Skip to Content

Stuart Substation Expansion

Transmission Investments

Reliability is a responsibility that Duke Energy takes very seriously. We are working on building a smarter energy grid, which includes upgrading the electric transmission system in Adams County.

Duke Energy Ohio is making improvements to Stuart Substation in Sprigg Township as part of its separation from the former J.M. Stuart Station power plant. Duke Energy Ohio retains ownership of the 138-kilovolt (kV) substation switchyard. The improvements include expanding the substation as well as reconfiguring and upgrading equipment inside the expanded substation to improve reliability.

Project Need

The expansion project will modernize the substation to increase the reliability of the energy network, as well as meet regulatory standards to serve homes, schools, hospitals and businesses in the area. This project is part of Duke Energy’s long-range planning to identify and carry out enhancements to the electrical framework that will address reliability for our communities now and in the years ahead.

Project Description

Construction will involve expanding the fence approximately 135 feet to the south of the existing fence, as well as adding a fence to separate the Duke Energy-owned equipment from assets operated by other electric transmission utilities that share the substation. The project includes installing a new control enclosure, relocating protection and control equipment, and adding two new access drives to the reconfigured Duke Energy Stuart Substation.

Duke Energy Ohio will relocate a 250-foot section of 138-kV line to an existing steel monopole structure located to the north of Stuart Substation. All construction will take place on Duke Energy-owned property or in an easement owned by Duke Energy.

Installation of concrete foundations for the project is planned for January 2022. Construction is scheduled for January 2022 through June 2023.

A notice to construct, operate and maintain this electric transmission line project is now pending before the Ohio Power Siting Board (OPSB) in Columbus, Ohio. View the copy of the application here. A paper copy will be provided upon request. To obtain a paper copy, please contact 888.827.5116.

Benefits to the Community

  • Maintains a robust system for supplying and delivering energy, which is integral to ensuring the continued economic growth and prosperity of the city.
  • Improves power quality and reliability for decades to come by protecting the energy grid.

Have a Question or Comment?

Email us at

or call 888.827.5116.