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 1992 1993 1994 1995 1996 6/30/97 Fixed Charges: Interest on First Mortgage Bonds. . . $ 56,965 $ 53,771 $ 43,564 $ 43,410 $ 41,209 $ 40,330 Interest on Other Long-term Debt. . . 26,330 23,504 24,725 23,564 20,100 20,900 Interest on Short-term Debt . . . . . 1,614 1,085 1,883 2,003 2,982 2,319 Miscellaneous Interest Charges. . . . 2,866 3,039 3,520 3,472 3,262 3,238 Estimated Interest Element in Lease Rentals . . . . . . . . . . . 84,800 84,300 85,000 82,700 82,600 82,600 Total Fixed Charges. . . . . . . $172,575 $165,699 $158,692 $155,149 $150,153 $149,387 Earnings: Net Income. . . . . . . . . . . . . . $123,983 $129,344 $157,502 $141,092 $157,153 $166,046 Plus Federal Income Taxes . . . . . . 28,191 38,826 32,303 55,990 76,899 83,707 Plus State Income Taxes . . . . . . . 1,547 7,492 6,063 7,058 9,270 8,970 Plus Fixed Charges (as above) . . . . 172,575 165,699 158,692 155,149 150,153 149,387 Total Earnings . . . . . . . . . $326,296 $341,361 $354,560 $359,289 $393,475 $408,110 Ratio of Earnings to Fixed Charges. . . 1.89 2.06 2.23 2.31 2.62 2.73