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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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<SEC-DOCUMENT>0001104659-10-057271.txt : 20101109
<SEC-HEADER>0001104659-10-057271.hdr.sgml : 20101109
<ACCEPTANCE-DATETIME>20101109161223
ACCESSION NUMBER:		0001104659-10-057271
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20101105
FILED AS OF DATE:		20101109
DATE AS OF CHANGE:		20101109

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			OCM/GFI POWER OPPORTUNITIES FUND II CAYMAN LP
		CENTRAL INDEX KEY:			0001311238

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34133
		FILM NUMBER:		101176383

	BUSINESS ADDRESS:	
		STREET 1:		C/O OAKTREE CAPITAL MGMT LLC
		STREET 2:		333 SOUTH GRAND AVE 28TH FL
		CITY:			LOS ANGELES
		STATE:			CA
		ZIP:			90071

	MAIL ADDRESS:	
		STREET 1:		C/O OAKTREE CAPITAL MGMT LLC
		STREET 2:		333 SOUTH GRAND AVE 28TH FL
		CITY:			LOS ANGELES
		STATE:			CA
		ZIP:			90071

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			GT Solar International, Inc.
		CENTRAL INDEX KEY:			0001394954
		STANDARD INDUSTRIAL CLASSIFICATION:	SEMICONDUCTORS & RELATED DEVICES [3674]
		IRS NUMBER:				030606749
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0331

	BUSINESS ADDRESS:	
		STREET 1:		243 DANIEL WEBSTER HIGHWAY
		CITY:			MERRIMACK
		STATE:			NH
		ZIP:			03054
		BUSINESS PHONE:		(603)883-5200

	MAIL ADDRESS:	
		STREET 1:		243 DANIEL WEBSTER HIGHWAY
		CITY:			MERRIMACK
		STATE:			NH
		ZIP:			03054

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			G3W VENTURES LLC
		CENTRAL INDEX KEY:			0001289458
		STATE OF INCORPORATION:			DE

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34133
		FILM NUMBER:		101176379

	BUSINESS ADDRESS:	
		STREET 1:		11611 SAN VICENTE BLVD., SUITE 710
		CITY:			LOS ANGELES
		STATE:			CA
		ZIP:			90049
		BUSINESS PHONE:		(310) 442-0542

	MAIL ADDRESS:	
		STREET 1:		11611 SAN VICENTE BLVD., SUITE 710
		CITY:			LOS ANGELES
		STATE:			CA
		ZIP:			90049

	FORMER NAME:	
		FORMER CONFORMED NAME:	GFI Energy Ventures, LLC
		DATE OF NAME CHANGE:	20040505

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			OCM/GFI POWER OPPORTUNITIES FUND II LP
		CENTRAL INDEX KEY:			0001311239

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34133
		FILM NUMBER:		101176384

	BUSINESS ADDRESS:	
		STREET 1:		C/O OAKTREE CAPITAL MGMT LLC
		STREET 2:		333 SOUTH GRAND AVE 28TH FL
		CITY:			LOS ANGELES
		STATE:			CA
		ZIP:			90071
		BUSINESS PHONE:		2138306300

	MAIL ADDRESS:	
		STREET 1:		C/O OAKTREE CAPITAL MGMT LLC
		STREET 2:		333 SOUTH GRAND AVE 28TH FL
		CITY:			LOS ANGELES
		STATE:			CA
		ZIP:			90071

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			GT SOLAR HOLDINGS, LLC
		CENTRAL INDEX KEY:			0001440205
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34133
		FILM NUMBER:		101176385

	BUSINESS ADDRESS:	
		STREET 1:		11611 SAN VICENTE BOULEVARD, SUITE 710
		CITY:			LOS ANGELES
		STATE:			CA
		ZIP:			90049
		BUSINESS PHONE:		310-442-0542

	MAIL ADDRESS:	
		STREET 1:		11611 SAN VICENTE BOULEVARD, SUITE 710
		CITY:			LOS ANGELES
		STATE:			CA
		ZIP:			90049

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			GFI POWER OPPORTUNITIES FUND II GP, LLC
		CENTRAL INDEX KEY:			0001440206
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34133
		FILM NUMBER:		101176382

	BUSINESS ADDRESS:	
		STREET 1:		11611 SAN VICENTE BOULEVARD, SUITE 710
		CITY:			LOS ANGELES
		STATE:			CA
		ZIP:			90049
		BUSINESS PHONE:		310-442-0542

	MAIL ADDRESS:	
		STREET 1:		11611 SAN VICENTE BOULEVARD, SUITE 710
		CITY:			LOS ANGELES
		STATE:			CA
		ZIP:			90049

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			GFI POWER OPPORTUNITIES FUND II GP (CAYMAN) LTD.
		CENTRAL INDEX KEY:			0001440233
		STATE OF INCORPORATION:			E9
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34133
		FILM NUMBER:		101176381

	BUSINESS ADDRESS:	
		STREET 1:		11611 SAN VICENTE BOULEVARD, SUITE 710
		CITY:			LOS ANGELES
		STATE:			CA
		ZIP:			90049
		BUSINESS PHONE:		310-442-0542

	MAIL ADDRESS:	
		STREET 1:		11611 SAN VICENTE BOULEVARD, SUITE 710
		CITY:			LOS ANGELES
		STATE:			CA
		ZIP:			90049
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    <periodOfReport>2010-11-05</periodOfReport>

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    <issuer>
        <issuerCik>0001394954</issuerCik>
        <issuerName>GT Solar International, Inc.</issuerName>
        <issuerTradingSymbol>SOLR</issuerTradingSymbol>
    </issuer>

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        <reportingOwnerId>
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            <rptOwnerName>GT SOLAR HOLDINGS, LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O G3W VENTURES LLC</rptOwnerStreet1>
            <rptOwnerStreet2>11611 SAN VICENTE BOULEVARD, SUITE 710</rptOwnerStreet2>
            <rptOwnerCity>LOS ANGELES</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>90049</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
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    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001311239</rptOwnerCik>
            <rptOwnerName>OCM/GFI POWER OPPORTUNITIES FUND II LP</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O G3W VENTURES LLC</rptOwnerStreet1>
            <rptOwnerStreet2>11611 SAN VICENTE BOULEVARD, SUITE 710</rptOwnerStreet2>
            <rptOwnerCity>LOS ANGELES</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>90049</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
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    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001311238</rptOwnerCik>
            <rptOwnerName>OCM/GFI POWER OPPORTUNITIES FUND II CAYMAN LP</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O G3W VENTURES LLC</rptOwnerStreet1>
            <rptOwnerStreet2>11611 SAN VICENTE BOULEVARD, SUITE 710</rptOwnerStreet2>
            <rptOwnerCity>LOS ANGELES</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>90049</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
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            <isOther>0</isOther>
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    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001440206</rptOwnerCik>
            <rptOwnerName>GFI POWER OPPORTUNITIES FUND II GP, LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O G3W VENTURES LLC</rptOwnerStreet1>
            <rptOwnerStreet2>11611 SAN VICENTE BOULEVARD, SUITE 710</rptOwnerStreet2>
            <rptOwnerCity>LOS ANGELES</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>90049</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
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    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001440233</rptOwnerCik>
            <rptOwnerName>GFI POWER OPPORTUNITIES FUND II GP (CAYMAN) LTD.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O G3W VENTURES LLC</rptOwnerStreet1>
            <rptOwnerStreet2>11611 SAN VICENTE BOULEVARD, SUITE 710</rptOwnerStreet2>
            <rptOwnerCity>LOS ANGELES</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>90049</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
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            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001289458</rptOwnerCik>
            <rptOwnerName>G3W VENTURES LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O G3W VENTURES LLC</rptOwnerStreet1>
            <rptOwnerStreet2>11611 SAN VICENTE BOULEVARD, SUITE 710</rptOwnerStreet2>
            <rptOwnerCity>LOS ANGELES</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>90049</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
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        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2010-11-05</value>
            </transactionDate>
            <deemedExecutionDate>
                <value>2010-11-05</value>
            </deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>26500000</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>7.6606</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>24638149</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By GT Solar Holdings, LLC</value>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2010-11-08</value>
            </transactionDate>
            <deemedExecutionDate>
                <value>2010-11-08</value>
            </deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>7000000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>8.60</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>17638149</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By GT Solar Holdings, LLC</value>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>9231</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Represents 26.5 million shares repurchased by GT Solar International, Inc. from GT Solar Holdings, LLC, pursuant to a stock repurchase agreement dated November 5, 2010.</footnote>
        <footnote id="F2">These shares are owned directly by GT Solar Holdings, LLC.  OCM/GFI Power Opportunities Fund II, L.P., or the &quot;Main Fund,&quot; and OCM/GFI Power Opportunities Fund II (Cayman), L.P. (&quot;Cayman Fund&quot; and together with the Main Fund, &quot;OCM/GFI Funds&quot;) are together the managing member of GT Solar Holdings, LLC.  G3W Ventures LLC, or &quot;G3W,&quot; is one of the two investment managers of each of the OCM/GFI Funds.  Voting and investment power with respect to securities owned by the OCM/GFI Funds is exercised by a four-person committee, composed of two representatives of G3W (any of Messrs. Lawrence D. Gilson, Richard K. Landers and Ian A. Schapiro).</footnote>
        <footnote id="F3">GFI Power Opportunities Fund II, GP, LLC is the general partner of the Main Fund.  GFI Power Opportunities Fund II GP (Cayman) Ltd. is the general partner of the Cayman Fund.  G3W is the managing member of GFI Power Opportunities Fund II GP, LLC.  By virtue of the ownership structure described above, each of the OCM/GFI Funds, G3W, GFI Power Opportunities Fund II GP, LLC, GFI Power Opportunities Fund II GP (Cayman) Ltd., Lawrence D. Gilson, Richard K. Landers and Ian A. Schapiro (collectively, the &quot;GFI Group&quot;) may be deemed to have beneficial ownership of the shares owned by GT Solar Holdings, LLC. The GFI Group expressly disclaims beneficial ownership of the shares held by GT Solar Holdings, LLC, except to the extent of their respective pecuniary interests therein.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>GT SOLAR HOLDINGS, LLC By: OCM/GFI Power Opportunities Fund II, L.P. Its: Managing Member By: GFI Power Opportunities Fund II GP, LLC Its: General Partner</signatureName>
        <signatureDate>2010-11-09</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>By: G3W Ventures LLC Its: Managing Member By: /s/ Ian Schapiro Name: Ian Schapiro Title: Partner</signatureName>
        <signatureDate>2010-11-09</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>By: OCM/GFI Power Opportunities Fund II (Cayman), L.P. Its: Manag. Mbr. By: GFI Power Opportunities Fund II GP (Cayman) Ltd. Its: G.P.</signatureName>
        <signatureDate>2010-11-09</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>By: GFI Power Opportunities Fund II GP, LLC Its: Dir. By: G3W Ventures LLC Its: Manag. Mbr. By: /s/ Ian Schapiro Name: Ian Schapiro Title: Partner</signatureName>
        <signatureDate>2010-11-09</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>OCM/GFI POWER OPPORTUNITIES FUND II, L.P. By: GFI Power Opportunities Fund II GP, LLC Its: G.P. By: G3W Ventures LLC Its: Managing Mbr. By: /s/ Ian Schapiro Name: Ian Schapiro Title: Partner</signatureName>
        <signatureDate>2010-11-09</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>OCM/GFI POWER OPPORTUNITIES FUND II (CAYMAN), L.P. By: GFI Power Opportunities Fund II GP (Cayman) Ltd. Its: G.P. By: GFI Power Opportunities Fund II GP, LLC Its: Director</signatureName>
        <signatureDate>2010-11-09</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>By: G3W Ventures LLC Its: Managing Mbr. By:/s/ Ian Schapiro Name: Ian Schapiro Title: Partner</signatureName>
        <signatureDate>2010-11-09</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>GFI POWER OPPORTUNITIES FUND II GP, LLC By: G3W Ventures LLC Its: Managing Mbr. By:/s/ Ian Schapiro Name: Ian Schapiro Title: Partner</signatureName>
        <signatureDate>2010-11-09</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>GFI POWER OPPORTUNITIES FUND II GP (CAYMAN) LTD. By: GFI Power Opportunities Fund II GP, LLC Its: Director By: G3W Ventures LLC Its: Managing Mbr. By:/s/ Ian Schapiro Name: Ian Schapiro Title: Partner</signatureName>
        <signatureDate>2010-11-09</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>G3W VENTURES LLC By: /s/ Ian Schapiro Name: Ian Schapiro Title: Partner</signatureName>
        <signatureDate>2010-11-09</signatureDate>
    </ownerSignature>
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