The Powerhouse was built in 1907 and is located on the Main Channel Extension in Lockport, Illinois. Credits worth millions of dollars have been earned with Commonwealth Edison for millions of kilowatt hours of hydropower generated at this facility. The Powerhouse contains two turbines, each with a nameplate capacity of 6.8 megawatts, according to Inventory of Nonutility Electric Power Plants in the United States 2000, published by the United States Department of Energy.