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Jointly-Owned Facilities (Tables)
12 Months Ended
Dec. 31, 2011
Jointly-Owned Facilities  
APS's interests in jointly-owned facilities recorded on the Consolidated Balance Sheets

 

 

 

 

Percent
Owned

 

Plant in
Service

 

Accumulated
Depreciation

 

Construction
Work in
Progress

 

Generating facilities:

 

 

 

 

 

 

 

 

 

Palo Verde Units 1 and 3

 

29.1

%

$

2,061,894

 

$

1,154,141

 

$

66,558

 

Palo Verde Unit 2 (a)

 

17.0

%

661,006

 

365,704

 

33,032

 

Palo Verde Sale Leaseback

 

 

(a)

351,050

 

218,186

 

 

Four Corners Units 4 and 5

 

15.0

%

165,139

 

104,910

 

2,357

 

Four Corners common

 

38.44

%

16,413

 

5,997

 

750

 

Navajo Generating Station Units 1, 2 and 3

 

14.0

%

264,227

 

170,777

 

10,327

 

Cholla common facilities (b)

 

63.3

%(c)

146,642

 

51,985

 

1,661

 

Transmission facilities:

 

 

 

 

 

 

 

 

 

ANPP 500kV System

 

33.0

%(c)

88,451

 

30,123

 

10,161

 

Navajo Southern System

 

25.9

%(c)

51,174

 

15,161

 

920

 

Palo Verde — Yuma 500kV System

 

44.1

%(c)

8,816

 

4,331

 

 

Four Corners Switchyards

 

39.6

%(c)

19,630

 

5,696

 

1,004

 

Phoenix — Mead System

 

17.5

%(c)

39,374

 

10,731

 

 

Palo Verde — Estrella 500kV System

 

50.0

%(c)

85,643

 

11,769

 

3,445

 

North Valley System

 

69.3

%(c)

95,057

 

1,757

 

3,821

 

Round Valley System

 

50.0

%(c)

570

 

320

 

 

 

(a)                                  See Note 20.

 

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

 

(c)                                  Weighted average of interests.