<SEC-DOCUMENT>0001003297-21-000047-index.html : 20210430
<SEC-HEADER>0001003297-21-000047.hdr.sgml : 20210430
<ACCEPTANCE-DATETIME>20210430122443
ACCESSION NUMBER:		0001003297-21-000047
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		4
CONFORMED PERIOD OF REPORT:	20210428
ITEM INFORMATION:		Changes in Registrant's Certifying Accountant
ITEM INFORMATION:		Financial Statements and Exhibits
FILED AS OF DATE:		20210430
DATE AS OF CHANGE:		20210430

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:			NY
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		8-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-40261
		FILM NUMBER:		21875494

	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>8-K
<SEQUENCE>1
<FILENAME>mti8k043021.htm
<TEXT>
Document 1 - file: mti8k043021.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-16
<SEQUENCE>2
<FILENAME>ex16-1.htm
<TEXT>
Document 2 - file: ex16-1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>ex16-1x1x1.jpg
<TEXT>
Document 3 - file: ex16-1x1x1.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>ex16-1x1x2.jpg
<TEXT>
Document 4 - file: ex16-1x1x2.jpg

</DOCUMENT>
</SEC-DOCUMENT>