EXHIBIT 12 INDIANA GAS COMPANY, INC. AND SUBSIDIARY COMPANIES COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES (In Thousands, Except Ratios) Fiscal Year Ended September 30 1996 1995 1994 1993 1992 Earnings: Net income $38,630 $32,109 $34,596 $28,534 $25,743 Income taxes 22,568 18,630 17,977 16,030 12,800 Fixed charges (see below) 16,844 16,395 16,986 17,556 15,642 Total adjusted earnings $78,042 $67,134 $69,559 $62,120 $54,185 Fixed charges: Total interest expense $15,907 $15,530 $16,037 $16,640 $14,556 Interest component of rents 937 865 949 916 1,086 Total fixed charges $16,844 $16,395 $16,986 $17,556 $15,642 Ratio of earnings to fixed charges 4.6 4.1 4.1 3.5 3.5