Consolidated Statements of Cash Flows - HECO (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Cash flows from operating activities
Net income	$ 38,789	$ 28,935
Adjustments to reconcile net income to net cash used in operating activities
Depreciation of property, plant and equipment	37,911	37,708
Other amortization	1,419	2,354
Change in deferred income taxes	21,260	16,687
Allowance for equity funds used during construction	(1,940)	(1,244)
Change in cash overdraft		(2,688)
Changes in assets and liabilities
Increase in fuel oil stock	(14,458)	(3,513)
Change in prepaid and accrued income taxes and utility revenue taxes	(41,126)	(1,594)
Contributions to defined benefit pension and other postretirement benefit plans	(26,815)	(31,200)
Change in other assets and liabilities	(30,994)	(10,224)
Net cash used in operating activities	(15,716)	(13,234)
Cash flows from investing activities
Capital expenditures	(65,300)	(38,491)
Contributions in aid of construction	22,855	5,749
Net cash used in investing activities	(80,862)	(96,391)
Cash flows from financing activities
Common stock dividends	(23,855)	(23,593)
Repayment of long-term debt	(57,500)	(50,000)
Net increase in short-term borrowings from nonaffiliates and affiliate with original maturities of three months or less	87,467	(24,923)
Other	(3,757)	(3,730)
Net cash provided by financing activities	62,659	95,228
Net decrease in cash and cash equivalents	(33,919)	(14,397)
Hawaiian Electric Company, Inc. and Subsidiaries
Cash flows from operating activities
Net income	27,799	19,688
Adjustments to reconcile net income to net cash used in operating activities
Depreciation of property, plant and equipment	36,482	36,432
Other amortization	1,561	2,288
Change in deferred income taxes	20,061	13,521
Change in tax credits, net	1,356	755
Allowance for equity funds used during construction	(1,940)	(1,244)
Change in cash overdraft		(2,688)
Changes in assets and liabilities
Decrease (increase) in accounts receivable	25,001	(11,271)
Decrease (increase) in accrued unbilled revenues	11,184	(9,402)
Increase in fuel oil stock	(14,458)	(3,513)
Increase in materials and supplies	(3,561)	(1,065)
Increase in regulatory assets	(13,948)	(7,872)
Decrease in accounts payable	(33,174)	(42,123)
Change in prepaid and accrued income taxes and utility revenue taxes	(44,561)	240
Contributions to defined benefit pension and other postretirement benefit plans	(26,183)	(30,693)
Change in other assets and liabilities	3,444	9,315
Net cash used in operating activities	(10,937)	(27,632)
Cash flows from investing activities
Capital expenditures	(63,436)	(37,556)
Contributions in aid of construction	22,855	5,749
Net cash used in investing activities	(40,581)	(31,807)
Cash flows from financing activities
Common stock dividends	(18,261)	(17,640)
Preferred stock dividends of HECO and subsidiaries	(499)	(499)
Repayment of long-term debt	(57,500)
Net increase in short-term borrowings from nonaffiliates and affiliate with original maturities of three months or less	84,942
Other	(120)	(4)
Net cash provided by financing activities	8,562	(18,143)
Net decrease in cash and cash equivalents	(42,956)	(77,582)
Cash and cash equivalents, beginning of period	48,806	122,936
Cash and cash equivalents, end of period	$ 5,850	$ 45,354