EXHIBIT 12 CASCADE NATURAL GAS CORPORATION AND SUBSIDIARIES COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES AND PREFERRED DIVIDEND REQUIREMENTS Twelve Months Ended September 30 Year Ended December 31 ------------------- ---------------------------------------- 1995 1994 1994 1993 1992 1991 1990 ------ ------ ------ ------ ------ ------ ------ (dollars in thousands) Fixed charges, as defined: Interest expense $9,423 7,540 8,090 7,038 7,478 7,793 8,374 Amortization of debt issuance expense 604 586 593 562 402 362 373 -------- ------- ------- ------- ------- ------- -------- Total fixed charges 10,027 8,126 8,683 7,600 7,880 8,155 8,747 -------- ------- ------- ------- ------- ------- -------- Earnings, as defined: Net earnings 7,087 6,351 5,760 9,103 4,843 7,651 8,376 Add (deduct): Income taxes 4,590 3,452 3,505 5,224 2,817 4,206 4,547 Cumulative effect of change in accounting method - - - (209) - - - Fixed charges 10,027 8,126 8,683 7,600 7,880 8,155 8,747 -------- ------- ------- ------- ------- ------- -------- Total earnings $21,704 17,929 17,948 21,718 15,540 20,012 21,670 -------- ------- ------- ------- ------- ------- -------- Ratio of earnings to fixed charges 2.16 2.21 2.07 2.86 1.97 2.45 2.48 -------- ------- ------- ------- ------- ------- -------- Fixed charges and preferred dividend requirements: Fixed charges $10,027 8,126 8,683 7,600 7,880 8,155 8,747 Preferred dividend requirements 896 867 898 913 941 229 238 -------- ------- ------- ------- ------- ------- -------- Total $10,923 8,993 9,581 8,513 8,821 8,384 8,985 -------- ------- ------- ------- ------- ------- -------- Ratio of earnings to fixed charges and preferred dividend requirements 1.99 1.99 1.87 2.55 1.76 2.39 2.41 -------- ------- ------- ------- ------- ------- --------