Commonwealth Edison Company and Subsidiary Companies Consolidated Computation of Ratios of Earnings to Fixed Charges and Ratios of Earnings to Fixed Charges and Preferred and Preferance Stock Dividend Requirements (Thousands of Dollars) Year Ended December 31, Jan. 1- Oct. 20- ------------------------------------------------------ Oct. 19, Dec. 31, 1997 1998 1999 2000 2000 ---------------- ----------------- ---------------- ----------------- --------------- Net income $ (160,138) $ 594,206 $ 650,308 $ 603,000 $ 133,000 ---------------- ----------------- ---------------- ----------------- --------------- Net provisions for income taxes and investment tax credits deferred charged to -- Operations and other income $ (98,543) $ 350,926 $ 327,933 $ 220,584 $ 99,215 ---------------- ----------------- ---------------- ----------------- --------------- $ (98,543) $ 350,926 $ 327,933 $ 220,584 $ 99,215 ---------------- ----------------- ---------------- ----------------- --------------- Fixed charges -- Interest on debt, including amortization of debt discount, premium and expense $509,700 $ 488,773 $ 577,650 $ 472,630 $ 127,983 Estimated interest component of nuclear fuel and other lease payments, rental and other interest 70,468 74,568 65,705 11,743 3,180 Preferred securities dividend requirements of subsidiary trusts 28,860 29,710 29,710 23,520 6,190 ---------------- ----------------- ---------------- ----------------- --------------- $609,028 $ 593,051 $ 673,065 $ 507,893 $ 137,353 ---------------- ----------------- ---------------- ----------------- --------------- Preferred and preference stock dividend requirements -- Provisions for preferred and preference stock dividends $ 60,486 $ 56,884 $ 23,756 $ 2,773 $ - Taxes on income required to meet provisions for preferred and preference stock dividends 39,623 37,232 15,543 1,814 - ---------------- ----------------- ---------------- ----------------- --------------- $100,109 $ 94,116 $ 39,299 $ 4,587 $ - ---------------- ----------------- ---------------- ----------------- --------------- Nine Months Year Ended Ended Sept. 30, December 31 -------------------------------------- 2001 2001 2002 ----------------- ----------------- ------------------ Net income $ 606,872 $ 506,517 $ 575,684 ----------------- ----------------- ------------------ Net provisions for income taxes and investment tax credits deferred charged to -- Operations and other income $ 506,398 $ 412,235 $ 381,547 ----------------- ----------------- ------------------ $ 506,398 $ 412,235 $ 381,547 ----------------- ----------------- ------------------ Fixed charges -- Interest on debt, including amortization of debt discount, premium and expense $ 554,802 $ 421,578 $ 374,427 Estimated interest component of nuclear fuel and other lease payments, rental and other interest 5,725 3,778 6,347 Preferred securities dividend requirements of subsidiary trusts 29,710 22,283 22,283 ----------------- ----------------- ------------------ $ 590,237 $ 447,639 $ 403,057 ----------------- ----------------- ------------------ Preferred and preference stock dividend requirements -- Provisions for preferred and preference stock dividends $ - $ - $ - Taxes on income required to meet provisions for preferred and preference stock dividends - - - ----------------- ----------------- ------------------ $ - $ - $ - ----------------- ----------------- ------------------ Year Ended December 31, Jan. 1- Oct. 20- ------------------------------------------------------ Oct. 19, Dec. 31, 1997 1998 1999 2000 2000 ---------------- ----------------- ---------------- ----------------- --------------- Fixed charges and preferred and preference stock dividend requirements $709,137 $ 687,167 $ 712,364 $ 512,480 $ 137,353 ---------------- ----------------- ---------------- ----------------- --------------- Earned for fixed charges and preferred and preference stock dividend requirements $350,347 $ 1,538,183 $ 1,651,306 $ 1,331,477 $ 369,568 ---------------- ----------------- ---------------- ----------------- --------------- Ratio of earnings to -- Fixed charges (line 49 divided by line 24) (a) 2.59 2.45 2.62 2.69 ================ ================= ================ ================= =============== Fixed charges and preferred and preference stock dividend requirements (line 49 divided by line 43) (a) 2.24 2.32 2.60 2.69 ================ ================= ================ ================= =============== Nine Months Year Ended Ended Sept. 30, December 31 -------------------------------------- 2001 2001 2002 ----------------- ----------------- ------------------ Fixed charges and preferred and preference stock dividend requirements $ 590,237 $ 447,639 $ 403,057 ----------------- ----------------- ------------------ Earned for fixed charges and preferred and preference stock dividend requirements $ 1,703,507 $1,366,391 $1,360,288 ----------------- ----------------- ------------------ Ratio of earnings to -- Fixed charges (line 49 divided by line 24) 2.89 3.05 3.37 ================= ================= ================== Fixed charges and preferred and preference stock dividend requirements (line 49 divided by line 43) 2.89 3.05 3.37 ================= ================= ================== (a) Our earnings for 1997 were inadequate to cover fixed charges by approximately $259 million and fixed charges and preferred and preference stock dividend requirements by approximately $359 million. This inadequacy was principally caused by charges related to the closure of our Zion Nuclear Generating Station and our discontinuation of regulatory accounting practices for the generation portion of our business and other charges recorded as a result of the electric utility restructuring legislation adopted in Illinois in 1997.