Quarterly report pursuant to Section 13 or 15(d)

Consolidated Statements of Stockholders' Equity

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Consolidated Statements of Stockholders' Equity (USD $)
Total
Common Stock 0.001 Par Value
Additional Paid-in Capital
Accumulated Deficit
Noncontrolling Interest
Balance, beginning balance at Dec. 31, 2012 $ 4,783,035 $ 54,448 $ 16,319,985 $ (11,759,723) $ 168,325
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Stock based compensation expense 57,638   53,105   4,533
Loss available to stockholders (860,393)     (860,393)  
Net loss attributable to Tecogen Inc. (978,540)       (118,147)
Balance, ending balance at Mar. 31, 2013 $ 3,862,133 $ 54,448 $ 16,373,090 $ (12,620,116) $ 54,711