Patina - Mirkwood Transmission Project

AEP Transmission representatives plan power grid upgrades in Madison County. The project involves building two stations and two approximately 12.5-mile transmission lines to provide power to a customer facility and help meet the area’s growing electrical load demand.

The project involves:

• Building Patina Station near the intersection of State Route 38 and Rosedale-Plain City Road and Mirkwood Station near the intersection of State Route 161 and Cemetery Pike.
• Building two parallel 12.5-mile, 345-kilovolt transmission lines connecting Patina and Mirkwood stations.
• Transmission improvements connecting AEP Transmission and customer facilities to the power grid.

*This project requires Ohio Power Siting Board (OPSB) approval.

October 2026: AEP Transmission representatives selected a proposed line route after reviewing input gathered through landowner feedback, virtual and in-person open houses and initial field studies. The project team plans to submit an application to the Ohio Power Siting Board (OPSB) in early 2027 seeking approval for the project. Pending approval, crews plan to begin construction in spring 2027 and conclude in late 2029.

Summer 2026: The project team hosted an in-person open house on April 30 to discuss the project and obtain feedback from the community. A virtual open house is available on the right side of the page.

As the project continues to develop, field studies are needed to help the project team decide on the final line route, as well as support engineering and environmental efforts. As part of this work, landowners may be contacted by OR Colan, Inc. (ORC), the right-of-way company working on behalf of AEP Transmission. Field studies do not confirm a line route but are a tool used to help the team during the evaluation process.