Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information Document and Entity Information

v2.4.0.8
Document and Entity Information Document and Entity Information
9 Months Ended
Sep. 30, 2013
Document and Entity Information [Abstract]  
Entity Registrant Name TECOGEN INC.
Entity Central Index Key 0001537435
Current Fiscal Year End Date --12-31
Entity Filer Category Smaller Reporting Company
Document Type 10-Q
Document Period End Date Sep. 30, 2013
Document Fiscal Year Focus 2013
Document Fiscal Period Focus Q3
Amendment Flag false
Entity Common Stock, Shares Outstanding 13,574,474