. . . Exhibit 12 Atmos Energy Corporation Computation of Earnings to Fixed Charges June 30, 2003 Three Months Ended Nine Months Ended June 30 June 30 -------------------- ------------------- 2003 2002 2003 2002 -------- -------- -------- -------- (Dollars in thousands) Income (loss) from continuing operations before provision for income taxes and cumulative effect of accounting change per statement of income $ (1,300) $ 5,173 $130,200 $103,760 Add: Portion of rents representative of the interest factor 930 948 2,671 2,832 Interest on debt & amortization of debt expense 16,043 13,823 47,679 44,304 -------- -------- -------- -------- Income as adjusted $ 15,673 $ 19,944 $180,550 $150,896 ======== ======== ======== ======== Fixed charges: Interest on debt & amortization of debt expense (1) $ 16,043 $ 13,823 $ 47,679 $ 44,304 Capitalized interest (2) 183 300 488 1,003 Rents 2,789 2,843 8,014 8,496 Portion of rents representative of the interest factor (3) 930 948 2,671 2,832 -------- -------- -------- -------- Fixed charges (1)+(2)+(3) $ 17,156 $ 15,071 $ 50,838 $ 48,139 ======== ======== ======== ======== Ratio of earnings to fixed charges 0.91 1.32 3.55 3.13