Counties

Below is a complete listing of all Ohio Historical Markers. To find a detailed marker listing including text, photographs, and locations, click on a county below. Our listing is updated by the markers program as new markers are installed and older markers are reported damaged or missing.

36-55 Piqua Nuclear Power Facility

Side A: The Piqua Nuclear Power Facility was part of the U.S. Atomic Energy Commission’s Power Demonstration Reactor Program. The program developed experimental nuclear reactors that could supplement steam generation for electricity production. In 1956, the commission accepted Director of Municipal Utilities John P. Gallagher’s proposal to build a reactor in Piqua and the following year Congress set aside $11,465,000 for the project. The Piqua Nuclear Power Facility was the first nuclear power plant of any type to be operated by a municipal utility. It reached criticality in 1963 and, for a few years, Piqua proudly called itself “The Atomic City.” The reactor was shut down due to technical issues and economic considerations in 1966. It was fully decommissioned by February 1969. The facilities were demolished in 2023.
Side B: same
Sponsors: U.S. Dept of Energy Office of Legacy Management, Ohio History Connection
Address: 919 South Main Street, 
Piqua, 
Ohio, 
45356
Location: South of relocated city bike path on the west side of the Great Miami river