Dayton Power and Light Skip To Main Content Show Navigation

Dayton Power and Light

Skip To Side Navigation

Clay Substation Project

DP&L has applied to build a new substation in Highland County.

Skip To Side Navigation

The project involves tapping the existing 345 kilovolt (kV) transmission line from the Stuart Substation to the Clinton Substation and building a new greenfield 345 kV substation for the purpose of interconnecting a new solar generator to the Dayton Power and Light transmission system. A "tap" is the process of connecting a new substation by running a new transmission line from the substation to an existing transmission line.

Frequently Asked Questions

Where is the Clay Substation located?

The Clay Substation will be located on North Gath Road in Clay Township, Highland County, Ohio.

The Clay Substation will be located on North Gath Rd in Clay Township, Highland County Ohio

When will the work take place?

Estimated Project Schedule

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

March 2020
  • Construction begins
September 2020
  • 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 Ohio Siting Board website to view the application and for more information. The Case Number for DP&L’s Clay Substation Project is 19-1822-EL-BLN.

To contact DP&L 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.

Page last updated February 7, 2020.