Ex-12a Idaho Power Company Consolidated Financial Information Supplemental Ratio of Earnings to Fixed Charges Twelve Months Twelve Months Ended December 31, Ended (Thousands of Dollars) March 31, 1993 1994 1995 1996 1997 1998 Computation of Ratio of Earnings to Fixed Charges: Consolidated net income..................... $84,464 $74,930 $86,921 $90,618 $92,274 $91,352 Income taxes: Income taxes (incl amounts charged to other income and deductions)............ 38,057 35,307 49,498 51,316 47,559 43,800 Investment tax credit adjustment............ (1,583) (1,064) (1,086) 776 (1,087) (565) Total income taxes.................... 36,474 34,243 48,412 52,092 46,472 43,235 Income before income taxes...................... 120,938 109,173 135,333 142,710 138,746 134,587 Fixed Charges: Interest on long-term debt................. 53,706 51,172 51,147 52,165 53,215 52,447 expense and premium - net.................. 507 567 567 594 653 656 Interest on short-term bank loans........... 220 1,157 3,144 2,269 2,902 3,011 Other interest.............................. 2,023 1,538 1,598 2,319 3,990 3,916 Interest portion of rentals................. 1,077 794 925 991 982 1,066 Total fixed charges................... 57,533 55,228 57,381 58,338 61,742 61,096 Supplemental increment to fixed charges* .. 2,631 2,622 2,611 2,600 2,574 2,565 Total supplemental fixed charges...... 60,164 57,850 59,992 60,938 64,316 63,661 Supplemental Earnings - as defined............. $181,102 $167,023 $195,325 $203,648 $203,062 $198,248 Supplemental Ratio of earnings to fixed charges 3.01x 2.89x 3.26x 3.34x 3.16x 3.11x <F1> * 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. Exhibit 12-A