Exhibit 12.01 NORTHERN STATES POWER COMPANY AND SUBSIDIARY COMPANIES STATEMENT OF COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES 1994 1993 1992 1991 1990 (Thousands of dollars) Earnings Income from continuing operations before accounting change $243,475 $211,740 $160,928 $207,012 $192,971 Add Taxes based on income (1) Federal income taxes 114,484 99,952 71,549 75,905 120,686 State income taxes 34,805 28,076 19,148 22,209 34,442 Deferred income taxes-net (2,262) 12,256 5,185 26,506 (31,794) Investment tax credit adjustment - net (13,979) (9,544) (9,708) (9,189) (10,048) Foreign income taxes 219 Fixed charges 115,083 113,562 109,888 110,146 111,826 Deduct Undistributed equity in earnings of unconsolidated investees 27,427 1,142 1,006 0 1,876 Earnings $464,398 $454,900 $355,984 $432,589 $416,207 Fixed charges Interest charges per statement of income $115,083 $113,562 $109,888 $110,146 $111,826 Ratio of earnings to fixed charges 4.0 4.0 3.2 3.9 3.7 (1) Includes income taxes included in Other Income and Deductions - Net.