CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
CASH FLOWS FROM OPERATING ACTIVITIES
NET INCOME	$ 148,234	$ 166,075
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization including nuclear fuel	282,218	246,371
Deferred fuel and purchased power	11,711	1,315
Deferred fuel and purchased power amortization	11,424	18,399
Allowance for equity funds used during construction	(18,569)	(14,941)
Deferred income taxes	65,377	32,611
Deferred investment tax credit	(2,218)	28,875
Change in derivative instruments fair value	(225)	49
Changes in current assets and liabilities:
Customer and other receivables	(17,402)	(64,986)
Accrued unbilled revenues	(84,683)	(75,648)
Materials, supplies and fossil fuel	(18,311)	(9,435)
Income tax receivable	3,098	135,517
Other current assets	(8,728)	(14,038)
Accounts payable	36,634	30,725
Accrued taxes	15,199	30,709
Other current liabilities	(13,138)	19,978
Change in margin and collateral accounts — assets	(4,552)	(2,107)
Change in margin and collateral accounts — liabilities	26,853	(22,425)
Change in other long-term assets	(4,817)	(19,243)
Change in other long-term liabilities	(33,811)	(22,735)
Net cash flow provided by operating activities	394,294	465,066
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(531,035)	(388,752)
Contributions in aid of construction	41,010	12,646
Allowance for borrowed funds used during construction	(8,538)	(7,560)
Proceeds from nuclear decommissioning trust sales	225,779	199,224
Investment in nuclear decommissioning trust	(234,651)	(207,848)
Other	(2,068)	(678)
Net cash flow used for investing activities	(509,503)	(392,968)
CASH FLOWS FROM FINANCING ACTIVITIES
Issuance of long-term debt	600,000	535,975
Repayment of long-term debt	(344,847)	(503,583)
Short-term borrowings and payments — net	10,100	23,525
Dividends paid on common stock	(128,241)	(125,138)
Common stock equity issuance	12,161	12,625
Distributions to noncontrolling interest	(28,012)	(15,869)
Other	1	2
Net cash flow provided by (used for) financing activities	121,162	(72,463)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	5,953	(365)
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	7,604	9,526
CASH AND CASH EQUIVALENTS AT END OF PERIOD	13,557	9,161
Cash paid (received) during the period for:
Income taxes, net of refunds	1,834	(131,154)
Interest, net of amounts capitalized	84,008	90,707
Significant non-cash investing and financing activities:
Accrued capital expenditures	38,985	19,668
Dividends declared but not yet paid	65,933	62,656
Arizona Public Service Company
CASH FLOWS FROM OPERATING ACTIVITIES
NET INCOME	154,440	172,285
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization including nuclear fuel	282,172	246,324
Deferred fuel and purchased power	11,711	1,315
Deferred fuel and purchased power amortization	11,424	18,399
Allowance for equity funds used during construction	(18,569)	(14,941)
Deferred income taxes	24,442	34,133
Deferred investment tax credit	(2,218)	28,875
Change in derivative instruments fair value	(225)	49
Changes in current assets and liabilities:
Customer and other receivables	(9,250)	(65,603)
Accrued unbilled revenues	(84,683)	(75,648)
Materials, supplies and fossil fuel	(18,311)	(9,435)
Income tax receivable	0	135,179
Other current assets	(8,193)	(14,120)
Accounts payable	37,656	28,465
Accrued taxes	68,382	38,381
Other current liabilities	(31,408)	31,296
Change in margin and collateral accounts — assets	(4,552)	(2,107)
Change in margin and collateral accounts — liabilities	26,853	(22,425)
Change in other long-term assets	(6,765)	(18,703)
Change in other long-term liabilities	(27,136)	(24,467)
Net cash flow provided by operating activities	405,770	487,252
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(530,850)	(388,752)
Contributions in aid of construction	41,010	12,646
Allowance for borrowed funds used during construction	(8,527)	(7,560)
Proceeds from nuclear decommissioning trust sales	225,779	199,224
Investment in nuclear decommissioning trust	(234,651)	(207,848)
Other	(614)	(678)
Net cash flow used for investing activities	(507,853)	(392,968)
CASH FLOWS FROM FINANCING ACTIVITIES
Issuance of long-term debt	600,000	535,975
Repayment of long-term debt	(344,847)	(503,583)
Short-term borrowings and payments — net	10,100	19,650
Dividends paid on common stock	(131,700)	(125,100)
Distributions to noncontrolling interest	(28,012)	(15,869)
Net cash flow provided by (used for) financing activities	105,541	(88,927)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	3,458	5,357
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	4,515	3,725
CASH AND CASH EQUIVALENTS AT END OF PERIOD	7,973	9,082
Cash paid (received) during the period for:
Income taxes, net of refunds	184	(134,399)
Interest, net of amounts capitalized	82,651	88,461
Significant non-cash investing and financing activities:
Accrued capital expenditures	38,985	19,668
Dividends declared but not yet paid	$ 65,900	$ 62,600