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Exhibit 21
SUBSIDIARIES OF ATMOS ENERGY CORPORATION
 
Name  State of
Incorporation		  Percent of
Ownership
ATMOS ENERGY HOLDINGS, INC.
(wholly owned by Atmos Energy Corporation)		  Delaware  100%
ATMOS ENERGY KANSAS SECURITIZATION I, LLC
(wholly owned by Atmos Energy Corporation)		Delaware100%
BLUE FLAME INSURANCE SERVICES, LTD
(wholly owned by Atmos Energy Corporation)		  Bermuda  100%
ATMOS ENERGY LOUISIANA INDUSTRIAL GAS, LLC
(a limited liability company)
(wholly owned by Atmos Energy Holdings, Inc.)		Delaware100%
ATMOS ENERGY SERVICES, LLC
(a limited liability company)
(wholly owned by Atmos Energy Holdings, Inc.)		  Delaware  100%
EGASCO, LLC
(a limited liability company)
(wholly owned by Atmos Energy Holdings, Inc.)		  Texas  100%
ATMOS POWER SYSTEMS, INC.
(wholly owned by Atmos Energy Holdings, Inc.)		  Georgia  100%
ATMOS PIPELINE AND STORAGE, LLC
(a limited liability company)
(wholly owned by Atmos Energy Holdings, Inc.)		  Delaware  100%
UCG STORAGE, INC.
(wholly owned by Atmos Pipeline and Storage, LLC)		  Delaware  100%
WKG STORAGE, INC.
(wholly owned by Atmos Pipeline and Storage, LLC)		  Delaware  100%
ATMOS EXPLORATION AND PRODUCTION, INC.
(wholly owned by Atmos Pipeline and Storage, LLC)		  Delaware  100%
TRANS LOUISIANA GAS PIPELINE, INC.
(wholly owned by Atmos Pipeline and Storage, LLC)		Louisiana100%
TRANS LOUISIANA GAS STORAGE, INC.
(wholly owned by Atmos Pipeline and Storage, LLC)		Delaware100%
ATMOS GATHERING COMPANY, LLC
(a limited liability company)
(wholly owned by Atmos Pipeline and Storage, LLC)		Delaware100%
PHOENIX GAS GATHERING COMPANY
(wholly owned by Atmos Gathering Company, LLC)		Delaware100%
FORT NECESSITY GAS STORAGE, LLC
(a limited liability company)
(wholly owned by Atmos Pipeline and Storage, LLC)		Delaware100%