IES UTILITIES INC. COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES Twelve Months Year Ended December 31, Ended June 30, 1989 1990 1991 1992 1993 1994 (in thousands, except ratio of earnings to fixed charges) Net income $ 53,454 $ 45,969 $ 47,563 $ 45,291 $ 67,970 $ 67,254 Federal and state income taxes 22,574 22,364 23,494 20,760 37,963 39,434 Net income before income taxes 76,028 68,333 71,057 66,051 105,933 106,688 es Interest on long-term debt 29,044 28,853 31,171 35,689 34,926 36,365 Other interest 3,130 4,704 5,595 3,939 5,243 4,425 Estimated interest component of rents 9,494 7,936 6,594 4,567 3,729 3,915 Fixed charges as defined 41,668 41,493 43,360 44,195 43,898 44,705 Earnings as defined $ 117,696 $ 109,826 $ 114,417 $ 110,246 $ 149,831 $ 151,393 Ratio of earnings to fixed charges (unudited) 2.82 2.65 2.64 2.49 3.41 3.39 For purposes of computation of these ratios (a) earnings have been calculated by adding fixed charges and Federal and state income taxes to net income; and (b) fixed charges consist of interest (including amortization of debt expense, premium and discount) on long-term and other debt and the estimated interest component of rents.