This project examines the social history of the Susquehanna Steam Electric Plant (SSEP), a nuclear plant built by Pennsylvania Power & Light Company on the North Branch of the Susquehanna River in Luzerne County. It archivally documents work involved in constructing, maintaining, and renewing nuclear energy infrastructure in this post-extraction anthracite coal mining region. SSEP slipped quietly online during the moratorium on new nuclear plant construction occasioned by the highly publicized accident 65 miles downstream at Three Mile Island (TMI) in 1979. Legacy impacts of mining remain woven into everyday life in this deindustrialized region settled by Welsh, German, eastern and southern European immigrants. Their descendants are subject to the hollowing out of local governance, changing characteristics and terms of “energy citizenship” (Kahle 2024), and political and social antagonisms between coal and black powder, natural gas, and nuclear power. These social differences are smoothed over when we speak of “steam energy.”