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INTANGIBLE ASSETS, NET
 12 Months Ended
Dec. 31, 2011
INTANGIBLE ASSETS, NET  
INTANGIBLE ASSETS, NET

7. INTANGIBLE ASSETS, NET

        The following summarizes the Company's intangible assets:

As of December 31, 2011
  Gross
Carrying
Amount 		  Accumulated
Amortization 		  Net  
 
   $
   $
   $
  

Acquired power purchase agreements

     4,111,199     (142,969 )   3,968,230  

Technical know-how

     1,023,354     (213,199 )   810,155  

Computer software

     4,982,833     (1,244,984 )   3,737,849  
               

Total intangible assets, net

     10,117,386     (1,601,152 )   8,516,234  
               


 

As of December 31, 2010
  Gross
Carrying
Amount 		  Accumulated
Amortization 		  Net  
 
   $
   $
   $
  

Technical know-how

     973,630     (105,477 )   868,153  

Computer software

     2,288,011     (460,852 )   1,827,159  
               

Total intangible assets, net

     3,261,641     (566,329 )   2,695,312  
               

        Amortization expense for the years ended December 31, 2009, 2010 and 2011 were $117,521, $320,146 and $1,012,624, respectively.

        Amortization expenses of the above intangible assets is expected to be approximately $1.1 million, $1.0 million, $1.0 million, $1.0 million and $0.7 million for the years ended December 31, 2012, 2013, 2014, 2015 and 2016, respectively.