-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 DLcVNr6KwBQGZI95PoA6Urjfi2XGdlDqYvImBJQIHkhEEiy+Ykaj8zBD6DfEV73Y
 qYtk2Tm+yJSvKHvWPf+r+A==

<SEC-DOCUMENT>0001425553-10-000001.txt : 20100908
<SEC-HEADER>0001425553-10-000001.hdr.sgml : 20100908
<ACCEPTANCE-DATETIME>20100907194239
ACCESSION NUMBER:		0001425553-10-000001
CONFORMED SUBMISSION TYPE:	D/A
PUBLIC DOCUMENT COUNT:		1
ITEM INFORMATION:		Rule 506
FILED AS OF DATE:		20100908
DATE AS OF CHANGE:		20100907
EFFECTIVENESS DATE:		20100908

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			WINDENSITY INC
		CENTRAL INDEX KEY:			0001425553
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE

	FILING VALUES:
		FORM TYPE:		D/A
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	021-114113
		FILM NUMBER:		101060934

	BUSINESS ADDRESS:	
		STREET 1:		181 BLUE RAVINE ROAD
		CITY:			FOLSOM
		STATE:			CA
		ZIP:			95630
		BUSINESS PHONE:		916-412-3463

	MAIL ADDRESS:	
		STREET 1:		181 BLUE RAVINE ROAD
		CITY:			FOLSOM
		STATE:			CA
		ZIP:			95630

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MARQUISS WIND POWER INC
		DATE OF NAME CHANGE:	20080130
</SEC-HEADER>
<DOCUMENT>
<TYPE>D/A
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<edgarSubmission>

    <schemaVersion>X0704</schemaVersion>

    <submissionType>D/A</submissionType>

    <testOrLive>LIVE</testOrLive>

    <primaryIssuer>
        <cik>0001425553</cik>
        <entityName>WINDENSITY INC</entityName>
        <issuerAddress>
            <street1>1880 FLIGHTLINE DRIVE</street1>
            <street2>UNIT #1</street2>
            <city>LINCOLN</city>
            <stateOrCountry>CA</stateOrCountry>
            <stateOrCountryDescription>CALIFORNIA</stateOrCountryDescription>
            <zipCode>95648</zipCode>
        </issuerAddress>
        <issuerPhoneNumber>916-412-3463</issuerPhoneNumber>
        <jurisdictionOfInc>DELAWARE</jurisdictionOfInc>
        <edgarPreviousNameList>
            <previousName>MARQUISS WIND POWER INC</previousName>
        </edgarPreviousNameList>
        <entityType>Corporation</entityType>
        <yearOfInc>
            <withinFiveYears>true</withinFiveYears>
            <value>2006</value>
        </yearOfInc>
    </primaryIssuer>

    <relatedPersonsList>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>FARID</firstName>
                <lastName>DIBACHI</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>1880 FLIGHTLINE DRIVE</street1>
                <street2>UNIT #1</street2>
                <city>LINCOLN</city>
                <stateOrCountry>CA</stateOrCountry>
                <stateOrCountryDescription>CALIFORNIA</stateOrCountryDescription>
                <zipCode>95648</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>JACK</firstName>
                <lastName>CRAWFORD, JR.</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>1880 FLIGHTLINE DRIVE</street1>
                <street2>UNIT #1</street2>
                <city>LINCOLN</city>
                <stateOrCountry>CA</stateOrCountry>
                <stateOrCountryDescription>CALIFORNIA</stateOrCountryDescription>
                <zipCode>95648</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>KRAIG</firstName>
                <lastName>CLARK</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>1880 FLIGHTLINE DRIVE</street1>
                <street2>UNIT #1</street2>
                <city>LINCOLN</city>
                <stateOrCountry>CA</stateOrCountry>
                <stateOrCountryDescription>CALIFORNIA</stateOrCountryDescription>
                <zipCode>95648</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
    </relatedPersonsList>

    <offeringData>
        <industryGroup>
            <industryGroupType>Other Energy</industryGroupType>
        </industryGroup>
        <issuerSize>
            <revenueRange>Decline to Disclose</revenueRange>
        </issuerSize>
        <federalExemptionsExclusions>
            <item>06</item>
        </federalExemptionsExclusions>
        <typeOfFiling>
            <newOrAmendment>
                <isAmendment>true</isAmendment>
                <previousAccessionNumber>0001425553-09-000006</previousAccessionNumber>
            </newOrAmendment>
            <dateOfFirstSale>
                <value>2009-07-31</value>
            </dateOfFirstSale>
        </typeOfFiling>
        <durationOfOffering>
            <moreThanOneYear>false</moreThanOneYear>
        </durationOfOffering>
        <typesOfSecuritiesOffered>
            <isEquityType>true</isEquityType>
        </typesOfSecuritiesOffered>
        <businessCombinationTransaction>
            <isBusinessCombinationTransaction>false</isBusinessCombinationTransaction>
            <clarificationOfResponse></clarificationOfResponse>
        </businessCombinationTransaction>
        <minimumInvestmentAccepted>0</minimumInvestmentAccepted>
        <salesCompensationList></salesCompensationList>
        <offeringSalesAmounts>
            <totalOfferingAmount>1253634</totalOfferingAmount>
            <totalAmountSold>1253634</totalAmountSold>
            <totalRemaining>0</totalRemaining>
            <clarificationOfResponse>BALANCE OF SERIES A PRIME PREFERRED STOCK OFFERING.</clarificationOfResponse>
        </offeringSalesAmounts>
        <investors>
            <hasNonAccreditedInvestors>false</hasNonAccreditedInvestors>
            <totalNumberAlreadyInvested>2</totalNumberAlreadyInvested>
        </investors>
        <salesCommissionsFindersFees>
            <salesCommissions>
                <dollarAmount>0</dollarAmount>
            </salesCommissions>
            <findersFees>
                <dollarAmount>0</dollarAmount>
            </findersFees>
            <clarificationOfResponse></clarificationOfResponse>
        </salesCommissionsFindersFees>
        <useOfProceeds>
            <grossProceedsUsed>
                <dollarAmount>0</dollarAmount>
            </grossProceedsUsed>
            <clarificationOfResponse></clarificationOfResponse>
        </useOfProceeds>
        <signatureBlock>
            <authorizedRepresentative>false</authorizedRepresentative>
            <signature>
                <issuerName>WINDENSITY INC</issuerName>
                <signatureName>FARID DIBACHI</signatureName>
                <nameOfSigner>FARID DIBACHI</nameOfSigner>
                <signatureTitle>CHIEF EXECUTIVE OFFICER</signatureTitle>
                <signatureDate>2010-09-07</signatureDate>
            </signature>
        </signatureBlock>
    </offeringData>
</edgarSubmission>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----