EXHIBIT 12-18 THE DETROIT EDISON COMPANY COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES Year Ended December 31 2001 2000 1999 1998 1997 ---------------------------------------------------------------------- (Millions, except for ratio) EARNINGS: Pretax earnings $ 320 $ 586 $ 645 $ 678 $ 705 Fixed charges 314 311 322 311 316 ------ ------ ------ ------ ------ NET EARNINGS 634 897 967 989 1,021 ------ ------ ------ ------ ------ FIXED CHARGES: Interest expense 306 277 288 277 282 Interest factor of rents 8 34 34 34 34 ------ ------ ------ ------ ------ Total fixed charges $ 314 $ 311 $ 322 $ 311 $ 316 ------ ------ ------ ------ ------ Ratio of earnings to fixed charges 2.02 2.88 3.00 3.18 3.23 ====== ====== ====== ====== ======