CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
CURRENT ASSETS
Cash and cash equivalents	$ 39,488	$ 7,604
Customer and other receivables	274,691	297,740
Accrued unbilled revenues	96,240	100,533
Allowance for doubtful accounts	(3,125)	(3,094)
Materials and supplies (at average cost)	234,234	218,889
Fossil fuel (at average cost)	45,697	37,097
Deferred income taxes (Note 4)	0	122,232
Income tax receivable (Note 4)	589	3,098
Assets from risk management activities (Note 16)	15,905	13,785
Deferred fuel and purchased power regulatory asset (Note 3)	0	6,926
Other regulatory assets (Note 3)	149,555	129,808
Other current assets	37,242	38,817
Total current assets	890,516	973,435
INVESTMENTS AND OTHER ASSETS
Assets from risk management activities (Note 16)	12,106	17,620
Nuclear decommissioning trust (Notes 13 and 19)	735,196	713,866
Other assets	52,518	54,047
Total investments and other assets	799,820	785,533
PROPERTY, PLANT AND EQUIPMENT (Notes 1, 6 and 9)
Plant in service and held for future use	16,222,232	15,543,063
Accumulated depreciation and amortization	(5,594,094)	(5,397,751)
Net	10,628,138	10,145,312
Construction work in progress	816,307	682,807
Palo Verde sale leaseback, net of accumulated depreciation of $233,665 and $229,795 (Note 18)	117,385	121,255
Intangible assets, net of accumulated amortization of $546,038 and $489,538	123,975	119,755
Nuclear fuel, net of accumulated amortization of $146,228 and $143,554	123,139	125,201
Total property, plant and equipment	11,808,944	11,194,330
DEFERRED DEBITS
Regulatory assets (Notes 1, 3 and 4)	1,214,146	1,054,087
Assets for other postretirement benefits (Note 7)	185,997	152,290
Other	128,835	129,215
Total deferred debits	1,528,978	1,335,592
Total Assets	15,028,258	14,288,890
CURRENT LIABILITIES
Accounts payable	297,480	295,211
Accrued taxes (Note 4)	138,600	140,613
Accrued interest	56,305	52,603
Common dividends payable	69,363	65,790
Short-term borrowings (Note 5)	0	147,400
Current maturities of long-term debt (Note 6)	357,580	383,570
Customer deposits	73,073	72,307
Liabilities from risk management activities (Note 16)	77,716	59,676
Liabilities for asset retirements (Note 11)	28,573	32,462
Deferred fuel and purchased power regulatory liability (Note 3)	9,688	0
Other regulatory liabilities (Note 3)	136,078	130,549
Other current liabilities	197,861	178,962
Total current liabilities	1,442,317	1,559,143
LONG-TERM DEBT LESS CURRENT MATURITIES (Note 6)	3,462,391	3,006,573
DEFERRED CREDITS AND OTHER
Deferred income taxes	2,723,425	2,582,636
Regulatory liabilities (Notes 1, 3, 4 and 7)	994,152	1,051,196
Liabilities for asset retirements (Note 11)	415,003	358,288
Liabilities for pension benefits (Note 7)	480,998	453,736
Liabilities from risk management activities (Note 16)	89,973	50,602
Customer advances	115,609	123,052
Coal mine reclamation	201,984	198,292
Deferred investment tax credit	187,080	178,607
Unrecognized tax benefits (Note 4)	9,524	19,377
Other	186,345	188,286
Total deferred credits and other	$ 5,404,093	$ 5,204,072
COMMITMENTS AND CONTINGENCIES (SEE NOTES)
EQUITY
Common stock, no par value; authorized 150,000,000 shares, 111,095,402 and 110,649,762 issued at respective dates	$ 2,541,668	$ 2,512,970
Treasury stock at cost; 115,030 shares at end of 2015 and 78,400 shares at end of 2014	(5,806)	(3,401)
Total common stock	2,535,862	2,509,569
Retained earnings	2,092,803	1,926,065
Accumulated other comprehensive loss:
Pension and other postretirement benefits (Note 7)	(37,593)	(57,756)
Derivative instruments (Note 16)	(7,155)	(10,385)
Total accumulated other comprehensive loss	(44,748)	(68,141)
Total shareholders’ equity	4,583,917	4,367,493
Noncontrolling interests (Note 18)	135,540	151,609
Total equity	4,719,457	4,519,102
Total Liabilities and Equity	15,028,258	14,288,890
ARIZONA PUBLIC SERVICE COMPANY
CURRENT ASSETS
Cash and cash equivalents	22,056	4,515
Customer and other receivables	274,428	297,712
Accrued unbilled revenues	96,240	100,533
Allowance for doubtful accounts	(3,125)	(3,094)
Materials and supplies (at average cost)	234,234	218,889
Fossil fuel (at average cost)	45,697	37,097
Deferred income taxes (Note 4)	0	55,253
Assets from risk management activities (Note 16)	15,905	13,785
Deferred fuel and purchased power regulatory asset (Note 3)	0	6,926
Other regulatory assets (Note 3)	149,555	129,808
Other current assets	35,765	38,693
Total current assets	870,755	900,117
INVESTMENTS AND OTHER ASSETS
Assets from risk management activities (Note 16)	12,106	17,620
Nuclear decommissioning trust (Notes 13 and 19)	735,196	713,866
Other assets	34,455	33,362
Total investments and other assets	781,757	764,848
PROPERTY, PLANT AND EQUIPMENT (Notes 1, 6 and 9)
Plant in service and held for future use	16,218,724	15,539,811
Accumulated depreciation and amortization	(5,590,937)	(5,394,650)
Net	10,627,787	10,145,161
Construction work in progress	812,845	682,807
Palo Verde sale leaseback, net of accumulated depreciation of $233,665 and $229,795 (Note 18)	117,385	121,255
Intangible assets, net of accumulated amortization of $546,038 and $489,538	123,820	119,600
Nuclear fuel, net of accumulated amortization of $146,228 and $143,554	123,139	125,201
Total property, plant and equipment	11,804,976	11,194,024
DEFERRED DEBITS
Regulatory assets (Notes 1, 3 and 4)	1,214,146	1,054,087
Assets for other postretirement benefits (Note 7)	182,625	149,260
Other	127,923	128,026
Total deferred debits	1,524,694	1,331,373
Total Assets	14,982,182	14,190,362
CURRENT LIABILITIES
Accounts payable	291,574	289,930
Accrued taxes (Note 4)	144,488	131,110
Accrued interest	56,003	52,358
Common dividends payable	69,400	65,800
Short-term borrowings (Note 5)	0	147,400
Current maturities of long-term debt (Note 6)	357,580	383,570
Customer deposits	73,073	72,307
Liabilities from risk management activities (Note 16)	77,716	59,676
Liabilities for asset retirements (Note 11)	28,573	32,462
Deferred fuel and purchased power regulatory liability (Note 3)	9,688	0
Other regulatory liabilities (Note 3)	136,078	130,549
Other current liabilities	180,535	167,302
Total current liabilities	1,424,708	1,532,464
DEFERRED CREDITS AND OTHER
Deferred income taxes	2,764,489	2,571,365
Regulatory liabilities (Notes 1, 3, 4 and 7)	994,152	1,051,196
Liabilities for asset retirements (Note 11)	415,003	358,288
Liabilities for pension benefits (Note 7)	459,065	424,508
Liabilities from risk management activities (Note 16)	89,973	50,602
Customer advances	115,609	123,052
Coal mine reclamation	201,984	198,292
Deferred investment tax credit	187,080	178,607
Unrecognized tax benefits (Note 4)	35,251	45,740
Other	142,683	144,823
Total deferred credits and other	5,405,289	5,146,473
EQUITY
Total common stock	178,162	178,162
Additional paid-in capital	2,379,696	2,379,696
Retained earnings	2,148,493	1,968,718
Accumulated other comprehensive loss:
Pension and other postretirement benefits (Note 7)	(19,942)	(37,948)
Derivative instruments (Note 16)	(7,155)	(10,385)
Total accumulated other comprehensive loss	(27,097)	(48,333)
Total shareholders’ equity	4,679,254	4,478,243
Noncontrolling interests (Note 18)	135,540	151,609
Total equity	4,814,794	4,629,852
Long-term debt less current maturities (Note 6)	3,337,391	2,881,573
Total capitalization	8,152,185	7,511,425
Total Liabilities and Equity	$ 14,982,182	$ 14,190,362