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Financial Statements Schedule I (Details 4) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Statements of Operations |  |  |
Net revenues | $ 1,294,829,413 | $ 1,898,922,106 | $ 1,495,509,056
Cost of revenues | 1,204,467,983 | 1,716,640,492 | 1,266,737,444
Gross profit | 90,361,430 | 182,281,614 | 228,771,612
Operating expenses: |  |  |
Selling expenses | 91,052,729 | 69,341,229 | 47,109,261
General and administrative expenses | 128,826,340 | 86,268,786 | 54,519,646
Research and development expenses | 12,998,122 | 19,838,547 | 6,843,216
Total operating expenses | 232,877,191 | 175,448,562 | 108,472,123
Profit from operations | (142,515,761) | 6,833,052 | 120,299,489
Other income (expenses): |  |  |
Interest expense | (53,304,640) | (43,843,586) | (22,164,363)
Interest income | 13,359,962 | 8,446,647 | 6,935,560
Investment loss | (1,081,700) |  | (3,000,000)
Foreign exchange gain (loss) | (10,707,889) | (40,007,403) | (36,291,898)
Income (loss) before income taxes | (198,619,201) | (74,322,271) | 67,435,716
Income tax expense | (5,433,410) | 16,539,940 | 16,753,917
Net income (loss) attributable to Canadian Solar Inc. | (195,468,691) | (90,804,200) | 50,568,919
Parent Company |  |  |
Statements of Operations |  |  |
Net revenues | 111,414,327 | 829,016,524 | 1,248,400,119
Cost of revenues | 80,190,744 | 792,643,306 | 1,201,713,356
Gross profit | 31,223,583 | 36,373,218 | 46,686,763
Operating expenses: |  |  |
Selling expenses | 3,649,131 | 10,411,256 | 10,057,347
General and administrative expenses | 11,955,578 | 13,461,891 | 13,355,609
Research and development expenses | 764,145 | 1,255,945 | 792,509
Total operating expenses | 16,368,854 | 25,129,092 | 24,205,465
Profit from operations | 14,854,729 | 11,244,126 | 22,481,298
Other income (expenses): |  |  |
Interest expense | (255,502) | (267,979) | (296,678)
Interest income | 1,559,207 | 474,886 | 933,372
Investment loss |  |  | (3,000,000)
Foreign exchange gain (loss) | (622,816) | 3,261,933 | 830,602
Income (loss) before income taxes | 15,535,618 | 14,712,966 | 20,948,594
Income tax expense | 7,441,590 | 6,742,827 | 9,956,513
Equity in earnings(loss) of subsidiaries | (203,562,719) | (98,774,339) | 39,576,838
Net income (loss) attributable to Canadian Solar Inc. | $ (195,468,691) | $ (90,804,200) | $ 50,568,919

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