Petersburg Generating Station

Petersburg Generating Station is a major coal-fired power plant in Indiana, rated at 2.146-GW nameplate capacity. It is located on the White River near Petersburg in Pike County, Indiana, just upstream from a much smaller coal-fired Frank E. Ratts Generating Station. Petersburg G.S. is owned and operated by AES Indiana.
Units 1, 2, and 3, rated at 281.6, 523.3, and 670.9 Watt#Conventions in the [electric power industry|MWe], were launched into operation in 1967, 1969, and 1977 respectively. Unit 4, rated at 670.9 MWe, was launched in 1986. There are also three minor oil-burning internal combustion units, rated at 2.7 MWe each, all launched in 1967.
The coal is supplied from Bear Run Coal Mine and Gibson Coal Mine. The station plans to switch to natural gas by 2026. A 200 MW / 800 MWh Battery [energy storage system|grid battery] started operating in 2025.