Exhibit 12.01 NORTHERN STATES POWER COMPANY AND SUBSIDIARY COMPANIES STATEMENT OF COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES 1996 1995 1994 1993 1992 (Thousands of dollars) Earnings Income from continuing operations before accounting change $274,539 $275,795 $243,475 $211,740 $160,928 Add Taxes based on income (1) Federal income taxes 153,515 142,492 112,611 99,952 71,549 State income taxes 40,635 34,988 35,746 28,076 19,148 Deferred income taxes-net (30,561) (11,076) (6,100) 12,256 5,185 Tax credits - net (17,395) (14,409) (13,049) (9,544) (9,708) Foreign income taxes 616 233 219 Fixed charges 141,961 133,328 115,083 113,562 109,888 Deduct Undistributed equity in earnings of unconsolidated investees 25,976 41,870 23,588 1,142 1,006 Earnings $537,334 $519,481 $464,397 $454,900 $355,984 Fixed charges Interest charges per statement of income $141,961 $133,328 $115,083 $113,562 $109,888 Ratio of earnings to fixed charges 3.8 3.9 4.0 4.0 3.2 (1) Includes income taxes included in Other Income (Expense).