EXHIBIT 12 INDIANA GAS COMPANY, INC. AND SUBSIDIARY COMPANIES COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES (In Thousands, Except Ratios) Twelve Mos. Ended Fiscal Year Ended September 30 12/31/98 1998 1997(1) 1996 1995 1994 Earnings: Net income $26,825 $30,883 $13,478 $38,630 $32,109 $34,596 Income taxes 14,148 17,510 7,147 22,568 18,630 17,977 Fixed charges (see below) 16,133 16,967 17,728 16,844 16,395 16,986 Total adjusted earnings $57,106 $65,360 $38,353 $78,042 $67,134 $69,559 Fixed charges: Total interest expense $15,802 $16,234 $16,774 $15,907 $15,530 $16,037 Interest component of rents 331 733 954 937 865 949 Total fixed charges $16,133 $16,967 $17,728 $16,844 $16,395 $16,986 Ratio of earnings to fixed charges 3.5 3.9 2.2 4.6 4.1 4.1 (1)Reflects the recording of restructuring costs in fiscal 1997 (see Note 2). Indiana Gas' ratio of earnings to fixed charges for 1997 before restructuring costs was 4.4.