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Bath-Trebein 138kV Reconductor Project

DP&L has submitted an application to the Ohio Power Siting Board to upgrade equipment on the Bath-Trebein transmission line.

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This project will provide improved grid reliability, operational flexibility, and operating capacity to the Dayton metro area by reconductoring the existing 138 kilovolt (kV) transmission that connects the Bath Substation to the Trebein Substation. Reconductoring is the process of replacing the wires on an electric circuit to allow it to carry greater electrical currents.

Specifically, the proposed project will help to prevent transmission system overloads in the Dayton metro area of the DP&L transmission system under various outage conditions, complying with mandatory Federal Energy Regulatory Commission (FERC)/ North American Electric Reliability Corporation (NERC) reliability standards.

Frequently Asked Questions

Where is the Bath-Trebein 138kV transmission line located?

The Bath-Trebein 138kV transmission line connects the Bath Substation which is located in Xenia, Greene County, Ohio to the Trebein Substation which is located in Beavercreek, Greene County, Ohio.

Map of transmission line in Greene County, Ohio connecting the Bath substation in Xenia to the Trebein substation in Beavercreek.

When will the work take place?

Estimated Project Schedule

October 2019
  • File Letter of Notification Application with Ohio Power Siting Board (OPSB)
January 2020
  • OPSB approval

March 2020
  • Construction begins
June 2021
  • Project in-service

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 OPSB website to view the application and for more information. The Case Number for DP&L’s Bath-Trebein 138kV Reconduct Project is 19-1631-EL-BLN.

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

Page last updated February 7, 2020.