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 3/31/00 Fixed Charges: Interest on First Mortgage Bonds. . . . . . . . $ 61,836 $ 52,147 $ 45,540 $ 33,663 $ 25,506 $ 23,837 Interest on Other Long-term Debt. . . . . . . . 23,193 27,045 29,620 38,520 49,125 51,844 Interest on Short-term Debt . . . . . . . . . . 2,658 4,006 4,519 5,821 8,327 9,390 Miscellaneous Interest Charges. . . . . . . . . 7,126 3,705 4,464 4,617 5,016 4,568 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 $143,039 Earnings: Net Income. . . . . . . . . . . . . . . . . . . $189,447 $217,655 $208,689 $209,925 $212,157 $197,552 Plus Federal Income Taxes . . . . . . . . . . . 93,699 117,243 121,559 112,087 130,814 129,690 Plus State Income Taxes . . . . . . . . . . . . 1,618 2,252 2,655 2,742 1,677 1,611 Plus Fixed Charges (as above) . . . . . . . . . 145,513 140,103 137,043 141,921 141,374 143,039 Total Earnings . . . . . . . . . . . . . . $430,277 $477,253 $469,946 $466,675 $486,022 $471,892 Ratio of Earnings to Fixed Charges. . . . . . . . 2.95 3.40 3.42 3.28 3.43 3.29