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Jointly-Owned Facilities (Details) - ARIZONA PUBLIC SERVICE COMPANY $ in Thousands | Dec. 31, 2018 USD ($)
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Navajo Plant |
Interests in jointly-owned facilities |
Ownership interest by noncontrolling owners (as a percent) | 14.00%
Palo Verde Units 1 and 3 |
Interests in jointly-owned facilities |
Percent Owned | 29.10%
Plant in Service | $ 1,887,729
Accumulated Depreciation | 1,095,878
Construction work in progress | $ 25,185
Palo Verde Unit 2 |
Interests in jointly-owned facilities |
Percent Owned | 16.80%
Plant in Service | $ 638,419
Accumulated Depreciation | 369,372
Construction work in progress | $ 20,852
Palo Verde Common |
Interests in jointly-owned facilities |
Percent Owned | 28.00%
Plant in Service | $ 752,300
Accumulated Depreciation | 277,414
Construction work in progress | 39,995
Palo Verde Sale Leaseback |
Interests in jointly-owned facilities |
Plant in Service | 351,050
Accumulated Depreciation | 245,275
Construction work in progress | $ 0
Four Corners Generating Station |
Interests in jointly-owned facilities |
Percent Owned | 63.00%
Plant in Service | $ 1,466,579
Accumulated Depreciation | 544,308
Construction work in progress | $ 23,430
Cholla Common Facilities |
Interests in jointly-owned facilities |
Percent Owned | 50.50%
Plant in Service | $ 183,390
Accumulated Depreciation | 82,434
Construction work in progress | $ 893
ANPP 500kV System |
Interests in jointly-owned facilities |
Percent Owned | 33.50%
Plant in Service | $ 129,587
Accumulated Depreciation | 49,340
Construction work in progress | $ 2,705
Navajo Southern System |
Interests in jointly-owned facilities |
Percent Owned | 26.70%
Plant in Service | $ 82,046
Accumulated Depreciation | 30,464
Construction work in progress | $ 284
Palo Verde — Yuma 500kV System |
Interests in jointly-owned facilities |
Percent Owned | 19.00%
Plant in Service | $ 15,304
Accumulated Depreciation | 6,729
Construction work in progress | $ 530
Four Corners Switchyards |
Interests in jointly-owned facilities |
Percent Owned | 63.10%
Plant in Service | $ 68,707
Accumulated Depreciation | 15,436
Construction work in progress | $ 1,334
Phoenix — Mead System |
Interests in jointly-owned facilities |
Percent Owned | 17.10%
Plant in Service | $ 39,329
Accumulated Depreciation | 18,527
Construction work in progress | $ 44
Palo Verde — Rudd 500kV System |
Interests in jointly-owned facilities |
Percent Owned | 50.00%
Plant in Service | $ 93,887
Accumulated Depreciation | 25,573
Construction work in progress | $ 302
Morgan — Pinnacle Peak System |
Interests in jointly-owned facilities |
Percent Owned | 64.60%
Plant in Service | $ 117,722
Accumulated Depreciation | 16,744
Construction work in progress | $ 0
Round Valley System |
Interests in jointly-owned facilities |
Percent Owned | 50.00%
Plant in Service | $ 515
Accumulated Depreciation | 153
Construction work in progress | $ 0
Palo Verde — Morgan System |
Interests in jointly-owned facilities |
Percent Owned | 87.90%
Plant in Service | $ 219,292
Accumulated Depreciation | 6,660
Construction work in progress | $ 0
Hassayampa — North Gila System |
Interests in jointly-owned facilities |
Percent Owned | 80.00%
Plant in Service | $ 142,541
Accumulated Depreciation | 9,805
Construction work in progress | $ 0
Cholla 500kV Switchyard |
Interests in jointly-owned facilities |
Percent Owned | 85.70%
Plant in Service | $ 5,078
Accumulated Depreciation | 1,414
Construction work in progress | $ 38
Saguaro 500kV Switchyard |
Interests in jointly-owned facilities |
Percent Owned | 60.00%
Plant in Service | $ 20,414
Accumulated Depreciation | 12,790
Construction work in progress | $ 0
Kyrene — Knox System |
Interests in jointly-owned facilities |
Percent Owned | 50.00%
Plant in Service | $ 578
Accumulated Depreciation | 307
Construction work in progress | $ 0

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- Definition The period end amount owned by the reporting utility of a jointly owned utility plant in service. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 360 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 10.C) -URI http://asc.fasb.org/extlink&oid=115995737&loc=d3e659983-123033 + Details
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- Definition The period end amount of construction work in progress at a jointly owned electricity generation plant. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 360 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 10.C) -URI http://asc.fasb.org/extlink&oid=115995737&loc=d3e659983-123033 + Details
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