EXHIBIT 12.1 MIDAMERICAN ENERGY HOLDINGS COMPANY COMPUTATION OF RATIOS OF EARNINGS TO FIXED CHARGES (IN THOUSANDS) MIDAMERICAN ENERGY HOLDINGS COMPANY ------------------------------------------------------------------------------ TWELVE MONTHS MARCH 14, 2000 JANUARY 1, 2000 TWELVE MONTHS ENDED THROUGH THROUGH ENDED DECEMBER 31, 2001 DECEMBER 31, 2000 MARCH 13, 2000 DECEMBER 31, 1999 Income before minority interest $ 253,820 $ 165,927 $ 60,162 $ 263,594 Add (Deduct): Provision for income taxes 250,064 53,277 31,008 93,475 Interest expense 499,263 396,773 101,330 496,578 Less interest capitalized (86,469) (85,369) (15,516) (70,405) Amortization of deferred financing and bank fees 20,529 18,310 4,075 18,181 ----------------- ------------------ ---------------- ----------------- 683,387 382,991 120,897 537,829 ----------------- ------------------ ---------------- ----------------- EARNINGS AVAILABLE FOR FIXED CHARGES 937,207 548,918 181,059 801,423 ----------------- ------------------ ---------------- ----------------- Fixed Charges: Interest expense 499,263 396,773 101,330 496,578 Amortization of deferred financing and bank fees 20,529 18,310 4,075 18,181 ----------------- ------------------ ---------------- ----------------- TOTAL FIXED CHARGES 519,792 415,083 105,405 514,759 ----------------- ------------------ ---------------- ----------------- RATIO OF EARNINGS TO FIXED CHARGES 1.8 1.3 1.7 1.6 ================= ================== ================ ================= MIDAMERICAN ENERGY HOLDINGS COMPANY ------------------------------------------------------------------------------- TWELVE MONTHS TWELVE MONTHS NINE MONTHS NINE MONTHS ENDED ENDED ENDED ENDED DECEMBER 31, 1998 DECEMBER 31, 1997 SEPTEMBER 30, 2002 SEPTEMBER 30, 2001 Income before minority interest $ 178,788 $ 97,816 $ 411,966 $ 206,641 Add (Deduct): Provision for income taxes 93,265 99,044 80,226 296,088 Interest expense 406,084 296,364 462,998 362,163 Less interest capitalized (58,792) (45,059) (24,128) (72,010) Amortization of deferred financing and bank fees 21,723 33,792 32,589 15,542 ----------------- ------------------ ---------------- ----------------- 462,280 384,141 551,685 601,783 ----------------- ------------------ ---------------- ----------------- EARNINGS AVAILABLE FOR FIXED CHARGES 641,068 481,957 963,651 808,424 ----------------- ------------------ ---------------- ----------------- Fixed Charges: Interest expense 406,084 296,364 462,998 362,163 Amortization of deferred financing and bank fees 21,723 33,792 32,589 15,542 ----------------- ------------------ ---------------- ----------------- TOTAL FIXED CHARGES 427,807 330,156 495,587 377,705 ----------------- ------------------ ---------------- ----------------- RATIO OF EARNINGS TO FIXED CHARGES 1.5 1.5 1.9 2.1 ================= ================== ================ =================