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Consolidated Statement of Changes in Common Stock Equity - HECO (USD $) In Thousands, except Share data, unless otherwise specified | Total | Hawaiian Electric Company, Inc. and Subsidiaries | Common stock. Hawaiian Electric Company, Inc. and Subsidiaries | Premium on capital stock Hawaiian Electric Company, Inc. and Subsidiaries | Retained earnings Hawaiian Electric Company, Inc. and Subsidiaries | Accumulated other comprehensive income (loss) Hawaiian Electric Company, Inc. and Subsidiaries
--- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2010 | $ 1,480,394 | $ 1,334,155 | $ 92,224 | $ 389,609 | $ 851,613 | $ 709
Balance (in shares) at Dec. 31, 2010 |  |  | 13,831,000 |  |  |
Increase (decrease) in stockholders' equity |  |  |  |  |  |
Net income for common stock | 55,601 | 36,213 |  |  | 36,213 |
Other comprehensive income, net of taxes | 2,629 | 74 |  |  |  | 74
Common stock dividends | (58,998) | (35,279) |  |  | (35,279) |
Balance at Jun. 30, 2011 | 1,508,964 | 1,335,163 | 92,224 | 389,609 | 852,547 | 783
Balance (in shares) at Jun. 30, 2011 |  |  | 13,831,000 |  |  |
Balance at Mar. 31, 2011 |  |  |  |  |  |
Increase (decrease) in stockholders' equity |  |  |  |  |  |
Net income for common stock | 27,139 | 17,024 |  |  |  |
Other comprehensive income, net of taxes | 4,467 | 47 |  |  |  |
Balance at Jun. 30, 2011 | 1,508,964 | 1,335,163 | 92,224 | 389,609 |  |
Balance (in shares) at Jun. 30, 2011 |  |  | 13,831,000 |  |  |
Balance at Dec. 31, 2011 | 1,528,706 | 1,402,841 | 94,911 | 426,921 | 881,041 | (32)
Balance (in shares) at Dec. 31, 2011 | 96,038,328 |  | 14,234,000 |  |  |
Increase (decrease) in stockholders' equity |  |  |  |  |  |
Net income for common stock | 77,116 | 56,676 |  |  | 56,676 |
Other comprehensive income, net of taxes | 1,861 | 152 |  |  |  | 152
Common stock dividends | (59,791) | (36,522) |  |  | (36,522) |
Common stock issue expenses |  | 1 |  | 1 |  |
Balance at Jun. 30, 2012 | 1,575,776 | 1,423,148 | 94,911 | 426,922 | 901,195 | 120
Balance (in shares) at Jun. 30, 2012 | 97,023,148 |  | 14,234,000 |  |  |
Balance at Mar. 31, 2012 |  |  |  |  |  |
Increase (decrease) in stockholders' equity |  |  |  |  |  |
Net income for common stock | 38,800 | 29,376 |  |  |  |
Other comprehensive income, net of taxes | 1,550 | 75 |  |  |  |
Balance at Jun. 30, 2012 | $ 1,575,776 | $ 1,423,148 | $ 94,911 |  |  |
Balance (in shares) at Jun. 30, 2012 | 97,023,148 |  | 14,234,000 |  |  |

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