<SEC-DOCUMENT>0001753926-21-000470-index.html : 20210927
<SEC-HEADER>0001753926-21-000470.hdr.sgml : 20210927
<ACCEPTANCE-DATETIME>20210924205519
ACCESSION NUMBER:		0001753926-21-000470
CONFORMED SUBMISSION TYPE:	PRER14A
PUBLIC DOCUMENT COUNT:		4
FILED AS OF DATE:		20210927
DATE AS OF CHANGE:		20210924

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MECHANICAL TECHNOLOGY INC
		CENTRAL INDEX KEY:			0000064463
		STANDARD INDUSTRIAL CLASSIFICATION:	MEASURING & CONTROLLING DEVICES, NEC [3829]
		IRS NUMBER:				141462255
		STATE OF INCORPORATION:			NV
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		PRER14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-40261
		FILM NUMBER:		211278765

	BUSINESS ADDRESS:	
		STREET 1:		325 WASHINGTON AVENUE EXTENSION
		CITY:			ALBANY
		STATE:			NY
		ZIP:			12205
		BUSINESS PHONE:		518-218-2500

	MAIL ADDRESS:	
		STREET 1:		325 WASHINGTON AVENUE EXTENSION
		CITY:			ALBANY
		STATE:			NY
		ZIP:			12205
</SEC-HEADER>
<DOCUMENT>
<TYPE>PRER14A
<SEQUENCE>1
<FILENAME>g082350_prer14a.htm
<DESCRIPTION>PRER14A
<TEXT>
Document 1 - file: g082350_prer14a.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>g082350_img1.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: g082350_img1.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>g082350_img2.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: g082350_img2.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>g082350_img3.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: g082350_img3.jpg

</DOCUMENT>
</SEC-DOCUMENT>