EXHIBIT 12 INDIANA MICHIGAN POWER COMPANY Computation of Consolidated Ratio of Earnings to Fixed Charges (in thousands except ratio data) Twelve Months Year Ended December 31, Ended 1994 1995 1996 1997 1998 3/31/99 Fixed Charges: Interest on First Mortgage Bonds. . . $ 43,564 $ 43,410 $ 41,209 $ 39,678 $ 35,910 $ 34,926 Interest on Other Long-term Debt. . . 24,725 23,564 20,100 21,064 27,457 30,509 Interest on Short-term Debt . . . . . 1,883 2,003 2,982 3,248 4,903 4,559 Miscellaneous Interest Charges. . . . 3,520 3,472 3,262 3,187 3,113 5,999 Estimated Interest Element in Lease Rentals . . . . . . . . . . . 85,000 82,700 82,600 79,700 79,300 79,300 Total Fixed Charges. . . . . . . $158,692 $155,149 $150,153 $146,877 $150,683 $155,293 Earnings: Net Income. . . . . . . . . . . . . . $157,502 $141,092 $157,153 $146,740 $ 96,628 $ 82,954 Plus Federal Income Taxes . . . . . . 32,303 55,990 76,899 74,223 47,210 42,167 Plus State Income Taxes . . . . . . . 6,063 7,058 9,270 7,519 4,938 7,371 Plus Fixed Charges (as above) . . . . 158,692 155,149 150,153 146,877 150,683 155,293 Total Earnings . . . . . . . . . $354,560 $359,289 $393,475 $375,359 $299,459 $287,785 Ratio of Earnings to Fixed Charges. . . 2.23 2.31 2.62 2.55 1.98 1.85