Exhibit 12(c) Idaho Power Company Consolidated Financial Information Supplemental Ratio of Earnings to Combined Fixed Charges and Preferred Dividend Requirements Twelve Months Twelve Months Ended December 31, Ended (Thousands of Dollars) September 30, 1991 1992 1993 1994 1995 1996 Computation of Ratio of Earnings to Fixed Charges: Consolidated net income $ 57,872 $ 59,990 $ 84,464 $ 74,930 $ 86,921 $ 97,227 Income taxes: Income taxes (includes amounts charged to other income and deductions) 24,321 24,601 38,057 35,307 49,497 52,947 Investment tax credit adjustment (3,177) (1,439) (1,583) (1,064) (1,086) (269) Total income taxes 21,144 23,162 36,474 34,243 48,412 52,678 Income before income taxes 79,016 83,152 120,938 109,173 135,333 149,905 Fixed Charges: Interest on long-term debt 54,370 53,408 53,706 51,173 51,146 51,860 Amortization of debt discount, expense and premium - net 374 392 507 567 567 581 Interest on short-term bank loans 935 647 220 1,157 3,144 2,555 Other interest 3,297 1,011 2,023 1,537 1,598 2,084 Interest portion of rentals 884 683 1,077 794 925 1,131 Total fixed charges 59,860 56,141 57,533 55,228 57,381 58,211 Suppl increment to fixed charges* 1,599 2,487 2,631 2,622 2,611 2,603 Supplemental fixed charges 61,459 58,628 60,164 57,850 59,992 60,814 Preferred dividend requirements 6,663 7,611 8,547 10,682 12,392 12,004 Total supplemental fixed charges and preferred dividends 68,122 66,239 68,711 68,532 72,384 72,818 Supplemental earnings - as defined $140,475 $141,780 $181,102 $167,023 $195,325 $210,719 Supplemental ratio of earnings to fixed charges and preferred dividends 2.06X 2.14X 2.64X 2.44X 2.70X 2.89X <F2> * Explanation of increment: Interest on the guaranty of American Falls Reservoir District Bonds and Milner Dam Inc. Notes which are already included in operating expense.