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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2016 | Mar. 31, 2015
CASH FLOWS FROM OPERATING ACTIVITIES |  |
NET INCOME | $ 9,326 | $ 20,727
Adjustments to reconcile net income to net cash provided by operating activities: |  |
Depreciation and amortization including nuclear fuel | 140,759 | 141,494
Deferred fuel and purchased power | 1,007 | 17,671
Deferred fuel and purchased power amortization | 2,388 | 5,614
Allowance for equity funds used during construction | (10,516) | (9,224)
Deferred income taxes | 3,468 | 6,978
Deferred investment tax credit | (114) | (294)
Change in derivative instruments fair value | (111) | (104)
Changes in current assets and liabilities: |  |
Customer and other receivables | 47,282 | 39,174
Accrued unbilled revenues | 6,445 | 6,133
Materials, supplies and fossil fuel | 1,525 | (9,995)
Income tax receivable | (4,048) | (219)
Other current assets | (8,131) | (9,631)
Accounts payable | (38,443) | (35,673)
Accrued taxes | 43,289 | 48,111
Other current liabilities | (38,040) | (56,747)
Change in margin and collateral accounts — assets | 681 | (276)
Change in margin and collateral accounts — liabilities | 410 | (13,420)
Change in other long-term assets | (17,504) | (13,126)
Change in other long-term liabilities | 4,536 | 6,955
Net cash flow provided by operating activities | 144,209 | 144,148
CASH FLOWS FROM INVESTING ACTIVITIES |  |
Capital expenditures | (378,500) | (251,041)
Contributions in aid of construction | 12,464 | 27,222
Allowance for borrowed funds used during construction | (5,227) | (4,216)
Proceeds from nuclear decommissioning trust sales | 141,809 | 115,282
Investment in nuclear decommissioning trust | (142,379) | (119,594)
Other | (472) | (470)
Net cash flow used for investing activities | (372,305) | (232,817)
CASH FLOWS FROM FINANCING ACTIVITIES |  |
Issuance of long-term debt | 0 | 250,000
Short-term borrowings and payments — net | 261,800 | (102,900)
Dividends paid on common stock | (67,611) | (64,061)
Common stock equity issuance - net of purchases | 8,902 | 9,690
Other | 1 | 0
Net cash flow provided by financing activities | 203,092 | 92,729
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS | (25,004) | 4,060
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD | 39,488 | 7,604
CASH AND CASH EQUIVALENTS AT END OF PERIOD | 14,484 | 11,664
Cash paid during the period for: |  |
Income taxes, net of refunds | 2,502 | 1,832
Interest, net of amounts capitalized | 56,139 | 53,555
Significant non-cash investing and financing activities: |  |
Accrued capital expenditures | 59,707 | 56,165
Arizona Public Service Company |  |
CASH FLOWS FROM OPERATING ACTIVITIES |  |
NET INCOME | 12,126 | 24,473
Adjustments to reconcile net income to net cash provided by operating activities: |  |
Depreciation and amortization including nuclear fuel | 140,729 | 141,471
Deferred fuel and purchased power | 1,007 | 17,671
Deferred fuel and purchased power amortization | 2,388 | 5,614
Allowance for equity funds used during construction | (10,516) | (9,224)
Deferred income taxes | 3,394 | 2,427
Deferred investment tax credit | (114) | (294)
Change in derivative instruments fair value | (111) | (104)
Changes in current assets and liabilities: |  |
Customer and other receivables | 47,575 | 43,070
Accrued unbilled revenues | 6,445 | 6,133
Materials, supplies and fossil fuel | 1,525 | (9,995)
Other current assets | (8,172) | (9,116)
Accounts payable | (34,999) | (35,604)
Accrued taxes | 38,784 | 59,057
Other current liabilities | (28,748) | (65,290)
Change in margin and collateral accounts — assets | 681 | (276)
Change in margin and collateral accounts — liabilities | 410 | (13,421)
Change in other long-term assets | (17,375) | (16,253)
Change in other long-term liabilities | (1,102) | 12,635
Net cash flow provided by operating activities | 153,927 | 152,974
CASH FLOWS FROM INVESTING ACTIVITIES |  |
Capital expenditures | (369,861) | (250,930)
Contributions in aid of construction | 12,464 | 27,222
Allowance for borrowed funds used during construction | (5,040) | (4,216)
Proceeds from nuclear decommissioning trust sales | 141,809 | 115,282
Investment in nuclear decommissioning trust | (142,379) | (119,594)
Other | (472) | (470)
Net cash flow used for investing activities | (363,479) | (232,706)
CASH FLOWS FROM FINANCING ACTIVITIES |  |
Issuance of long-term debt | 0 | 250,000
Short-term borrowings and payments — net | 261,800 | (102,900)
Dividends paid on common stock | (69,400) | (65,800)
Net cash flow provided by financing activities | 192,400 | 81,300
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS | (17,152) | 1,568
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD | 22,056 | 4,515
CASH AND CASH EQUIVALENTS AT END OF PERIOD | 4,904 | 6,083
Cash paid during the period for: |  |
Income taxes, net of refunds | 8,772 | 184
Interest, net of amounts capitalized | 55,580 | 52,825
Significant non-cash investing and financing activities: |  |
Accrued capital expenditures | $ 59,707 | $ 56,165

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- Definition Amount of cash (inflow) outflow from investing activities classified as other. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3098-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3095-108585 + Details
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- Definition Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3291-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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- Definition The cash outflow for purchases of and capital improvements on property, plant and equipment (capital expenditures), software, and other intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3213-108585 + Details
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- Definition The cash outflow for the purchase of investments that will be held in a decommissioning trust fund. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3213-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 + Details
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- Definition The cash inflow from developers, builders, governmental agencies and municipalities that provide the entity with cash to extend its construction services to their properties. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3179-108585 + Details
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- Definition The cash inflow from the sale of assets held in a decommissioning trust fund. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3179-108585 + Details
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- Definition The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3255-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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- Definition Amount of cash inflow (outflow) from financing activities classified as other. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3095-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3098-108585 + Details
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- Definition The net cash inflow or outflow for borrowing having initial term of repayment within one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 9 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3098-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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- Definition The net cash inflow or outflow resulting from the entity's share transaction. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3291-108585 + Details
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- Definition The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4K -URI http://asc.fasb.org/extlink&oid=65897068&loc=SL4591552-111686 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=68079674&loc=SL4569616-111683 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=64809438&loc=SL4573702-111684 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4J -URI http://asc.fasb.org/extlink&oid=65897068&loc=SL4591551-111686 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=64809438&loc=SL4573702-111684 + Details
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- Definition The component of the allowance for funds used during construction during the period based on an assumed rate of return on equity funds used in financing the construction of regulated assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 835 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6501569&loc=d3e55921-110430 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 835 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6501662&loc=d3e56162-110433 + Details
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- Definition The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 + Details
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