1 EXHIBIT 12-4 DTE ENERGY COMPANY AND SUBSIDIARY COMPANIES COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES Year Ended December 31 ------------------------------------ 1996 1995 1994 ---------- ----------- ----------- (Thousands, except for ratio) Net income ................................ $325,311 $ 433,651 $ 419,909 --------- ---------- ---------- Taxes based on income: Current income taxes ..................... 219,143 220,730 169,381 Deferred taxes - net ..................... 16,949 78,817 110,243 Investment tax credit adjustments - net .. (15,054) (16,294) (12,826) Municipal and state ...................... 3,348 2,627 2,566 --------- ---------- ---------- Total taxes based on income ............ 224,386 285,880 269,364 --------- ---------- ---------- Fixed charges: Interest on long-term debt ............... 275,166 275,599 273,763 Amortization of debt discount, premium and expense ............................ 11,883 11,312 10,832 Other interest ........................... 4,218 9,666 11,170 Interest factor of rents ................. 34,000 29,000 28,000 --------- ---------- ---------- Total fixed charges .................... 325,267 325,577 323,765 --------- ---------- ---------- Earnings before taxes based on income and fixed charges ........................ $874,964 $1,045,108 $1,013,038 ========= ========== ========== Ratio of earnings to fixed charges ........ 2.69 3.21 3.13