<SUBMISSION>
<ACCESSION-NUMBER>0000032878-08-000105
<TYPE>4
<PUBLIC-DOCUMENT-COUNT>2
<PERIOD>20080930
<FILING-DATE>20081006
<DATE-OF-FILING-DATE-CHANGE>20081006
<ISSUER>
<COMPANY-DATA>
<CONFORMED-NAME>ENERGY CONVERSION DEVICES INC
<CIK>0000032878
<ASSIGNED-SIC>3674
<IRS-NUMBER>381749884
<STATE-OF-INCORPORATION>DE
<FISCAL-YEAR-END>0630
</COMPANY-DATA>
<BUSINESS-ADDRESS>
<STREET1>2956 WATERVIEW DRIVE
<CITY>ROCHESTER HILLS
<STATE>MI
<ZIP>48309
<PHONE>248-293-0440
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>2956 WATERVIEW DRIVE
<CITY>ROCHESTER HILLS
<STATE>MI
<ZIP>48309
</MAIL-ADDRESS>
<FORMER-COMPANY>
<FORMER-CONFORMED-NAME>ENERGY CONVERSION LABORATORIES INC
<DATE-CHANGED>19710603
</FORMER-COMPANY>
</ISSUER>
<REPORTING-OWNER>
<OWNER-DATA>
<CONFORMED-NAME>Knoll Jay B
<CIK>0001365208
</OWNER-DATA>
<FILING-VALUES>
<FORM-TYPE>4
<ACT>34
<FILE-NUMBER>001-08403
<FILM-NUMBER>081111058
</FILING-VALUES>
<BUSINESS-ADDRESS>
<PHONE>248-293-0440
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>2956 WATERVIEW DRIVE
<CITY>ROCHESTER HILLS
<STATE>MI
<ZIP>48309
</MAIL-ADDRESS>
</REPORTING-OWNER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgardoc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2008-09-30</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000032878</issuerCik>
        <issuerName>ENERGY CONVERSION DEVICES INC</issuerName>
        <issuerTradingSymbol>ENER</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001365208</rptOwnerCik>
            <rptOwnerName>Knoll Jay B</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>2956 WATERVIEW DRIVE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>ROCHESTER HILLS</rptOwnerCity>
            <rptOwnerState>MI</rptOwnerState>
            <rptOwnerZipCode>48309</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Vice President/General Counsel</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2008-09-30</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>3060</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>15530</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2008-09-30</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F2"/>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>6130</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>21660</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>200</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>by Managed Account</value>
                    <footnoteId id="F3"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Consists of restricted stock units granted under the Company's 2006 Stock Incentive Plan.  These restricted stock units settle on a one-for-one basis in shares of Company common stock and vest on June 30, 2010, subject to achivement of performance goals.</footnote>
        <footnote id="F2">Consists of restricted stock units granted under the Company's 2006 Stock Incentive Plan.  These restricted stock units settle on a one-for-one basis in shares of Company common stock and vest on June 30, 2012, subject to achivement of performance goals.</footnote>
        <footnote id="F3">Shares are held in self-directed IRA.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>By: Ghazaleh Koefod  For: Jay B. Knoll</signatureName>
        <signatureDate>2008-10-06</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>powerofattorney-knoll.txt
<DESCRIPTION>EDGAR SUPPORTING DOCUMENT
<TEXT>
                                POWER OF ATTORNEY


         KNOW ALL MEN BY THESE PRESENTS, that Jay Knoll whose signature
appears below constitutes and appoints Ghazaleh Koefod, as his or her
lawful attorney-in-fact and agent, with full power of substitution and
resubstitution, for him or her and in his or her name, place and stead,
in any and all capacities, to sign any Form 3, Forms 4 and Forms 5 and
all amendments thereto and to file the same and other documents
in connection therewith, with the Securities and Exchange Commission, granting
unto such attorney-in-fact and agent full power and authority to do and perform
each and every act and thing requisite and necessary to be done in connection
therewith, as fully to all intents and purposes as she might or could do in
person, hereby ratifying and confirming all that such attorney-in-fact and
agent, or her substitute or substitutes, may lawfully do or cause to be
done by virtue hereof.



Date: June 6, 2006                       By: /s/ Jay Knoll
      ---------------------------        -----------------------------
                                                Signature


</TEXT>
</DOCUMENT>
</SUBMISSION>
