Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Assets
Cash and cash equivalents	$ 247,443	$ 341,421
Restricted cash	10,618	17,558
Accounts receivable and unbilled revenues, net	312,727	281,216
Available-for-sale investment securities, at fair value	2,509,906	1,970,417
Held-to-maturity investment securities, at amortized cost	375,655	226,947
Stock in Federal Home Loan Bank, at cost	10,000	8,680
Loans held for investment, net	5,106,207	5,232,642
Loans held for sale, at lower of cost or fair value	50,877	28,275
Property, plant and equipment, net of accumulated depreciation	5,310,162	5,265,735
Regulatory assets	767,856	766,708
Other	668,368	629,149
Goodwill	82,190	82,190
Utility property, plant and equipment
Total property, plant and equipment, net	5,310,162	5,265,735
Current assets
Cash and cash equivalents	247,443	341,421
Other long-term assets
Operating lease right-of-use assets	154,720	153,069
Total assets	15,606,729	15,004,007
Liabilities
Accounts payable	175,060	182,347
Interest and dividends payable	20,284	23,547
Deposit liabilities	7,873,430	7,386,957
Short-term borrowings—other than bank	95,748	129,379
Other bank borrowings	129,665	89,670
Long-term debt, net—other than bank	2,258,043	2,119,129
Deferred income taxes	384,953	395,089
Operating lease liabilities	167,997	160,432
Regulatory liabilities	966,477	959,786
Defined benefit pension and other postretirement benefit plans liability	548,840	567,438
Other	584,610	618,438
Total liabilities	13,205,107	12,632,212
Capitalization
Retained earnings	714,317	660,398
Accumulated other comprehensive loss, net of tax benefits	(28,808)	(1,264)
Total shareholders’ equity	2,367,329	2,337,502
Preferred stock of subsidiaries - not subject to mandatory redemption	34,293	34,293
Commitments and contingencies
Current liabilities
Interest and dividends payable	20,284	23,547
Deferred credits and other liabilities
Deferred income taxes	384,953	395,089
Shareholders’ equity
Preferred stock, no par value, authorized 10,000,000 shares; issued: none	0	0
Common stock, no par value, authorized 200,000,000 shares; issued and outstanding: 109,311,034 shares and 109,181,124 shares at June 30, 2021 and December 31, 2020, respectively	1,681,820	1,678,368
Retained earnings	714,317	660,398
Accumulated other comprehensive loss, net of tax benefits	(28,808)	(1,264)
Total shareholders’ equity	2,367,329	2,337,502
Total liabilities and shareholders’ equity	15,606,729	15,004,007
Hawaiian Electric Company, Inc. and Subsidiaries
Assets
Cash and cash equivalents	23,666	47,360
Restricted cash	8,968	15,966
Property, plant and equipment, net of accumulated depreciation	4,976,830	4,937,170
Regulatory assets	25,600
Utility property, plant and equipment
Land	51,612	51,611
Plant and equipment	7,619,886	7,509,343
Less accumulated depreciation	(2,903,421)	(2,819,079)
Construction in progress	201,802	188,342
Utility property, plant and equipment, net	4,969,879	4,930,217
Nonutility property, plant and equipment, less accumulated depreciation	6,951	6,953
Total property, plant and equipment, net	4,976,830	4,937,170
Current assets
Cash and cash equivalents	23,666	47,360
Customer accounts receivable, net	152,392	147,832
Accrued unbilled revenues, net	132,978	101,036
Other accounts receivable, net	5,168	7,673
Fuel oil stock, at average cost	102,066	58,238
Materials and supplies, at average cost	72,959	67,344
Prepayments and other	31,913	44,083
Regulatory assets	59,905	30,435
Total current assets	590,015	519,967
Other long-term assets
Operating lease right-of-use assets	131,622	127,654
Regulatory assets	707,951	736,273
Other	141,556	136,309
Total other long-term assets	981,129	1,000,236
Total assets	6,547,974	6,457,373
Liabilities
Interest and dividends payable	17,827	20,350
Deferred income taxes	393,275	397,798
Capitalization
Common stock ($6 2/3 par value, authorized 50,000,000 shares; outstanding 17,324,376 shares at June 30, 2021 and December 31, 2020)	115,515	115,515
Premium on capital stock	746,987	746,987
Retained earnings	1,311,744	1,282,335
Accumulated other comprehensive loss, net of tax benefits	(2,850)	(2,919)
Total shareholders’ equity	2,171,396	2,141,918
Long-term debt, net	1,676,043	1,561,302
Total capitalization	3,881,732	3,737,513
Preferred stock of subsidiaries - not subject to mandatory redemption	34,293	34,293
Commitments and contingencies
Current liabilities
Current portion of operating lease liabilities	68,090	64,730
Short-term borrowings from non-affiliates	37,999	49,979
Accounts payable	131,633	133,849
Interest and dividends payable	17,827	20,350
Taxes accrued, including revenue taxes	175,814	192,524
Regulatory liabilities	31,713	37,301
Other	60,951	74,262
Total current liabilities	524,027	572,995
Deferred credits and other liabilities
Operating lease liabilities	76,066	69,494
Deferred income taxes	393,275	397,798
Regulatory liabilities	934,764	922,485
Unamortized tax credits	108,286	111,915
Defined benefit pension and other postretirement benefit plans liability	514,075	530,532
Other	115,749	114,641
Total deferred credits and other liabilities	2,142,215	2,146,865
Shareholders’ equity
Preferred stock, no par value, authorized 10,000,000 shares; issued: none	34,293	34,293
Retained earnings	1,311,744	1,282,335
Accumulated other comprehensive loss, net of tax benefits	(2,850)	(2,919)
Total shareholders’ equity	2,171,396	2,141,918
Total liabilities and shareholders’ equity	$ 6,547,974	$ 6,457,373