Exhibit 12(a) THE MONTANA POWER COMPANY Computation of Ratio of Earnings to Fixed Charges (Dollars in Thousands) TWELVE MONTHS ENDED JUNE 30, 1996 ------------- Net Income . . . . $ 69,192 33,807 Income Taxes . . . -------- $102,999 -------- Fixed Charges: Interest . . . . $ 48,255 Amortization of Debt Discount, Expense and Premium . . . . 1,567 34,925 Rentals . . . . . -------- $ 84,747 -------- Earnings Before Income Taxes and $187,746 Fixed Charges . . ======== Ratio of Earnings to 2.22X Fixed Charges . . ======== YEAR ENDED DECEMBER 31, --------------------------------------------------- 1995 1994 1993 1992 1991 ---- ---- ---- ---- ---- Net Income . . . $ 59,053 $115,963 $107,196 $107,065 $105,715 21,573 53,152 54,120 45,639 50,394 Income Taxes . . -------- -------- -------- -------- -------- $ 80,626 $169,115 $161,316 $152,704 $156,109 -------- -------- -------- -------- -------- Fixed Charges: Interest . . . $ 47,330 $ 44,096 $ 48,142 $ 48,810 $ 52,836 Amortization of Debt Discount, Expense and Premium . . . 1,567 1,666 1,768 1,878 1,245 35,300 36,586 36,631 36,905 37,638 Rentals . . . . -------- -------- -------- -------- -------- $ 84,197 $ 82,348 $ 86,541 $ 87,593 $ 91,719 -------- -------- -------- -------- -------- Earnings Before Income Taxes and $164,823 $251,463 $247,857 $240,297 $247,828 Fixed Charges . ======== ======== ======== ======== ======== Ratio of Earnings 1.96X 3.05X 2.86X 2.74X 2.70X to Fixed Charges ======== ======== ======== ======== ========