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Electric utility subsidiary - Consolidating statement of income (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2015 | Jun. 30, 2014 | Jun. 30, 2015 | Jun. 30, 2014
Operating expenses |  |  |  |  |  |
Purchased power | $ 149,000 | $ 188,000 | $ 285,000 |  | $ 353,000 |
Total expenses | 551,182 | 715,474 | 1,119,538 |  | 1,410,009 |
Operating income | 72,730 | 83,183 | 142,236 |  | 172,397 |
Other income (loss) |  |  |  |  |  |
Allowance for equity funds used during construction | 1,896 | 1,387 | 3,309 | [1] | 2,996 | [1]
Interest and other charges |  |  |  |  |  |
Allowance for borrowed funds used during construction | 682 | 523 | 1,181 |  | 1,137 |
Income taxes | 20,911 | 23,317 | 40,890 |  | 49,038 |
Net income | 35,491 | 41,754 | 67,830 | [1] | 88,014 | [1]
Preferred stock dividends of subsidiaries | 473 | 473 | 946 |  | 946 |
Net income for common stock | 35,018 | 41,281 | 66,884 |  | 87,068 |
Hawaiian Electric Company |  |  |  |  |  |
Condensed Income Statements, Captions [Line Items] |  |  |  |  |  |
Revenues | 391,007 | 530,991 | 790,748 |  | 1,043,446 |
Operating expenses |  |  |  |  |  |
Fuel oil | 104,278 | 195,549 | 222,681 |  | 399,096 |
Purchased power | 107,370 | 140,805 | 210,620 |  | 264,774 |
Other operation and maintenance | 66,428 | 68,992 | 136,512 |  | 127,507 |
Depreciation | 29,389 | 27,300 | 58,778 |  | 54,601 |
Taxes, other than income taxes | 37,479 | 49,949 | 75,680 |  | 98,133 |
Total expenses | 344,944 | 482,595 | 704,271 |  | 944,111 |
Operating income | 46,063 | 48,396 | 86,477 |  | 99,335 |
Other income (loss) |  |  |  |  |  |
Allowance for equity funds used during construction | 1,581 | 1,417 | 2,704 |  | 2,889 |
Equity in earnings of subsidiaries | 9,624 | 9,859 | 17,316 |  | 18,776 |
Interest and other charges |  |  |  |  |  |
Interest expense and other charges, net | (11,290) | (11,553) | (22,528) |  | (22,040) |
Allowance for borrowed funds used during construction | 564 | 535 | 952 |  | 1,094 |
Income before income taxes | 46,542 | 48,654 | 84,921 |  | 100,054 |
Income taxes | 13,431 | 14,154 | 24,666 |  | 29,864 |
Net income | 33,111 | 34,500 | 60,255 |  | 70,190 |
Net income attributable to Hawaiian Electric | 33,111 | 34,500 | 60,255 |  | 70,190 |
Preferred stock dividends of Hawaiian Electric | 270 | 270 | 540 |  | 540 |
Net income for common stock | 32,841 | 34,230 | 59,715 |  | 69,650 |
HELCO |  |  |  |  |  |
Condensed Income Statements, Captions [Line Items] |  |  |  |  |  |
Revenues | 83,732 | 103,544 | 171,787 |  | 208,475 |
Operating expenses |  |  |  |  |  |
Fuel oil | 16,241 | 31,179 | 39,626 |  | 62,679 |
Purchased power | 24,555 | 28,170 | 46,448 |  | 57,661 |
Other operation and maintenance | 16,158 | 14,817 | 32,557 |  | 28,864 |
Depreciation | 9,312 | 8,976 | 18,625 |  | 17,951 |
Taxes, other than income taxes | 7,944 | 9,757 | 16,328 |  | 19,520 |
Total expenses | 74,210 | 92,899 | 153,584 |  | 186,675 |
Operating income | 9,522 | 10,645 | 18,203 |  | 21,800 |
Other income (loss) |  |  |  |  |  |
Allowance for equity funds used during construction | 165 | 121 | 310 |  | 186 |
Interest and other charges |  |  |  |  |  |
Interest expense and other charges, net | (2,592) | (2,852) | (5,272) |  | (5,600) |
Allowance for borrowed funds used during construction | 58 | 47 | 111 |  | 72 |
Income before income taxes | 7,153 | 7,961 | 13,352 |  | 16,458 |
Income taxes | 2,536 | 2,982 | 4,813 |  | 6,184 |
Net income | 4,617 | 4,979 | 8,539 |  | 10,274 |
Preferred stock dividends of subsidiaries | 133 | 133 | 267 |  | 267 |
Net income attributable to Hawaiian Electric | 4,484 | 4,846 | 8,272 |  | 10,007 |
Net income for common stock | 4,484 | 4,846 | 8,272 |  | 10,007 |
Maui Electric |  |  |  |  |  |
Condensed Income Statements, Captions [Line Items] |  |  |  |  |  |
Revenues | 83,442 | 103,916 | 169,116 |  | 206,609 |
Operating expenses |  |  |  |  |  |
Fuel oil | 25,712 | 43,529 | 60,730 |  | 94,782 |
Purchased power | 17,359 | 19,348 | 28,223 |  | 30,804 |
Other operation and maintenance | 16,278 | 14,755 | 33,797 |  | 30,799 |
Depreciation | 5,540 | 5,317 | 11,081 |  | 10,644 |
Taxes, other than income taxes | 7,959 | 9,918 | 16,122 |  | 19,942 |
Total expenses | 72,848 | 92,867 | 149,953 |  | 186,971 |
Operating income | 10,594 | 11,049 | 19,163 |  | 19,638 |
Other income (loss) |  |  |  |  |  |
Allowance for equity funds used during construction | 150 | (151) | 295 |  | (79) |
Interest and other charges |  |  |  |  |  |
Interest expense and other charges, net | (2,424) | (2,469) | (4,859) |  | (4,974) |
Allowance for borrowed funds used during construction | 60 | (59) | 118 |  | (29) |
Income before income taxes | 8,380 | 8,370 | 14,717 |  | 14,556 |
Income taxes | 3,144 | 3,261 | 5,482 |  | 5,596 |
Net income | 5,236 | 5,109 | 9,235 |  | 8,960 |
Preferred stock dividends of subsidiaries | 96 | 96 | 191 |  | 191 |
Net income attributable to Hawaiian Electric | 5,140 | 5,013 | 9,044 |  | 8,769 |
Net income for common stock | 5,140 | 5,013 | 9,044 |  | 8,769 |
Other subsidiaries |  |  |  |  |  |
Condensed Income Statements, Captions [Line Items] |  |  |  |  |  |
Revenues | 0 | 0 | 0 |  | 0 |
Operating expenses |  |  |  |  |  |
Other operation and maintenance | 0 | 0 | 0 |  | 0 |
Total expenses | 0 | 0 | 0 |  | 0 |
Operating income | 0 | 0 | 0 |  | 0 |
Interest and other charges |  |  |  |  |  |
Income before income taxes | 0 | 0 | 0 |  | 0 |
Income taxes | 0 | 0 | 0 |  | 0 |
Net income | 0 | 0 | 0 |  | 0 |
Net income attributable to Hawaiian Electric | 0 | 0 | 0 |  | 0 |
Net income for common stock | 0 | 0 | 0 |  | 0 |
Consolidating adjustments |  |  |  |  |  |
Condensed Income Statements, Captions [Line Items] |  |  |  |  |  |
Revenues | (18) | (22) | (46) |  | (39) |
Operating expenses |  |  |  |  |  |
Operating income | (18) | (22) | (46) |  | (39) |
Other income (loss) |  |  |  |  |  |
Equity in earnings of subsidiaries | (9,624) | (9,859) | (17,316) |  | (18,776) |
Interest and other charges |  |  |  |  |  |
Interest expense and other charges, net | 18 | 22 | 46 |  | 39 |
Income before income taxes | (9,624) | (9,859) | (17,316) |  | (18,776) |
Income taxes | 0 | 0 | 0 |  | 0 |
Net income | (9,624) | (9,859) | (17,316) |  | (18,776) |
Net income attributable to Hawaiian Electric | (9,624) | (9,859) | (17,316) |  | (18,776) |
Net income for common stock | (9,624) | (9,859) | (17,316) |  | (18,776) |
HECO Consolidated |  |  |  |  |  |
Condensed Income Statements, Captions [Line Items] |  |  |  |  |  |
Revenues | 558,163 | 738,429 | 1,131,605 |  | 1,458,491 |
Operating expenses |  |  |  |  |  |
Fuel oil | 146,231 | 270,257 | 323,037 |  | 556,557 |
Purchased power | 149,284 | 188,323 | 285,291 |  | 353,239 |
Other operation and maintenance | 98,864 | 98,564 | 202,866 |  | 187,170 |
Depreciation | 44,241 | 41,593 | 88,484 |  | 83,196 |
Taxes, other than income taxes | 53,382 | 69,624 | 108,130 |  | 137,595 |
Total expenses | 492,002 | 668,361 | 1,007,808 |  | 1,317,757 |
Operating income | 66,161 | 70,068 | 123,797 |  | 140,734 |
Other income (loss) |  |  |  |  |  |
Allowance for equity funds used during construction | 1,896 | 1,387 | 3,309 | [1] | 2,996 | [1]
Interest and other charges |  |  |  |  |  |
Interest expense and other charges, net | (16,288) | (16,852) | (32,613) |  | (32,575) |
Allowance for borrowed funds used during construction | 682 | 523 | 1,181 |  | 1,137 |
Income before income taxes | 52,451 | 55,126 | 95,674 |  | 112,292 |
Income taxes | 19,111 | 20,397 | 34,961 |  | 41,644 |
Net income | 33,340 | 34,729 | 60,713 | [1] | 70,648 | [1]
Preferred stock dividends of subsidiaries | 229 | 229 | 458 |  | 458 |
Net income attributable to Hawaiian Electric | 33,111 | 34,500 | 60,255 |  | 70,190 |
Preferred stock dividends of Hawaiian Electric | 270 | 270 | 540 |  | 540 |
Net income for common stock | $ 32,841 | $ 34,230 | $ 59,715 |  | $ 69,650 |
[1] | As restated - See Note 1, “Basis of presentation - Restatement of previously issued financial statements.”

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