XML 26 R57.htm IDEA: XBRL DOCUMENT v2.4.0.6
SUMMARY OF PRINCIPAL ACCOUNTING POLICIES (Details 5) (USD $)
 0 Months Ended 1 Months Ended 12 Months Ended
Aug. 01, 2011
Jun. 30, 2009
May 31, 2009
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Warranty cost            
Guarantee of solar modules and products for defects in materials and workmanship       5 years    
Minimum percentage of decline in initial minimum power generation capacity for 10 years     10.00%      
Minimum percentage of decline in initial minimum power generation capacity for 25 years     20.00%      
Extended warranty of solar modules and products for defects in materials and workmanship 10 years 6 years        
Period for which the entity guarantees for maintaining the performance levels 25 years          
Warranty accrual rate for sales of solar modules as a percentage of revenue       1.00%    
Warranty accrual rate for sales of solar system kits as a percentage of revenue       0.80%    
Warranty costs included in cost of revenues       $ 12,516,349 $ 18,347,272 $ 14,259,880
Term of insurance policy over which the insurance premium will be amortized       1 year    
Unamortized carrying amount of insurance premium       3,061,879 14,719,807  
Insurance receivable       35,441,672    
Foreign currency risk            
Cash and cash equivalents and restricted cash denominated in RMB, USD equivalent       $ 491,288,121 $ 363,647,327 $ 296,612,028
Maximum
            
Warranty cost            
Guarantee of solar modules and products for defects in materials and workmanship     2 years      
Warranty period of solar modules and products against decline of more than 10% of initial power generation capacity     10 years      
Warranty period of solar modules and products against decline of more than 20% of initial power generation capacity     25 years      
First year of guaranteed performance period | Minimum
            
Warranty cost            
Actual power output of module as a percentage of labeled power output       97.00%    
Year 2 to year 24 of guaranteed performance period | Maximum
            
Warranty cost            
Percentage of decline in actual annual power output of module       0.70%    
Year 25 of guaranteed performance period | Minimum
            
Warranty cost            
Actual power output of module as a percentage of labeled power output       80.00%