Condensed Consolidated Statements of Cash Flows (unaudited) - USD ($)	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Cash flows from operating activities
Net income	$ 134,344,000	$ 205,039,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation of property, plant and equipment	150,123,000	145,684,000
Other amortization	15,362,000	7,368,000
Provision for loan losses	7,231,000	15,266,000
Loans receivable originated and purchased, held for sale	(105,816,000)	(172,657,000)
Proceeds from sale of loans receivable, held for sale	119,731,000	168,490,000
Deferred income taxes	21,397,000	30,667,000
Share-based compensation expense	4,383,000	3,581,000
Allowance for equity funds used during construction	(8,908,000)	(6,010,000)
Other	(1,350,000)	3,234,000
Changes in assets and liabilities
Increase in accounts receivable and unbilled revenues, net	(26,250,000)	(12,104,000)
Decrease in fuel oil stock	6,177,000	6,736,000
Decrease (increase) in regulatory assets	3,922,000	(2,251,000)
Increase (decrease) in accounts, interest and dividends payable	(10,390,000)	3,399,000
Change in prepaid and accrued income taxes, tax credits and utility revenue taxes	2,828,000	52,558,000
Increase in defined benefit pension and other postretirement benefit plans liability	670,000	150,000
Change in other assets and liabilities	(22,311,000)	(39,850,000)
Net cash provided by operating activities	291,143,000	409,300,000
Cash flows from investing activities
Available-for-sale investment securities purchased	(369,467,000)	(354,165,000)
Principal repayments on available-for-sale investment securities	155,026,000	172,829,000
Proceeds from sale of available-for-sale investment securities	0	16,423,000
Purchase of stock from Federal Home Loan Bank	(2,868,000)	(2,773,000)
Redemption of stock from Federal Home Loan Bank	4,380,000	2,233,000
Net decrease (increase) in loans held for investment	13,188,000	(175,303,000)
Proceeds from sale of commercial loans	31,427,000	37,946,000
Proceeds from sale of real estate acquired in settlement of loans	411,000	829,000
Proceeds from sale of real estate held-for-sale	0	1,764,000
Capital expenditures	(314,404,000)	(259,207,000)
Contributions in aid of construction	40,603,000	23,568,000
Other	1,345,000	112,000
Net cash used in investing activities	(440,359,000)	(535,744,000)
Cash flows from financing activities
Net increase in deposit liabilities	203,397,000	355,467,000
Net increase (decrease) in short-term borrowings with original maturities of three months or less	24,498,000	(103,063,000)
Net increase (decrease) in retail repurchase agreements	24,469,000	(21,121,000)
Proceeds from other bank borrowings	59,500,000	55,835,000
Repayments of other bank borrowings	(123,034,000)	(97,902,000)
Proceeds from issuance of long-term debt	265,000,000	75,000,000
Repayment of long-term debt and funds transferred for redemption of special purpose revenue bonds	(265,000,000)	(75,000,000)
Withheld shares for employee taxes on vested share-based compensation	(3,796,000)	(2,398,000)
Net proceeds from issuance of common stock	0	10,901,000
Common stock dividends	(101,149,000)	(83,620,000)
Preferred stock dividends of subsidiaries	(1,417,000)	(1,417,000)
Other	(9,531,000)	(2,361,000)
Net cash provided by financing activities	72,937,000	110,321,000
Net decrease in cash and cash equivalents	(76,279,000)	(16,123,000)
Cash and cash equivalents, beginning of period	278,452,000	300,478,000
Cash and cash equivalents, end of period	202,173,000	284,355,000
Hawaiian Electric Company, Inc. and Subsidiaries
Cash flows from operating activities
Net income	96,092,000	109,694,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation of property, plant and equipment	144,578,000	140,300,000
Other amortization	6,118,000	5,380,000
Deferred income taxes	29,537,000	55,648,000
Allowance for equity funds used during construction	(8,908,000)	(6,010,000)
Other	526,000	3,234,000
Changes in assets and liabilities
Increase in accounts receivable	(8,087,000)	(655,000)
Increase in accrued unbilled revenues	(18,014,000)	(10,658,000)
Decrease in fuel oil stock	6,177,000	6,736,000
Increase in materials and supplies	(2,280,000)	(2,927,000)
Decrease (increase) in regulatory assets	3,922,000	(2,251,000)
Increase (decrease) in accounts payable	(22,841,000)	(676,000)
Change in prepaid and accrued income taxes, tax credits and utility revenue taxes	5,291,000	(9,595,000)
Increase in defined benefit pension and other postretirement benefit plans liability	453,000	360,000
Change in other assets and liabilities	(2,662,000)	(13,309,000)
Net cash provided by operating activities	229,902,000	275,271,000
Cash flows from investing activities
Capital expenditures	(278,004,000)	(250,704,000)
Contributions in aid of construction	40,603,000	23,568,000
Other	8,114,000	1,100,000
Net cash used in investing activities	(229,287,000)	(226,036,000)
Cash flows from financing activities
Net increase (decrease) in short-term borrowings with original maturities of three months or less	6,000,000	21,000,000
Proceeds from issuance of long-term debt	265,000,000	0
Repayment of long-term debt and funds transferred for redemption of special purpose revenue bonds	(265,000,000)	0
Common stock dividends	(65,825,000)	(70,199,000)
Preferred stock dividends of Hawaiian Electric and subsidiaries	(1,496,000)	(1,496,000)
Other	(3,593,000)	(12,000)
Net cash provided by financing activities	(64,914,000)	(50,707,000)
Net decrease in cash and cash equivalents	(64,299,000)	(1,472,000)
Cash and cash equivalents, beginning of period	74,286,000	24,449,000
Cash and cash equivalents, end of period	$ 9,987,000	$ 22,977,000