History of Atmos Energy in Timeline

By Popular Timelines Editorial Team · Updated: April 1, 2026

Atmos Energy Corporation, based in Dallas, Texas, is a major natural gas distributor in the U.S. serving approximately three million customers across more than 1,400 communities spanning nine states. Their distribution network stretches from the Blue Ridge Mountains to the Rocky Mountains, focusing exclusively on natural gas distribution.

1906: Beginnings in Texas

In 1906, the history of Atmos Energy Corporation began in the Panhandle of Texas.

1981: Incorporation

In 1981, the company was incorporated and became a fully regulated natural-gas-only distributor.

1983: Energas Spin-off

In 1983, Energas, the natural gas distribution division of Pioneer, was spun off and became an independent, publicly held natural gas distribution company.

October 1988: Name Change and NYSE Listing

In October 1988, Energas changed its corporate name to Atmos Energy Corporation and its stock began trading on the New York Stock Exchange under the ticker symbol "ATO".

2000: Sale of Gaffney Operations

In 2000, Atmos sold the Gaffney, South Carolina operations of United Cities Gas to Piedmont Natural Gas.

October 2004: Acquisition of TXU Gas Company

In October 2004, Atmos Energy grew through acquisitions, with its most recent acquisition being the distribution and pipeline operations of TXU Gas Company.