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 1995 1996 1997 1998 1999 6/30/00 Fixed Charges: Interest on First Mortgage Bonds. . . . . . . . $ 61,836 $ 52,147 $ 45,540 $ 33,663 $ 25,506 $ 23,153 Interest on Other Long-term Debt. . . . . . . . 23,193 27,045 29,620 38,520 49,125 54,749 Interest on Short-term Debt . . . . . . . . . . 2,658 4,006 4,519 5,821 8,327 9,354 Miscellaneous Interest Charges. . . . . . . . . 7,126 3,705 4,464 4,617 5,016 4,904 Estimated Interest Element in Lease Rentals . . 50,700 53,200 52,900 59,300 53,400 53,400 Total Fixed Charges. . . . . . . . . . . . $145,513 $140,103 $137,043 $141,921 $141,374 $145,560 Earnings: Net Income. . . . . . . . . . . . . . . . . . . $189,447 $217,655 $208,689 $209,925 $212,157 $203,920 Plus Federal Income Taxes . . . . . . . . . . . 93,699 117,243 121,559 112,087 130,814 132,002 Plus State Income Taxes . . . . . . . . . . . . 1,618 2,252 2,655 2,742 1,677 (1,178) Plus Fixed Charges (as above) . . . . . . . . . 145,513 140,103 137,043 141,921 141,374 145,560 Total Earnings . . . . . . . . . . . . . . $430,277 $477,253 $469,946 $466,675 $486,022 $480,304 Ratio of Earnings to Fixed Charges. . . . . . . . 2.95 3.40 3.42 3.28 3.43 3.29