CPS Energy is the nation’s largest municipally owned energy utility providing both natural gas and electric service.  Acquired by the City of San Antonio in 1942, today we serve more than 717,000 electric customers and 325,000 natural gas customers in and around the seventh-largest city in the nation. We serve customers in Bexar County and portions of Atascosa, Bandera, Comal, Guadalupe, Kendall, Medina, and Wilson Counties (1,514-square-mile service area).