Condensed Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash flows from operating activities
Net income	$ 40,720	$ 34,666
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation of property, plant and equipment	53,091	50,051
Other amortization	8,745	2,372
Provision for loan losses	3,541	3,907
Loans originated and purchased, held for sale	(36,409)	(35,725)
Proceeds from sale of loans, held for sale	33,114	40,588
Deferred income taxes	(2,889)	10,096
Share-based compensation expense	1,657	1,056
Allowance for equity funds used during construction	(3,294)	(2,399)
Other	2,150	(347)
Changes in assets and liabilities
Increase in accounts receivable and unbilled revenues, net	(7,829)	(12,337)
Increase in fuel oil stock	(1,704)	(7,444)
Decrease (increase) in regulatory assets	(16,900)	5,909
Increase in accounts, interest and dividends payable	22,808	24,903
Change in prepaid and accrued income taxes, tax credits and utility revenue taxes	(29,842)	(42,175)
Increase (decrease) in defined benefit pension and other postretirement benefit plans liability	(390)	1,012
Change in other assets and liabilities	(31,892)	(27,142)
Net cash provided by operating activities	34,677	46,991
Cash flows from investing activities
Available-for-sale investment securities purchased	(88,403)	(171,878)
Principal repayments on available-for-sale investment securities	51,895	48,200
Principal repayment of held-to-maturity investment securities	1,032	0
Purchase of stock from Federal Home Loan Bank	(2,853)	(488)
Redemption of stock from Federal Home Loan Bank	2,400	0
Net decrease (increase) in loans held for investment	(75,006)	890
Proceeds from sale of commercial loans	7,149	13,493
Proceeds from sale of real estate acquired in settlement of loans	589	185
Capital expenditures	(133,352)	(91,242)
Contributions in aid of construction	4,330	10,650
Contributions to low income housing investments	(1,425)	0
Other	2,593	5,709
Net cash used in investing activities	(231,051)	(184,481)
Cash flows from financing activities
Net increase in deposit liabilities	86,095	126,161
Net increase in short-term borrowings with original maturities of three months or less	120,485	2,300
Net increase in retail repurchase agreements	11,946	21,071
Proceeds from other bank borrowings	60,000	0
Repayments of other bank borrowings	(60,000)	(13,534)
Withheld shares for employee taxes on vested share-based compensation	(991)	(3,687)
Common stock dividends	(33,741)	(33,713)
Preferred stock dividends of subsidiaries	(473)	(473)
Other	(4,043)	(4,857)
Net cash provided by financing activities	179,278	93,268
Net decrease in cash and cash equivalents	(17,096)	(44,222)
Cash and cash equivalents, beginning of period	261,881	278,452
Cash and cash equivalents, end of period	244,785	234,230
Hawaiian Electric Company, Inc. and Subsidiaries
Cash flows from operating activities
Net income	27,974	21,964
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation of property, plant and equipment	50,466	48,216
Other amortization	5,344	1,949
Deferred income taxes	(1,580)	11,064
Allowance for equity funds used during construction	(3,294)	(2,399)
Other	2,681	436
Changes in assets and liabilities
Increase in accounts receivable	(15,037)	(7,328)
Decrease (increase) in accrued unbilled revenues	7,419	(5,939)
Increase in fuel oil stock	(1,850)	(7,444)
Increase in materials and supplies	(1,295)	(3,366)
Decrease (increase) in regulatory assets	(16,900)	5,909
Increase (decrease) in accounts payable	5,143	17,231
Change in prepaid and accrued income taxes, tax credits and utility revenue taxes	(32,866)	(43,984)
Increase (decrease) in defined benefit pension and other postretirement benefit plans liability	(938)	264
Change in other assets and liabilities	4,513	(4,694)
Net cash provided by operating activities	29,780	31,879
Cash flows from investing activities
Capital expenditures	(114,457)	(84,712)
Contributions in aid of construction	4,330	10,650
Other	603	2,702
Net cash used in investing activities	(109,524)	(71,360)
Cash flows from financing activities
Net increase in short-term borrowings with original maturities of three months or less	116,984	1,500
Common stock dividends	(25,826)	(21,942)
Preferred stock dividends of Hawaiian Electric and subsidiaries	(499)	(499)
Other	(33)	(657)
Net cash provided by financing activities	90,626	(21,598)
Net decrease in cash and cash equivalents	10,882	(61,079)
Cash and cash equivalents, beginning of period	12,517	74,286
Cash and cash equivalents, end of period	$ 23,399	$ 13,207