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Electric utility subsidiary - Consolidating financial statements (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2014 | Mar. 31, 2013
Operating expenses |  |
Purchased power | $ 165,000 | $ 153,000
Total expenses | 695,443 | 713,407
Operating income | 88,306 | 68,825
Other income (loss) |  |
Allowance for equity funds used during construction | 1,609 | 1,215
Interest and other charges |  |
Allowance for borrowed funds used during construction | 614 | 730
Income taxes | 24,673 | 17,887
Net income | 46,400 | 34,152
Preferred stock dividends of subsidiaries | 473 | 473
Net income for common stock | 45,927 | 33,679
Hawaiian Electric Company |  |
Revenues | 512,455 | 507,058
Operating expenses |  |
Fuel oil | 203,547 | 221,967
Purchased power | 123,969 | 111,155
Other operation and maintenance | 58,515 | 72,418
Depreciation | 27,301 | 24,707
Taxes, other than income taxes | 48,184 | 48,144
Total expenses | 461,516 | 478,391
Operating income | 50,939 | 28,667
Other income (loss) |  |
Allowance for equity funds used during construction | 1,472 | 983
Equity in earnings of subsidiaries | 8,917 | 10,985
Interest expense and other charges, net | (10,487) | (9,590)
Interest and other charges |  |
Allowance for borrowed funds used during construction | 559 | 568
Income before income taxes | 51,400 | 31,613
Income taxes | 15,710 | 6,914
Net income | 35,690 | 24,699
Net income attributable to Hawaiian Electric | 35,690 | 24,699
Preferred stock dividends of Hawaiian Electric | 270 | 270
Net income for common stock | 35,420 | 24,429
HELCO |  |
Revenues | 104,931 | 106,012
Operating expenses |  |
Fuel oil | 31,500 | 32,936
Purchased power | 29,491 | 30,122
Other operation and maintenance | 14,047 | 14,888
Depreciation | 8,975 | 8,547
Taxes, other than income taxes | 9,763 | 9,691
Total expenses | 93,776 | 96,184
Operating income | 11,155 | 9,828
Other income (loss) |  |
Allowance for equity funds used during construction | 65 | 138
Interest expense and other charges, net | (2,748) | (2,855)
Interest and other charges |  |
Allowance for borrowed funds used during construction | 25 | 92
Income before income taxes | 8,497 | 7,203
Income taxes | 3,202 | 2,649
Net income | 5,295 | 4,554
Preferred stock dividends of subsidiaries | 134 | 134
Net income attributable to Hawaiian Electric | 5,161 | 4,420
Net income for common stock | 5,161 | 4,420
Maui Electric |  |
Revenues | 102,693 | 104,399
Operating expenses |  |
Fuel oil | 51,253 | 50,197
Purchased power | 11,456 | 12,087
Other operation and maintenance | 16,044 | 14,507
Depreciation | 5,327 | 5,026
Taxes, other than income taxes | 10,024 | 9,928
Total expenses | 94,104 | 91,745
Operating income | 8,589 | 12,654
Other income (loss) |  |
Allowance for equity funds used during construction | 72 | 94
Interest expense and other charges, net | (2,505) | (2,102)
Interest and other charges |  |
Allowance for borrowed funds used during construction | 30 | 70
Income before income taxes | 6,186 | 10,716
Income taxes | 2,335 | 4,056
Net income | 3,851 | 6,660
Preferred stock dividends of subsidiaries | 95 | 95
Net income attributable to Hawaiian Electric | 3,756 | 6,565
Net income for common stock | 3,756 | 6,565
Other subsidiaries |  |
Revenues | 0 | 0
Operating expenses |  |
Other operation and maintenance | 0 | 0
Total expenses | 0 | 0
Operating income | 0 | 0
Interest and other charges |  |
Income before income taxes | 0 | 0
Income taxes | 0 | 0
Net income | 0 | 0
Net income attributable to Hawaiian Electric | 0 | 0
Net income for common stock | 0 | 0
Consolidating adjustments |  |
Revenues | (17) | (28)
Operating expenses |  |
Operating income | (17) | (28)
Other income (loss) |  |
Equity in earnings of subsidiaries | (8,917) | (10,985)
Interest expense and other charges, net | 17 | 28
Interest and other charges |  |
Income before income taxes | (8,917) | (10,985)
Income taxes | 0 | 0
Net income | (8,917) | (10,985)
Net income attributable to Hawaiian Electric | (8,917) | (10,985)
Net income for common stock | (8,917) | (10,985)
HECO Consolidated |  |
Revenues | 720,062 | 717,441
Operating expenses |  |
Fuel oil | 286,300 | 305,100
Purchased power | 164,916 | 153,364
Other operation and maintenance | 88,606 | 101,813
Depreciation | 41,603 | 38,280
Taxes, other than income taxes | 67,971 | 67,763
Total expenses | 649,396 | 666,320
Operating income | 70,666 | 51,121
Other income (loss) |  |
Allowance for equity funds used during construction | 1,609 | 1,215
Interest expense and other charges, net | (15,723) | (14,519)
Interest and other charges |  |
Allowance for borrowed funds used during construction | 614 | 730
Income before income taxes | 57,166 | 38,547
Income taxes | 21,247 | 13,619
Net income | 35,919 | 24,928
Preferred stock dividends of subsidiaries | 229 | 229
Net income attributable to Hawaiian Electric | 35,690 | 24,699
Preferred stock dividends of Hawaiian Electric | 270 | 270
Net income for common stock | $ 35,420 | $ 24,429

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