. . . Exhibit 12.1 Atmos Energy Corporation Computation of Pro Forma Earnings to Fixed Charges Nine months Year Ended ended June 30, September 30, -------------- -------------- 2004 2003 -------------- -------------- Income from continuing operations before provision for income taxes and cumulative effect of accounting change per statement of income $ 213,908 $ 185,224 Add: Portion of rents representative of the interest factor 2,660 3,626 Interest on debt & amortization of debt expense 99,508 130,329 -------------- -------------- Income as adjusted $ 316,076 $ 319,179 ============== ============== Fixed charges: Interest on debt & amortization of debt expense (1) $ 99,508 $ 130,329 Capitalized interest (2) 802 623 Capitalized expenses related to indebtedness (3) - - Rents 7,981 10,878 Portion of rents representative of the interest factor (4) 2,660 3,626 -------------- -------------- Fixed charges (1)+(2)+(3)+(4) $ 102,970 $ 134,578 ============== ============== Ratio of earnings to fixed charges 3.07 2.37