EXHIBIT 12 INDIANA GAS COMPANY, INC. AND SUBSIDIARY COMPANIES COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES (In Thousands, Except Ratios) Year Ended December 31 1999 1998 1997(1) 1996 1995 Earnings: Net income $29,742 $26,825 $13,648 $36,121 $40,258 Income taxes 16,734 14,058 7,813 21,637 24,110 Fixed charges (see below) 17,691 16,133 17,782 17,154 16,465 Total adjusted earnings $64,167 $57,016 $39,243 $74,912 $80,833 Fixed charges: Total interest expense $16,969 $15,802 $17,049 $16,200 $15,528 Interest component of rents 722 331 733 954 937 Total fixed charges $17,691 $16,133 $17,782 $17,154 $16,465 Ratio of earnings to fixed charges 3.6 3.5 2.2 4.4 4.9 (1)Reflects the recording of restructuring costs in 1997 (see Item 8, Note 3). Indiana Gas' ratio of earnings to fixed charges for 1997 before restructuring costs was 4.4.