other and would span from the proposed substation southerly to the existing transmission lines that run east/wet through the community. The remaining lines would be located on the existing towers, with one extending westerly to the NW 100th Street Substation and one extending easterly to the Sycamore Substation.
Follow the link below for more information on the proposed MidAmerican Energy Substation.