Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information Document and Entity Information

v3.4.0.3
Document and Entity Information Document and Entity Information
3 Months Ended
Mar. 31, 2016
shares
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 Mar. 31, 2016
Document Fiscal Year Focus 2016
Document Fiscal Period Focus Q1
Amendment Flag false
Entity Common Stock, Shares Outstanding 18,478,990