<SEC-DOCUMENT>0001537435-14-000083-index.html : 20141028
<SEC-HEADER>0001537435-14-000083.hdr.sgml : 20141028
<ACCEPTANCE-DATETIME>20141028154502
ACCESSION NUMBER:		0001537435-14-000083
CONFORMED SUBMISSION TYPE:	S-3
PUBLIC DOCUMENT COUNT:		4
FILED AS OF DATE:		20141028
DATE AS OF CHANGE:		20141028

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			TECOGEN INC.
		CENTRAL INDEX KEY:			0001537435
		STANDARD INDUSTRIAL CLASSIFICATION:	AIR COND & WARM AIR HEATING EQUIP & COMM & INDL REFRIG EQUIP [3585]
		IRS NUMBER:				043536131
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		S-3
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-199634
		FILM NUMBER:		141177051

	BUSINESS ADDRESS:	
		STREET 1:		45 FIRST AVENUE
		CITY:			WALTHAM
		STATE:			MA
		ZIP:			02451
		BUSINESS PHONE:		781-466-6400

	MAIL ADDRESS:	
		STREET 1:		45 FIRST AVENUE
		CITY:			WALTHAM
		STATE:			MA
		ZIP:			02451

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	TECOGEN INC
		DATE OF NAME CHANGE:	20111215
</SEC-HEADER>
<DOCUMENT>
<TYPE>S-3
<SEQUENCE>1
<FILENAME>tgen-20141028sx3.htm
<DESCRIPTION>S-3
<TEXT>
Document 1 - file: tgen-20141028sx3.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-5.1
<SEQUENCE>2
<FILENAME>tgen-20141028sx3ex51.htm
<DESCRIPTION>EX - LEGAL OPINION
<TEXT>
Document 2 - file: tgen-20141028sx3ex51.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.1
<SEQUENCE>3
<FILENAME>tgen-20141028sx3ex231.htm
<DESCRIPTION>EX - CONSENT OF MCGLADREY
<TEXT>
Document 3 - file: tgen-20141028sx3ex231.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>logoa01.jpg
<DESCRIPTION>LOGO
<TEXT>
Document 4 - file: logoa01.jpg

</DOCUMENT>
</SEC-DOCUMENT>