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CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009
Operating activities: |  |  |
Net income (loss) | $ (90,903,374) | $ 50,828,396 | $ 22,778,199
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities: |  |  |
Depreciation and amortization | 56,117,280 | 31,266,181 | 20,508,383
Loss on disposal of property, plant and equipment | 1,223,163 | 194,243 | 174,292
Loss (Gain) on change in fair value of derivatives | 5,750,981 | (1,656,928) | (9,870,333)
Investment loss (income) | 41,163 | 2,853,403 | (1,788,036)
Allowance for doubtful debts | 23,156,857 | 3,046,100 | 18,076,416
Write-down of inventories | 8,456,260 | 2,101,124 | 12,478,944
Provision for firm purchase commitments | 10,610,410 | 1,562,002 | 13,822,818
Amortization of discount on debt | 44,485 | 39,816 | 35,638
Share-based compensation | 4,060,838 | 3,876,671 | 5,436,350
Changes in operating assets and liabilities: |  |  |
Inventories | (28,798,943) | (103,637,355) | (83,970,843)
Accounts receivable | (103,748,565) | (5,704,039) | (116,463,362)
Amount due from related parties | (18,135,684) | (1,347,828) |
Value added tax recoverable | 28,508,062 | (1,828,277) | (21,981,216)
Advances to suppliers | 13,458,006 | 2,227,991 | 6,751,157
Other non-current assets | (9,257,048) | (5,826,029) |
Accounts receivable, unbilled | (88,503,888) |  |
Prepaid expenses and other current assets | (2,969,210) | (6,424,395) | (15,111,379)
Accounts payable | 52,435,834 | 18,096,208 | 62,855,936
Short-term notes payable | 118,154,508 | (96,011,517) | 104,588,587
Other payables | 20,699,554 | 10,979,862 | 9,065,342
Advances from customers | 56,706,824 | 5,120,313 | 65,703
Amounts due to related parties | 484,649 | 2,163,515 | 166,900
Accrued warranty costs | 15,737,987 | 14,259,880 | 6,051,483
Provision for firm purchase commitments | (27,862,017) |  |
Loss contingency accruals | 27,862,017 |  |
Other current liabilities | (744,073) | 18,875,491 | 8,452,665
Prepaid land use right | 229,241 | (454,803) | 258,520
Liability for uncertain tax positions | 840,611 | 755,414 | 2,001,086
Deferred taxes | (4,632,976) | (5,179,877) | (10,834,919)
Settlement of foreign currency derivatives | (8,898,838) | 1,337,319 | 17,367,159
Net cash provided by (used in) operating activities | 60,124,114 | (58,487,119) | 50,915,490
Investing activities: |  |  |
Decrease (increase) in restricted cash | 23,614,897 | (987,019) | (158,622,411)
Payment to acquire subsidiaries | (6,104,823) |  |
Investment in affiliates | (5,667,627) | (1,503,531) | (4,100,084)
Proceeds from disposal of investment |  | 2,524,541 | 148,898
Purchase of property, plant and equipment | (205,419,189) | (134,314,791) | (72,214,660)
Proceeds from disposal of property, plant and equipment |  | 291,846 | 220,027
Net cash used in investing activities | (193,576,742) | (133,988,954) | (234,568,230)
Financing activities: |  |  |
Proceeds from short-term borrowings | 1,808,463,199 | 917,514,400 | 481,721,660
Repayment of short-term borrowings | (1,721,463,494) | (695,513,690) | (371,676,212)
Proceeds from long-term borrowings | 89,023,852 | 89,659,607 | 14,633,000
Sales of subsidiary shares to non-controlling interest |  | 145,128 | 9,173
Capital contribution from non-controlling interest | 467,720 |  |
Proceeds from issuance of common shares |  |  | 103,349,924
Issuance costs paid for common shares offering |  |  | (538,581)
Proceeds from exercise of stock options | 1,256,948 | 823,560 | 674,424
Net cash provided by financing activities | 177,748,225 | 312,629,005 | 228,173,388
Effect of exchange rate changes | 11,047,381 | 8,387,882 | (70,682)
Net increase in cash and cash equivalents | 55,342,978 | 128,540,814 | 44,449,966
Cash and cash equivalents at the beginning of the year | 288,651,701 | 160,110,887 | 115,660,921
Cash and cash equivalents at the end of the year | 343,994,679 | 288,651,701 | 160,110,887
Supplemental disclosure of cash flow information: |  |  |
Interest paid, net of amounts capitalized | 46,345,299 | 21,211,228 | 10,729,375
Income taxes paid | 30,929,617 | 13,635,216 | 4,367,772
Supplemental schedule of non-cash activities: |  |  |
Amounts due from disposal of subsidiaries or affiliates included in prepaid expenses and other current assets | 714,182 |  | 2,345,557
Property, plant and equipment cost included in other payables | $ 36,495,522 | $ 22,199,024 | $ 18,943,086

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