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CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Operating activities: |  |  |
Net income (loss) | $ (195,155,097) | $ (90,903,374) | $ 50,828,396
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities: |  |  |
Depreciation and amortization | 81,398,470 | 56,117,280 | 31,266,181
Loss on disposal of property, plant and equipment | 1,991,098 | 1,223,163 | 194,243
(Gain) loss on change in fair value of derivatives | 4,369,173 | 5,750,981 | (1,656,928)
Investment loss | 1,081,700 |  | 3,000,000
Equity in (loss) earnings of unconsolidated investees | 1,969,306 | 41,163 | (146,597)
Allowance for doubtful debts | 43,611,217 | 23,156,857 | 3,046,100
Write-down of inventories | 3,085,529 | 8,456,260 | 2,101,124
Provision for firm purchase commitment |  | 10,610,410 | 1,562,002
Amortization of discount on debt | 49,699 | 44,485 | 39,816
Share-based compensation | 5,185,242 | 4,060,838 | 3,876,671
Changes in operating assets and liabilities: |  |  |
Inventories | 3,960,749 | (28,798,943) | (103,637,355)
Accounts receivable | (6,983,739) | (103,748,565) | (5,704,039)
Amount due from related parties | 9,904,520 | (18,135,684) | (1,347,828)
Value added tax recoverable | 2,303,949 | 28,508,062 | (1,828,277)
Advances to suppliers | (17,898,461) | 13,458,006 | 2,227,991
Other non-current assets | (24,406,669) | (9,257,048) | (5,826,029)
Accounts receivable, unbilled | 46,425,858 | (51,370,820) |
Project assets | (300,679,763) | (37,133,068) |
Prepaid expenses and other current assets | (70,614,891) | (2,969,210) | (6,424,395)
Accounts payable | 56,238,301 | 52,435,834 | 18,096,208
Short-term notes payable | 99,114,001 | 118,154,508 | (96,011,517)
Other payables | 36,910,195 | 20,699,554 | 10,979,862
Advances from customers | (46,127,125) | 56,706,824 | 5,120,313
Amounts due to related parties | 2,015,133 | 484,649 | 2,163,515
Accrued warranty costs | 11,334,395 | 15,737,987 | 14,259,880
Provision for firm purchase commitment |  | (27,862,017) |
Loss contingency accruals |  | 27,862,017 |
Other current liabilities | 59,188,516 | (744,073) | 18,875,491
Prepaid land use right | (4,760,904) | 229,241 | (454,803)
Liability for uncertain tax positions | 2,502,791 | 840,611 | 755,414
Deferred taxes | 48,851,188 | (4,632,976) | (5,179,877)
Settlement of foreign currency derivatives | (2,623,318) | (8,898,838) | 1,337,319
Net cash provided by (used in) operating activities | (147,758,937) | 60,124,114 | (58,487,119)
Investing activities: |  |  |
Decrease (increase) in restricted cash | (243,137,142) | 23,614,897 | (987,019)
Payment to acquire subsidiaries |  | (6,104,823) |
Investment in affiliates | (3,428,751) | (5,667,627) | (1,503,531)
Proceeds from disposal of investment | 555,475 |  | 2,524,541
Purchase of property, plant and equipment | (60,481,021) | (205,419,189) | (134,314,791)
Proceeds from disposal of property, plant and equipment |  |  | 291,846
Net cash used in investing activities | (306,491,439) | (193,576,742) | (133,988,954)
Financing activities: |  |  |
Proceeds from short-term borrowings | 791,596,176 | 1,808,463,199 | 917,514,400
Repayment of short-term borrowings | (692,071,052) | (1,721,463,494) | (695,513,690)
Proceeds from long-term borrowings | 143,965,319 | 89,023,852 | 89,659,607
Sales of subsidiary shares to non-controlling interest |  |  | 145,128
Capital contribution from non-controlling interest | 4,426,535 | 467,720 |
Payment for repurchase of convertible notes | (1,000,000) |  |
Proceeds from issuance of warrant | 2,500,000 |  |
Proceeds from exercise of stock options | 158,766 | 1,256,948 | 823,560
Net cash provided by financing activities | 249,575,744 | 177,748,225 | 312,629,005
Effect of exchange rate changes | 2,648,135 | 11,047,381 | 8,387,882
Net increase (decrease) in cash and cash equivalents | (202,026,497) | 55,342,978 | 128,540,814
Cash and cash equivalents at the beginning of the year | 343,994,679 | 288,651,701 | 160,110,887
Cash and cash equivalents at the end of the year | 141,968,182 | 343,994,679 | 288,651,701
Supplemental disclosure of cash flow information: |  |  |
Interest paid, net of amounts capitalized | 57,914,890 | 46,345,299 | 21,211,228
Income taxes paid | 9,698,512 | 30,929,617 | 13,635,216
Supplemental schedule of non-cash activities: |  |  |
Amounts due from disposal of subsidiaries or affiliates included in prepaid expenses and other current assets | 715,934 | 714,182 |
Property, plant and equipment cost included in other payables | 16,814,481 | 36,495,522 | 22,199,024
Module contribution in exchange for minority investment in associates | $ 15,874,847 |  |

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