1 EXHIBIT 12 THE WASHINGTON WATER POWER COMPANY Computation of Ratio of Earnings to Fixed Charges and Preferred Dividend Requirements Consolidated (Thousands of Dollars) 12 Mos. Ended Years Ended December 31 March 31, -------------------------------------------------------- 1997 1996 1995 1994 1993 -------- -------- -------- -------- -------- Fixed charges, as defined: Interest on long-term debt $ 61,397 $ 60,256 $ 55,580 $ 49,566 $ 47,129 Amortization of debt expense and premium - net 2,869 2,998 3,441 3,511 3,004 Interest portion of rentals 4,304 4,311 3,962 1,282 924 -------- -------- -------- -------- -------- Total fixed charges $ 68,570 $ 67,565 $ 62,983 $ 54,359 $ 51,057 ======== ======== ======== ======== ======== Earnings, as defined: Net income from continuing ops $ 71,393 $ 83,453 $ 87,121 $ 77,197 $ 82,776 Add (deduct): Income tax expense 48,237 49,509 52,416 44,696 42,503 Total fixed charges above 68,570 67,565 62,983 54,359 51,057 -------- -------- -------- -------- -------- Total earnings $188,200 $200,527 $202,520 $176,252 $176,336 ======== ======== ======== ======== ======== Ratio of earnings to fixed charges 2.74 2.97 3.22 3.24 3.45 Fixed charges and preferred dividend requirements: Fixed charges above $ 68,570 $ 67,565 $ 62,983 $ 54,359 $ 51,057 Preferred dividend requirements (2) 12,552 12,711 14,612 13,668 12,615 -------- -------- -------- -------- -------- Total $ 81,122 $ 80,276 $ 77,595 $ 68,027 $ 63,672 ======== ======== ======== ======== ======== Ratio of earnings to fixed charges and preferred dividend requirements 2.32 2.50 2.61 2.59 2.77 (1) Calculations have been restated to reflect the results from continuing operations (ie. excluding discontinued coal mining operations). (2) Preferred dividend requirements have been grossed up to their pre-tax level.