Exhibit 12 TXU US HOLDINGS COMPANY COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES, AND RATIO OF EARNINGS TO COMBINED FIXED CHARGES AND PREFERRED DIVIDENDS Year Ended December 31, ---------------------------------------------------------- 2001 2000 1999 1998 1997 ---- ---- ---- ---- ---- Millions of Dollars, Except Ratios EARNINGS: Net income $ 882 $ 895 $ 779 $ 798 $ 772 Add: Total federal income taxes 399 393 356 486 410 Fixed charges (see detail below) 474 478 519 568 619 ------ ------- ------ ------ ------ Total earnings $1,755 $1,766 $1,654 $1,852 $1,801 ====== ====== ====== ====== ====== FIXED CHARGES: Interest expense $ 383 $ 382 $ 425 $ 476 $ 527 Rentals representative of the interest factor 30 27 26 24 22 Distributions on preferred trust securities of subsidiaries* 61 69 68 68 70 ------ ------- ------ ------ ------ Fixed charges deducted from earnings 474 478 519 568 619 ------ ------- ------ ------ ------ Preferred dividends of registrant (pretax)** 15 14 15 21 41 ------ ------- ------ ------ ------ Fixed charges and preferred dividends $ 489 $ 492 $ 534 $ 589 $ 660 ====== ====== ====== ====== ====== RATIO OF EARNINGS TO FIXED CHARGES 3.70 3.69 3.19 3.26 2.91 ==== ==== ==== ==== ==== RATIO OF EARNINGS TO COMBINED FIXED CHARGES AND PREFERRED DIVIDENDS 3.59 3.59 3.10 3.14 2.73 ==== ==== ==== ==== ==== * Distributions on preferred trust securities are deductible for tax purposes. ** Preferred dividends multiplied by the ratio of pre-tax income to net income.