<SEC-DOCUMENT>0001537435-14-000121-index.html : 20141224
<SEC-HEADER>0001537435-14-000121.hdr.sgml : 20141224
<ACCEPTANCE-DATETIME>20141224085145
ACCESSION NUMBER:		0001537435-14-000121
CONFORMED SUBMISSION TYPE:	424B3
PUBLIC DOCUMENT COUNT:		4
FILED AS OF DATE:		20141224
DATE AS OF CHANGE:		20141224

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:		424B3
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-193791
		FILM NUMBER:		141308871

	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>424B3
<SEQUENCE>1
<FILENAME>tgn-20141224424b3sx1x791q3.htm
<DESCRIPTION>424B3
<TEXT>
Document 1 - file: tgn-20141224424b3sx1x791q3.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>10-Q
<SEQUENCE>2
<FILENAME>tgn-20140930x10q.htm
<DESCRIPTION>10-Q
<TEXT>
Document 2 - file: tgn-20140930x10q.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>tecogenlogobga03a02.jpg
<DESCRIPTION>LOGO 1
<TEXT>
Document 3 - file: tecogenlogobga03a02.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>tecogenlogohigh.jpg
<DESCRIPTION>LOGO 2
<TEXT>
Document 4 - file: tecogenlogohigh.jpg

</DOCUMENT>
</SEC-DOCUMENT>