AEP Transmission Announces Route Selection for Power Grid Upgrades in Madison County

GAHANNA, Ohio - After gathering input from residents and local leaders this spring, AEP Transmission and Ohio Power Company have announced a proposed route for new transmission lines in Madison County.

The Patina-Mirkwood Transmission Project will deliver power to a new customer facility, with the customer covering all costs for the connections between the substation and their site. The project also provides additional electric capacity to support future economic development and growth in the area.

The project involves upgrading the electric transmission grid by:

• Building two substations:
  • Patina Station, near State Route 38 and Rosedale-Plain City Road.
  • Mirkwood Station, near State Route 161 and Cemetery Pike.
• Installing two parallel 345-kilovolt (kV) transmission power lines, stretching about 12.5 miles each, connecting Patina and Mirkwood stations. AEP Transmission has selected a preferred route that minimizes impacts to the community and environment.
• Making upgrades that connect AEP Transmission's system and customer equipment to the electric grid.

The project team plans to submit applications to the Ohio Power Siting Board beginning in early 2027 seeking approval for the project transmission lines and stations. Pending approval, crews plan to begin construction in spring 2027 and conclude in late 2029.

For the latest project information, please visit AEPTransmission.com/Ohio/Patina-Mirkwood.

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About Ohio Power Company
Ohio Power Company is based in Gahanna, Ohio, and is a unit of American Electric Power. Ohio Power provides electricity to 1.5 million customers across 61 counties. News and information about Ohio Power can be found at OhioPowerCo.com.

About American Electric Power
American Electric Power (Nasdaq: AEP) is committed to improving our customers' lives with reliable, affordable power. We expect to invest $100 billion from 2027 through 2031 to enhance service for customers and support the growing energy needs of our communities. Our nearly 18,000 employees operate and maintain the nation's largest electric transmission system with approximately 40,000 line miles, along with more than 253,000 miles of distribution lines to deliver energy to 5.6 million customers in 11 states. AEP also is one of the nation's largest electricity producers with approximately 34,000 megawatts of diverse owned and contracted generating capacity. We are focused on safety and operational excellence, creating value for our stakeholders and bringing opportunities to our service territory through economic development and community engagement. Our family of companies includes AEP Texas, Appalachian Power (in Virginia, West Virginia and Tennessee), Indiana Michigan Power, Kentucky Power, Ohio Power, Public Service Company of Oklahoma and Southwestern Electric Power Company (in Arkansas, Louisiana, east Texas and the Texas Panhandle). For more information, visit aep.com.