. . . EXHIBIT 12-20 THE DETROIT EDISON COMPANY COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES Twelve Months Ended December 31 ------------------------------------------------------------------------ 2003 2002 2001 2000 1999 -------- -------- -------- -------- -------- (Millions of Dollars) EARNINGS: Pretax earnings ................................ $ 397 $ 534 $ 320 $ 586 $ 645 Fixed charges .................................. 294 322 314 311 322 -------- -------- -------- -------- -------- $ 691 $ 856 $ 634 $ 897 $ 967 -------- -------- -------- -------- -------- FIXED CHARGES: Interest expense ............................... $ 284 $ 319 $ 306 $ 277 $ 288 Interest factor of rents ....................... 10 3 8 34 34 -------- -------- -------- -------- -------- $ 294 $ 322 $ 314 $ 311 $ 322 -------- -------- -------- -------- -------- Ratio of earnings to fixed charges ................. 2.35 2.66 2.02 2.88 3.00 ======== ======== ======== ======== ========