EXHIBIT 12 OHIO POWER COMPANY Computation of Consolidated Ratio of Earnings to Fixed Charges (in thousands except ratio data) Twelve Months Year Ended December 31, Ended 1991 1992 1993 1994 1995 6/30/96 Fixed Charges: Interest on First Mortgage Bonds. . . . . . . . $ 71,765 $ 83,572 $ 74,121 $ 63,805 $ 61,836 $ 57,582 Interest on Other Long-term Debt. . . . . . . . 28,575 26,611 24,510 21,453 23,193 25,870 Interest on Short-term Debt . . . . . . . . . . 5,973 2,711 1,122 992 2,658 3,217 Miscellaneous Interest Charges. . . . . . . . . 3,237 2,800 2,958 5,140 7,126 8,250 Estimated Interest Element in Lease Rentals . . 22,800 22,800 15,300 13,900 50,700 50,700 Total Fixed Charges. . . . . . . . . . . . $132,350 $138,494 $118,011 $105,290 $145,513 $145,619 Earnings: Net Income. . . . . . . . . . . . . . . . . . . $166,102 $160,553 $185,770 $162,626 $189,447 $206,392 Plus Federal Income Taxes . . . . . . . . . . . 78,480 75,783 64,244 74,822 93,699 102,714 Plus State Income Taxes . . . . . . . . . . . . 1,898 1,082 2,626 3,375 1,618 1,717 Plus Fixed Charges (as above) . . . . . . . . . 132,350 138,494 118,011 105,290 145,513 145,619 Total Earnings . . . . . . . . . . . . . . $378,830 $375,912 $370,651 $346,113 $430,277 $456,442 Ratio of Earnings to Fixed Charges. . . . . . . . 2.86 2.71 3.14 3.28 2.95 3.13