1 MCN INVESTMENT CORPORATION AND SUBSIDIARIES EXHIBIT 12-2 COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES (DOLLARS IN THOUSANDS) TWELVE MONTHS TWELVE MONTHS TWELVE MONTHS ENDED ENDED ENDED MARCH 31, 1999 DECEMBER 31, 1998 DECEMBER 31, 1997 (RESTATED) * (RESTATED) * -------------- ----------------- ----------------- EARNINGS AS DEFINED (1) (5) Pre-tax income (2) (4) $(187,787) $(170,668) $ 16,034 Fixed charges (3) 43,689 41,340 27,571 --------- --------- --------- Earnings as defined $(144,098) $(129,328) $ 43,605 ========= ========= ========= FIXED CHARGES AS DEFINED (1)(5) Interest, expensed $ 41,116 $ 39,393 $ 26,305 Interest, capitalized 5,596 6,133 2,521 Amortization of debt discounts, premium and expense 1,742 1,655 1,115 Interest implicit in rentals 831 292 151 --------- --------- --------- Fixed charges as defined $ 49,285 $ 47,473 $ 30,092 ========= ========= ========= Ratio of Earnings to Fixed Charges 1.45 ========= Coverage Deficiency (6) (7) $ 193,383 $ 176,801 ========= ========= * Certain amounts have been restated primarily to record cost of gas expense, including trading losses, in the appropriate accounting periods as described in Note 2 to the Consolidated Financial Statements. (1) Earnings and fixed charges are defined and computed in accordance with Item 503 of Regulation S-K. (2) This amount represents the aggregate of (a) the pre-tax income from continuing operations of MCN Investment and its majority-owned subsidiaries, (b) MCN Investment's share of pre-tax income of its 50% owned companies, and (c) any income actually received from less than 50% owned companies. (3) Fixed charges added to earnings are adjusted to exclude interest capitalized during the period. (4) In 1998, MCN Investment recorded two unusual charges, consisting of property write-downs and restructuring charges, totaling $141,872,000 pre-tax ($92,217,000 net of taxes). (5) MCN has decided to sell its E&P properties and accordingly has classified this segment as a discontinued operation. Therefore, for purposes of calculating the Ratio of Earnings to Fixed Charges, E&P is excluded from the ratio for all periods presented. (6) Earnings for the twelve-month period ended December 31, 1998, were not adequate to cover fixed charges. The amount of the coverage deficiency was $176,801,000. The Ratio of Earnings to Fix Charges excluding unusual charges would have been .26. (7) Earnings for the twelve-month period ended March 31, 1999, were not adequate to cover fixed charges. The amount of the coverage deficiency was $193,383,000. The amount of the coverage deficiency excluding unusual charges would have been $51,511,000.