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SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF REGISTRANT - STATEMENTS OF INCOME (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Revenues |  |  |
Revenues | $ 3,465,215 | $ 2,521,425 |
Expenses: |  |  |
Depreciation of property, plant and equipment | 256,069 | 246,158 | $ 238,114
Total expenses | 3,360,912 | 2,464,313 | 2,268,282
Less: Retirement defined benefits expense (credit)—other than service costs | (4,411) | (5,848) | 3,210
Interest expense | 116,703 | 99,403 | 99,808
Income before income taxes | 304,195 | 310,863 | 240,624
Income tax benefits | (61,167) | (62,807) | (40,910)
Net income for common stock | 241,138 | 246,166 | 197,824
Hawaiian Electric (parent only) |  |  |
Revenues |  |  |
Revenues | 320 | 105 | 208
Equity in net income of subsidiaries | 273,076 | 278,743 | 227,098
Expenses: |  |  |
Operating, administrative and general | 20,850 | 24,006 | 20,731
Depreciation of property, plant and equipment | 399 | 414 | 485
Taxes, other than income taxes | 732 | 514 | 654
Total expenses | 21,981 | 24,934 | 21,870
Income before interest expense and income tax benefits | 251,415 | 253,914 | 205,436
Less: Retirement defined benefits expense (credit)—other than service costs | 147 | (114) | 634
Interest expense | 21,997 | 18,444 | 18,237
Income before income taxes | 229,271 | 235,584 | 186,565
Income tax benefits | 11,867 | 10,582 | 11,259
Net income for common stock | $ 241,138 | $ 246,166 | $ 197,824

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