Jointly-Owned Facilities (Tables)

12 Months Ended

Dec. 31, 2022

Jointly Owned Utility Plant, Net Ownership Amount [Abstract]

Schedule Of 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, 2022 (dollars in thousands):

	Percent Owned			Plant in Service		Accumulated Depreciation		Construction Work in Progress
Generating facilities:
Palo Verde Units 1 and 3	29.1	%		$	1,947,593	$	1,099,132	$	39,933
Palo Verde Unit 2 (a)	16.8	%		659,514		383,775		14,784
Palo Verde Common	28.0	%	(b)	799,794		346,705		52,631
Palo Verde Sale Leaseback			(a)	351,050		260,754		—
Four Corners Generating Station	63.0	%		1,665,042		620,918		46,643
Cholla Common Facilities (c)	50.5	%		207,104		140,886		2,988
Transmission facilities:
ANPP 500kV System	33.4	%	(b)	133,887		55,704		2,820
Navajo Southern System	26.8	%	(b)	90,345		36,929		1,945
Palo Verde — Yuma 500kV System	25.4	%	(b)	24,026		7,559		128
Four Corners Switchyards	61.9	%	(b)	73,243		20,350		120
Phoenix — Mead System	17.1	%	(b)	39,705		20,055		51
Palo Verde — Rudd 500kV System	50.0	%		95,736		31,118		391
Morgan — Pinnacle Peak System	64.7	%	(b)	119,785		25,791		96
Round Valley System	50.0	%		548		193		—
Palo Verde — Morgan System	87.8	%	(b)	263,576		34,415		1,414
Hassayampa — North Gila System	80.0	%		148,174		22,566		3,771
Cholla 500kV Switchyard	85.7	%		8,100		2,380		—
Saguaro 500kV Switchyard	60.0	%		21,656		13,809		—
Kyrene — Knox System	50.0	%		578		336		—
Agua Fria Switchyard	10.0	%		—		—		32

(a)See Note 17.

(b)Weighted-average of interests.

(c)PacifiCorp owns Cholla Unit 4 (see Note 3 for additional information), and APS operated the unit for PacifiCorp.  Cholla Unit 4 was retired on December 24, 2020. The common facilities at Cholla are jointly-owned.