Oklahoma Natural Gas, founded in 1906, is the cornerstone of one of the oldest corporations in Oklahoma. The history of Oklahoma Natural Gas and its parent company, ONEOK, is closely aligned with the history of the state. Its business is supplying energy that improves the quality of life and helps companies thrive and grow. The industry is evolving. There is greater competition and greater customer choice. These changes will yield exciting new opportunities to serve the customers who have trusted Oklahoma Natural Gas for generations as their reliable source of natural gas. Oklahoma Natural Gas serves approximately 800,047 residential, commercial and industrial customers in Oklahoma. The company has affiliates that operate transmission and gathering operations in Oklahoma that include 2,348 miles of pipeline and five strategically-located underground storage facilities, also located in Oklahoma.