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CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Net revenues: |  |  |
-Non-related parties | $ 1,284,316,201 | $ 1,879,247,942 | $ 1,495,509,056
-Related parties | 10,513,212 | 19,674,164 |
Total net revenues | 1,294,829,413 | 1,898,922,106 | 1,495,509,056
Cost of Revenue |  |  |
-Non-related parties | 1,193,507,964 | 1,696,421,523 | 1,266,737,444
-Related parties | 10,960,019 | 20,218,969 |
Total 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
Income (loss) 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
Gain (loss) on change in foreign currency derivatives | (4,369,173) | (5,750,981) | 1,656,928
Foreign exchange loss | (10,707,889) | (40,007,403) | (36,291,898)
Investment loss | (1,081,700) |  | (3,000,000)
Income (loss) before income taxes | (198,619,201) | (74,322,271) | 67,435,716
Income tax (expense) benefit | 5,433,410 | (16,539,940) | (16,753,917)
Equity in earnings (loss) of unconsolidated investees | (1,969,306) | (41,163) | 146,597
Net income (loss) | (195,155,097) | (90,903,374) | 50,828,396
Less: net income (loss) attributable to non-controlling interest | 313,594 | (99,174) | 259,477
Net income (loss) attributable to Canadian Solar Inc. | $ (195,468,691) | $ (90,804,200) | $ 50,568,919
Earnings (loss) per share-basic (in dollars per share) | $ (4.53) | $ (2.11) | $ 1.18
Shares used in computation - basic (in shares) | 43,190,778 | 43,076,489 | 42,839,356
Earnings (loss) per share-diluted (in dollars per share) | $ (4.53) | $ (2.11) | $ 1.16
Shares used in computation-diluted (in shares) | 43,190,778 | 43,076,489 | 43,678,208

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