Calaveras Power Station, Texas

Three separate power plants located on a peninsula on Calaveras Lake, an artificial lake built in the late 1960's, which is the source of the plant's cooling water. The lake is routinely filled with treated wastewater from the San Antonio River. The plants are owned by CPS Energy, which is in turn owned by the City of San Antonio, and is said to be the largest municipally-owned electrical utility in Texas.  On site is the J. K. Spruce Power Plant with two coal-fired units, whose nameplate output capacity is 1,444MW. Also on site is the O. W. Somers Plant, a natural gas plant with a capacity of 892MW, and the J.T. Deely Power Plant, an older 871MW coal plant that closed in 2018.