Darby Generating Station is a 480 megawatt (MW), natural gas peaker plant located in Darby Township, Pickaway County near Mount Sterling, Ohio. The plant is currently owned by Lightstone Generation LLC, a 50-50 joint venture of The Blackstone Group and ArcLight Capital Partners. The plant has six units and began operations in 2001.
The project was first announced in 1999 by Dayton Power & Light (DP&L) to address projected electricity shortages.[1] The first four units of Darby began operations in 2001 with Units 5 and 6 beginning the following year at a cost of $55 million.[2][3] The total cost of the project was estimated to be at $183 million.[4] The peaker plant is connected by a 345kV power line originating from the former J.M. Stuart Station located in Adams County, Ohio.[5] In 2007, DP&L sold Darby to American Electric Power (AEP) for $102 million.[6] AEP would later sell Darby as a part of $2.17 billion deal to The Blackstone Group and ArcLight Capital Partners in 2016.[7]