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Exhibit 12.01

EXHIBIT 12(a)

NORTHERN STATES POWER COMPANY—MINNESOTA
AND SUBSIDIARIES

COMPUTATION OF RATIO OF CONSOLIDATED EARNINGS
TO CONSOLIDATED FIXED CHARGES

(not covered by Report of Independent Public Accountants)

			Year Ended December 31,
			2000		1999		1998		1997		1996
			(in thousands, except ratios)
Earnings:
	Net Income		$	111,224	$	158,980	$	210,206	$	199,465	$	218,627
	Provisions for Federal and state taxes on income			92,191		97,431		124,713		121,764		138,244
	Fixed charges as below			146,192		125,431		113,160		117,928		105,905
	Less: Undistributed equity in earnings of unconsolidated affiliates			—		—		—		—		—
		Total	$	349,607	$	381,842	$	448,079	$	439,157	$	462,776
Fixed Charges:
	Interest charges, excluding AFC—debt		$	130,442	$	109,681	$	97,410	$	103,490	$	105,905
	Distributions on redeemable preferred securities of subsidiary trust			15,750		15,750		15,750		14,438		—
		Total	$	146,192	$	125,431	$	113,160	$	117,928	$	105,905
Ratio of earnings to fixed charges				2.4		3.0		4.0		3.7		4.4

EXHIBIT 12(b)

NORTHERN STATES POWER COMPANY—WISCONSIN
AND SUBSIDIARIES

COMPUTATION OF RATIO OF CONSOLIDATED EARNINGS
TO CONSOLIDATED FIXED CHARGES

(not covered by Report of Independent Public Accountants)

			Year Ended December 31,
			2000		1999		1998		1997		1996
			(in thousands, except ratios)
Earnings:
	Net Income		$	30,296	$	36,366	$	32,195	$	37,417	$	38,697
	Provisions for Federal and state taxes on income			20,690		25,302		20,468		23,309		24,582
	Fixed charges as below			21,557		19,627		19,189		18,010		19,324
	Less: Undistributed equity in earnings of unconsolidated affiliates			411		409		3		300		207
		Total	$	72,132	$	80,886	$	71,849	$	78,436	$	82,396
Fixed Charges:
	Interest charges, excluding AFC—debt		$	21,557	$	19,627	$	19,189	$	18,010	$	19,324
	Distributions on redeemable preferred securities of subsidiary trust			—		—		—		—		—
		Total	$	21,557	$	19,627	$	19,189	$	18,010	$	19,324
Ratio of earnings to fixed charges				3.3		4.1		3.7		4.4		4.3

EXHIBIT 12(c)

PUBLIC SERVICE COMPANY OF COLORADO
AND SUBSIDIARIES

COMPUTATION OF RATIO OF CONSOLIDATED EARNINGS
TO CONSOLIDATED FIXED CHARGES

(not covered by Report of Independent Public Accountants)

			Year Ended December 31,
			2000		1999		1998		1997		1996
			(in thousands, except ratios)
Earnings:
	Net Income		$	196,128	$	204,265	$	200,103	$	204,042	$	190,346
	Provisions for Federal and state taxes on income			102,770		96,574		101,494		90,813		96,331
	Fixed charges as below			244,952		234,544		210,539		197,658		163,873
	Less: Undistributed equity in earnings of unconsolidated affiliates			—		—		—		—		—
		Total	$	543,850	$	535,383	$	512,136	$	492,513	$	450,550
Fixed Charges:
	Interest charges, excluding AFC—debt		$	229,752	$	219,344	$	200,828	$	197,658	$	163,873
	Distributions on redeemable preferred securities of subsidiary trust			15,200		15,200		9,711		—		—
		Total	$	244,952	$	234,544	$	210,539	$	197,658	$	163,873
Ratio of earnings to fixed charges				2.2		2.3		2.4		2.5		2.7

EXHIBIT 12(d)

SOUTHWESTERN PUBLIC SERVICE COMPANY

COMPUTATION OF RATIO OF EARNINGS
TO FIXED CHARGES

(not covered by Report of Independent Public Accountants)

			Year Ended December 31,										Year Ended August 31, 1996
											Transition Period
			2000		1999		1998		1997
			(in thousands, except ratios)
Earnings:
	Net Income		$	69,492	$	102,709	$	114,987	$	75,575	$	19,137	$	105,773
	Provisions for Federal and state taxes on income			58,776		59,399		65,696		48,795		10,987		65,297
	Fixed charges as below			67,713		64,888		64,052		63,075		19,344		53,347
	Less: Undistributed equity in earnings of unconsolidated affiliates			—		—		—		—		—
		Total	$	195,981	$	226,996	$	244,735	$	187,445	$	49,468	$	224,417
Fixed Charges:
	Interest charges, excluding AFC — debt		$	59,863	$	57,038	$	56,202	$	55,225	$	17,818	$	53,347
	Distributions on redeemable preferred securities of subsidiary trust			7,850		7,850		7,850		7,850		1,526		—
		Total	$	67,713	$	64,888	$	64,052	$	63,075	$	19,344	$	53,347
Ratio of earnings to fixed charges				2.9		3.5		3.8		3.0		2.6		4.2

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Exhibit 12.01