Jointly-Owned Facilities (Tables)

12 Months Ended

Dec. 31, 2014

Jointly Owned Utility Plant, Net Ownership Amount [Abstract]

APS's interests in jointly-owned facilities recorded on the Consolidated Balance Sheets

The following table shows APS’s interests in those jointly-owned facilities recorded on the Consolidated Balance Sheets at December 31, 2014 (dollars in thousands):



	Percent Owned			Plant in Service		Accumulated Depreciation		Construction Work in Progress
Generating facilities:
Palo Verde Units 1 and 3	29.1	%		$	1,734,918	$	1,051,670	$	16,955
Palo Verde Unit 2 (a)	16.8	%		556,472		349,960		13,710
Palo Verde Common	28.0	%	(b)	612,190		224,208		68,896
Palo Verde Sale Leaseback			(a)	351,050		229,795		—
Four Corners Generating Station	63.0	%		811,648		578,772		33,150
Navajo Generating Station Units 1, 2 and 3	14.0	%		272,208		159,198		2,716
Cholla common facilities (c)	63.3	%	(b)	155,856		49,954		866
Transmission facilities:
ANPP 500kV System	33.6	%	(b)	106,369		35,035		3,731
Navajo Southern System	22.5	%	(b)	59,994		18,119		1,113
Palo Verde — Yuma 500kV System	18.2	%	(b)	12,925		4,943		12
Four Corners Switchyards	47.5	%	(b)	33,034		10,035		386
Phoenix — Mead System	17.1	%	(b)	39,777		12,843		105
Palo Verde — Estrella 500kV System	50.0	%	(b)	89,572		16,491		736
Morgan — Pinnacle Peak System	64.4	%	(b)	130,840		8,970		1,690
Round Valley System	50.0	%	(b)	497		276		1
Palo Verde — Morgan System	90.0	%	(b)	—		—		69,377
Hassayampa - North Gila System	80.0	%	(b)	8,902		3,634		142,645


(a)	See Note 18.


(b)	Weighted-average of interests.


(c)	PacifiCorp owns Cholla Unit 4 and APS operates the unit for PacifiCorp. The common facilities at Cholla are jointly-owned.

- Definition

Tabular disclosure of proportionate interests in jointly owned utility plants. Includes the amount of plants in service, the accumulated provision for depreciation (if available), the amount of plants under construction, and the proportionate share. The amounts presented may be further subdivided to show amounts applicable to plant subcategories (for example, production, transmission, distribution). Includes statements that the amounts represent the utility's share in each joint plant and that it must provide its own financing. Information concerning two or more generating plants on the same site may be combined. States that the utility's share of direct expenses of the joint plants is included in the corresponding operating expenses on its income statement (for example, fuel, maintenance of plant, other operating expense). If the share of direct expenses is charged to purchased power, then disclose the amount so charged and the proportionate amounts charged to specific operating expenses on the records maintained for the joint plants.

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