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Cost of revenues and general and administrative expenses
 12 Months Ended
Dec. 31, 2011
Cost of revenues and general and administrative expenses

14. Cost of revenues and general and administrative expenses

 

 

    Year Ended December 31,  
    2011     2010     2009  
Cost of revenues consist of:                  
Electricity   $ 12,622,788     $ 10,132,956     $ 8,743,711  
Depreciation     5,537,098       5,854,297       5,882,387  
Fuel oil     7,195,692       4,928,409       4,953,120  
Employee costs     4,276,682       4,444,814       4,537,824  
Cost of plant sales     61,843       1,833,835       3,850,188  
Maintenance     2,140,776       2,541,927       2,437,164  
Royalties     1,406,160       1,368,181       1,505,080  
Insurance     1,545,771       1,490,121       1,321,727  
Other     1,345,615       1,503,519       1,789,239  
    $ 36,132,425     $ 34,098,059     $ 35,020,440  

 

 

General and administrative expenses consist of:                        
Employee costs   $ 5,265,360     $ 4,219,915     $ 4,526,140  
Insurance     965,003       951,715       952,742  
Professional fees     3,112,678       2,805,146       857,135  
Directors’ fees and expenses     551,132       519,786       692,374  
Depreciation     252,303       340,969       310,529  
Other     3,505,174       2,492,117       2,762,337  
    $ 13,651,650     $ 11,329,648     $ 10,101,257