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    Airport-Union 138kV transmission line project

    Dayton 2022
    Airport-Union 138kV transmission line project

    AES Ohio is proposing to construct a single circuit 138 kilovolt (“kV”) transmission line.

    The transmission line will be extended from AES Ohio’s Airport substation to Pioneer’s Union substation, located in Monroe Township, within Miami County, Ohio. This project is part of the upgrades to the electric system in this area required to meet the needs of existing and new customers in this developing region near Dayton International Airport.

    Frequently asked questions
    Where is the project located?

    The Airport-Union 138kV transmission line project is located off North Montgomery County Line Road East in Monroe Townships within Miami County, Ohio.

    Airport-Union 138kV transmission line project


    When will the work take place?

    Estimated project schedule

    November 2022
    • File Construction Notice Application with Ohio Power Siting Board (OPSB)
    January 2023
    • OPSB approval

    May 2023
    • Construction begins
    December 2023
    • Project in-service

    Bold-italic text indicates the current project stage

    Will electric service be interrupted?

    During construction, customers should not notice interruption of their electric service. If an outage is required for a short period, the affected customer(s) will be notified before the outage to limit the inconvenience.

    Where can I get more information?

    Visit the Ohio Siting Board website to view the application and for more information. The case number for the AES Ohio Airport to Union 138kV transmission line project is 22-0946-EL-BLN.

    To contact AES Ohio about the project or request an electronic copy or hard copy of the application, please leave a message at 937-331-4314 or email You will receive a response within 1-2 business days.

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