Aquila, Inc., an integrated electric and natural gas utility company, engages in the generation, transmission, and distribution of electricity in the United States. It also owns and operates gas transmission and distribution lines, and trades in unregulated energy. As of December 31, 2006, the company served approximately 396,829 electricity customers in Colorado and Missouri, and had 1,843 mega watts of generation and 14,992 pole miles of electric transmission and distribution lines. As the above date, its gas utilities consisted of 516 miles of intrastate gas transmission pipelines and 11,283 miles of gas distribution mains and service lines. The company was founded in 1917 under the name Missouri Public Service Company and changed its name to UtiliCorp United, Inc. in 1985. Further, it changed its name to Aquila, Inc. in 2002. The company is headquartered in Kansas City, Missouri.