Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information Document and Entity Information

v3.2.0.727
Document and Entity Information Document and Entity Information - Jun. 30, 2015 - shares
Total
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 Jun. 30, 2015
Document Fiscal Year Focus 2015
Document Fiscal Period Focus Q2
Amendment Flag false
Entity Common Stock, Shares Outstanding 16,338,782