EXHIBIT 12.1 MIDAMERICAN FUNDING, LLC COMPUTATION OF RATIOS OF EARNINGS TO FIXED CHARGES (IN THOUSANDS) (UNAUDITED) MHC INC. (PREDECESSOR) YEAR ENDED DECEMBER 31, ------------------------------------------------ 1994 1995 1996 1997 Income from continuing operations $ 123,098 $ 119,705 $143,761 $139,332 Pre-tax (gain) loss of less than 50% owned persons (270) 9,079 (698) 2,234 --------- --------- -------- -------- 122,828 128,784 143,063 141,566 --------- --------- -------- -------- Add (Deduct): Total income taxes 60,457 66,803 98,422 68,390 Interest on long-term debt 101,267 105,550 102,909 89,898 Other interest charges 6,446 9,449 10,941 10,034 Preferred stock dividends of subsidiary 10,551 8,059 10,401 6,488 Preferred stock dividends of subsidiary trust - - 288 7,980 Interest on leases 1,211 1,088 375 268 --------- --------- -------- -------- 179,932 190,949 223,336 183,058 --------- --------- -------- -------- EARNINGS AVAILABLE FOR FIXED CHARGES 302,760 319,733 366,399 324,624 --------- --------- -------- -------- Fixed Charges: Interest on long-term debt 101,267 105,550 102,909 89,898 Other interest charges 6,446 9,449 10,941 10,034 Preferred stock dividends of subsidiary trust - - 288 7,980 Interest on leases 1,211 1,088 375 268 --------- --------- -------- -------- Subtotal 108,924 116,087 114,513 108,180 --------- --------- -------- -------- Preferred stock dividends of subsidiary 10,551 8,059 10,401 6,488 Ratio of net income before income taxes to net income 1.4524 1.5229 1.6384 1.4690 --------- --------- -------- -------- Preferred stock dividend requirements before income tax 15,324 12,273 17,041 9,531 --------- --------- -------- -------- FIXED CHARGES $ 124,248 $ 128,360 $131,554 $117,711 --------- --------- -------- -------- RATIO OF EARNINGS TO FIXED CHARGES 2.4 2.5 2.8 2.8 ========= ========= ======== ======== MIDAMERICAN FUNDING ---------------------------------------- ------------ NINE MONTHS ENDED JAN. 1 - MAR. 12 - SEPT. 30, MAR. 11, SEPT. 30, 1998 1998 1999 1999 ---- ---- ---- ---- $ 127,154 $ 107,105 $ 16,789 $ 108,628 (720) (1,052) (343) (22) --------- --------- -------- --------- 126,434 106,053 16,446 108,606 --------- --------- -------- --------- 76,926 70,172 21,377 77,348 80,908 61,617 14,814 65,174 12,682 9,073 3,145 5,486 4,952 3,714 836 2,337 7,980 5,985 1,995 3,990 212 162 38 98 --------- --------- -------- --------- 183,660 150,723 42,205 154,433 --------- --------- -------- --------- 310,094 256,776 58,651 263,039 --------- --------- -------- --------- 80,908 61,617 14,814 65,174 12,682 9,073 3,145 5,486 7,980 5,985 1,995 3,990 212 162 38 98 --------- --------- -------- --------- 101,782 76,837 19,992 74,748 --------- --------- -------- --------- 4,952 3,714 836 2,337 1.5823 1.6332 2.2129 1.6970 --------- --------- -------- --------- 7,836 6,066 1,850 3,966 --------- --------- -------- --------- $ 109,618 $ 82,903 $ 21,842 $ 78,714 --------- --------- -------- --------- 2.8 3.1 2.7 3.3 ========= ======== ======== ======== EXHIBIT 12.1 MIDAMERICAN FUNDING, LLC COMPUTATION OF PRO FORMA RATIOS OF EARNINGS TO FIXED CHARGES (IN THOUSANDS) (UNAUDITED) PRO FORMA ---------------------------------------- MIDAMERICAN MHC FUNDING (PREDECESSOR) ------------- ----------------- YEAR ENDED NINE MONTHS ENDED DEC. 31, 1998 SEPT. 30, 1999 ------------- ----------------- Income from continuing operations $ 76,099 $130,628 Pre-tax (gain) loss of less than 50% owned persons (720) (365) --------- -------- 75,379 130,263 --------- -------- Add (Deduct): Total income taxes 64,685 98,598 Interest on long-term debt 122,395 88,034 Other interest charges 12,682 8,631 Preferred stock dividends of subsidiary 4,952 3,716 Preferred stock dividends of subsidiary trust 7,980 5,985 Interest on leases 212 136 --------- -------- 212,906 205,100 --------- -------- EARNINGS AVAILABLE FOR FIXED CHARGES 288,285 335,363 --------- -------- Fixed Charges: Interest on long-term debt 122,395 88,034 Other interest charges 12,682 8,631 Preferred stock dividends of subsidiary trust 7,980 5,985 Interest on leases 212 136 --------- -------- Subtotal 143,269 102,786 --------- -------- Preferred stock dividends of subsidiary 4,952 3,716 Ratio of net income before income taxes to net income 1.7981 1.7339 --------- -------- Preferred stock dividend requirements before income tax 8,904 6,443 --------- -------- FIXED CHARGES $ 152,173 $109,229 --------- -------- RATIO OF EARNINGS TO FIXED CHARGES 1.9 3.1 ========= ========