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Income taxes - Components of Income Taxes Attributable to Net Income for Common Stock (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Federal |  |  |
Current | $ 51,455 | $ 23,207 | $ 28,736
Deferred | (11,689) | (4,215) | (4,353)
Deferred tax credits, net | 4,611 | 10,979 | 13,410
Federal taxes | 44,377 | 29,971 | 37,793
State |  |  |
Current | 12,119 | 8,430 | 10,472
Deferred | 6,290 | 2,509 | (10,732)
Deferred tax credits, net | 21 | 0 | 14,104
State taxes | 18,430 | 10,939 | 13,844
Total | 62,807 | 40,910 | 51,637
Hawaiian Electric Company, Inc. and Subsidiaries |  |  |
Federal |  |  |
Current | 42,794 | 31,950 | 21,751
Deferred | (12,109) | (5,408) | (7,793)
Deferred tax credits, net | 302 | 1,549 | 13,155
Federal taxes | 30,987 | 28,091 | 27,113
State |  |  |
Current | 4,861 | 3,768 | 5,579
Deferred | 8,279 | 8,559 | (8,491)
Deferred tax credits, net | 21 | 0 | 14,104
State taxes | 13,161 | 12,327 | 11,192
Total | $ 44,148 | $ 40,418 | $ 38,305

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