 The facility opened in the early 1950s and consists of two Babcock & Wilcox cyclone boilers each with one steam turbine.Originally designed to burn Illinois Basin bituminous coal supplied by rail car or barge, the site switched to natural gas or lower sulfur Powder River Basin coal.Additionally, a 30 MW combustion turbine was added in 1967 and two 50 MW combustion turbines were added between 1972 and 1977.