Joint Ownership of Generation, Transmission and Gas Facilities (Tables)

12 Months Ended

Dec. 31, 2016

Joint Ownership of Generation, Transmission and Gas Facilities [Abstract]

Investments in Jointly Owned Generation, Transmission and Gas Facilities

Following are the investments by Xcel Energy Inc.’s utility subsidiaries in jointly owned generation, transmission and gas facilities and the related ownership percentages as of Dec. 31, 2016:

(Thousands of Dollars)	Plant in Service		Accumulated Depreciation		CWIP		Ownership %
NSP-Minnesota
Electric Generation:
Sherco Unit 3	$	589,903	$	398,367	$	9,714	59	%
Sherco Common Facilities Units 1, 2 and 3	145,447		95,909		540		80
Sherco Substation	4,790		3,146		—		59
Electric Transmission:
Grand Meadow Line and Substation	10,647		1,871		—		50
CapX2020 Transmission	965,289		116,942		56,024		51
Total NSP-Minnesota	$	1,716,076	$	616,235	$	66,278

(Thousands of Dollars)	Plant in Service		Accumulated Depreciation		CWIP		Ownership %
NSP-Wisconsin
Electric Transmission:
CapX2020 Transmission	$	164,040	$	10,874	$	42,546	81	%
La Crosse, Wis. to Madison, Wis.	—		—		41,131		37
Total NSP-Wisconsin	$	164,040	$	10,874	$	83,677

(Thousands of Dollars)	Plant in Service		Accumulated Depreciation		CWIP		Ownership %
PSCo
Electric Generation:
Hayden Unit 1	$	149,221	$	67,415	$	97	76	%
Hayden Unit 2	148,795		64,024		64		37
Hayden Common Facilities	38,230		18,951		282		53
Craig Units 1 and 2	60,318		37,570		15,730		10
Craig Common Facilities 1, 2 and 3	37,925		19,312		183		7
Comanche Unit 3	892,978		112,254		6		67
Comanche Common Facilities	24,694		1,821		636		82
Electric Transmission:
Transmission and other facilities, including substations	166,840		65,619		4,313		Various
Gas Transportation:
Rifle, Colo. to Avon, Colo.	23,406		7,679		—		60
Gas Transportation Compressor	8,397		368		—		50
Total PSCo	$	1,550,804	$	395,013	$	21,311