<SEC-DOCUMENT>0001144204-11-056616.txt : 20111006
<SEC-HEADER>0001144204-11-056616.hdr.sgml : 20111006
<ACCEPTANCE-DATETIME>20111005174109
ACCESSION NUMBER:		0001144204-11-056616
CONFORMED SUBMISSION TYPE:	424B3
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20111006
DATE AS OF CHANGE:		20111005

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ACORN ENERGY, INC.
		CENTRAL INDEX KEY:			0000880984
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-ENGINEERING SERVICES [8711]
		IRS NUMBER:				222786081
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		424B3
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-143421
		FILM NUMBER:		111127714

	BUSINESS ADDRESS:	
		STREET 1:		4 WEST ROCKLAND ROAD
		CITY:			MONTCHANIN
		STATE:			DE
		ZIP:			19710
		BUSINESS PHONE:		3026561708

	MAIL ADDRESS:	
		STREET 1:		4 WEST ROCKLAND ROAD
		CITY:			MONTCHANIN
		STATE:			DE
		ZIP:			19710

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ACORN FACTOR, INC.
		DATE OF NAME CHANGE:	20060920

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	DATA SYSTEMS & SOFTWARE INC
		DATE OF NAME CHANGE:	19931019

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	DEFENSE SOFTWARE & SYSTEMS INC
		DATE OF NAME CHANGE:	19930328
</SEC-HEADER>
<DOCUMENT>
<TYPE>424B3
<SEQUENCE>1
<FILENAME>v236634_424b3.htm
<DESCRIPTION>424B3
<TEXT>
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    <title>Unassociated Document</title>
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<div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="right"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Filed pursuant to Rule 424(b)(3)</font></div>

<div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="right"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Registration No. 333-143421</font></div>

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<div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Prospectus Supplement No. 2 dated October 5, 2011</font></div>

<div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">To the Prospectus of Acorn Energy, Inc. dated April 7, 2009</font></div>

<div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">(included in Registration Statement on Form S-3, Registration No. 333-143421)</font></div>

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<div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><font id="TAB1" style="MARGIN-LEFT: 36pt"></font>The Prospectus under the caption &#8220;Selling Security Holders&#8221; indicates that Gerald Brauser is a selling security holder with respect to 32,895 shares of common stock of the company issuable upon the exercise of warrants.&#160;&#160;Mr. Brauser has transferred all of such warrants to Eva Balcer.&#160;&#160;As a result of the transfer, Eva Balcer will be a selling security holder under the Prospectus with respect to 32,895 shares of common stock of the company issuable upon exercise of warrants, and Gerald Brauser will cease to be listed as a selling security holder under the Prospectus.</font></div>

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