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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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<SEC-DOCUMENT>0001450565-09-000001.txt : 20090126
<SEC-HEADER>0001450565-09-000001.hdr.sgml : 20090126
<ACCEPTANCE-DATETIME>20090126162536
ACCESSION NUMBER:		0001450565-09-000001
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20081231
FILED AS OF DATE:		20090126
DATE AS OF CHANGE:		20090126

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Green St. Energy, Inc.
		CENTRAL INDEX KEY:			0000883842
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRONIC COMPONENTS, NEC [3679]
		IRS NUMBER:				363809819
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		123 GREEN ST
		CITY:			TEHACHAPI
		STATE:			CA
		ZIP:			93561
		BUSINESS PHONE:		310-556-9688

	MAIL ADDRESS:	
		STREET 1:		123 GREEN ST
		CITY:			TEHACHAPI
		STATE:			CA
		ZIP:			93561

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	M WAVE INC
		DATE OF NAME CHANGE:	19930328

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Cataldo Tony
		CENTRAL INDEX KEY:			0001450565

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-19944
		FILM NUMBER:		09545750

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		630-562-5550

	MAIL ADDRESS:	
		STREET 1:		C/O 475 INDUSTRIAL BLVD
		CITY:			WEST CHICAGO
		STATE:			IL
		ZIP:			60106
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2008-12-31</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000883842</issuerCik>
        <issuerName>Green St. Energy, Inc.</issuerName>
        <issuerTradingSymbol>mwav</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001450565</rptOwnerCik>
            <rptOwnerName>Cataldo Tony</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O GREEN ST. ENERGY, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>123 GREEN ST</rptOwnerStreet2>
            <rptOwnerCity>TEHACHAPI</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>93561</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chairman and CEO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Stock Option</value>
                <footnoteId id="F1"/>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>0.05</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2008-12-31</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>511719</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.05</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2009-12-31</value>
            </exerciseDate>
            <expirationDate>
                <value>2012-12-31</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>511719</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>511719</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">By agreement with the Company, the Reporting Person is entitled to receive additional Common Stock grants from time to time during the calendar year 2009 to assure Reporting Person has the right to maintain beneficial ownership of the Company's Common Stock in the equivalent of a minimum of 10% (ten percent) of the fully diluted (issued, options, and warrants) shares of Common Stock.  The Company will issue any additional shares to the Reporting Person pursuant to said agreement provision within ten (10) days of the end of a fiscal quarter.  As of December 31, 2008, the Company had 5,117,185 fully diluted shares.  Grants will be subject to shareholder approval at the next annual meeting.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Tony Cataldo</signatureName>
        <signatureDate>2009-01-26</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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