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    <schemaVersion>X0603</schemaVersion>

    <submissionType>D</submissionType>

    <testOrLive>LIVE</testOrLive>

    <primaryIssuer>
        <cik>0001370910</cik>
        <entityName>SOLOPOWER INC</entityName>
        <issuerAddress>
            <street1>5981 OPTICAL COURT</street1>
            <city>SAN JOSE</city>
            <stateOrCountry>CA</stateOrCountry>
            <zipCode>95138</zipCode>
        </issuerAddress>
        <issuerPhoneNumber>408-942-4140</issuerPhoneNumber>
        <jurisdictionOfInc>DELAWARE</jurisdictionOfInc>
        <issuerPreviousNameList>
            <value>None</value>
        </issuerPreviousNameList>
        <edgarPreviousNameList>
            <value>None</value>
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        <entityType>Corporation</entityType>
        <yearOfInc>
            <withinFiveYears>true</withinFiveYears>
            <value>2005</value>
        </yearOfInc>
    </primaryIssuer>

    <relatedPersonsList>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Alain</firstName>
                <lastName>Harrus</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o Crosslink Capital</street1>
                <street2>Two Embarcadero Center, Suite 2200</street2>
                <city>San Francisco</city>
                <stateOrCountry>CA</stateOrCountry>
                <zipCode>94111</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
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            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Louis</firstName>
                <lastName>DiNardo</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o Crosslink Capital</street1>
                <street2>Two Embarcadero Center, Suite 2200</street2>
                <city>San Francisco</city>
                <stateOrCountry>CA</stateOrCountry>
                <zipCode>94111</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
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            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Jon</firstName>
                <lastName>Vaksvik</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o Convexa AS; Haakon VII's gt, 4th Fl</street1>
                <street2>P.O. Box 1755 Vika</street2>
                <city>Oslo</city>
                <stateOrCountry>Q8</stateOrCountry>
                <zipCode>N-0122</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>John</firstName>
                <lastName>Cavalier</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o Hudson Clean Energy Partners, L.P.</street1>
                <street2>400 Frank W. Burr Blvd., Suite 37</street2>
                <city>Teaneck</city>
                <stateOrCountry>NJ</stateOrCountry>
                <zipCode>07666</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Craig</firstName>
                <lastName>Cornelius</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o Hudson Clean Energy Partners, L.P.</street1>
                <street2>400 Frank W. Burr Blvd., Suite 37</street2>
                <city>Teaneck</city>
                <stateOrCountry>NJ</stateOrCountry>
                <zipCode>07666</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Daniel</firstName>
                <lastName>Gross</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o Hudson Clean Energy Partners, L.P.</street1>
                <street2>400 Frank W. Burr Blvd., Suite 37</street2>
                <city>Teaneck</city>
                <stateOrCountry>NJ</stateOrCountry>
                <zipCode>07666</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
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            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Timothy</firstName>
                <lastName>Harris</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o SoloPower, Inc.</street1>
                <street2>5981 Optical Court</street2>
                <city>San Jose</city>
                <stateOrCountry>CA</stateOrCountry>
                <zipCode>95138</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Albert</firstName>
                <middleName>J</middleName>
                <lastName>Boro</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o SoloPower, Inc.</street1>
                <street2>5981 Optical Court</street2>
                <city>San Jose</city>
                <stateOrCountry>CA</stateOrCountry>
                <zipCode>95138</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Ryan</firstName>
                <lastName>Benton</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o SoloPower, Inc.</street1>
                <street2>5981 Optical Court</street2>
                <city>San Jose</city>
                <stateOrCountry>CA</stateOrCountry>
                <zipCode>95138</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Mustafa</firstName>
                <lastName>Pinarbasi</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o SoloPower, Inc.</street1>
                <street2>5981 Optical Court</street2>
                <city>San Jose</city>
                <stateOrCountry>CA</stateOrCountry>
                <zipCode>95138</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
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            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Homayoun</firstName>
                <lastName>Talleh</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o JW Kinnear Jeffer, Mangels, Butler &amp;</street1>
                <street2>Two Embarcadero Center, 5th Floor</street2>
                <city>San Francisco</city>
                <stateOrCountry>CA</stateOrCountry>
                <zipCode>94111</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Promoter</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Street Address 1 is:  c/o JW Kinnear Jeffer, Mangels, Butler &amp; Marmaro LLP</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Bulent</firstName>
                <lastName>Basol</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o JW Kinnear Jeffer, Mangels, Butler &amp;</street1>
                <street2>TWo Embarcadero Center, 5th Floor</street2>
                <city>San Francisco</city>
                <stateOrCountry>CA</stateOrCountry>
                <zipCode>94111</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Promoter</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Street Address 1 is: c/o JW Kinnear Jeffer, Mangels, Butler &amp; Marmaro LLP</relationshipClarification>
        </relatedPersonInfo>
    </relatedPersonsList>

    <offeringData>
        <industryGroup>
            <industryGroupType>Other Technology</industryGroupType>
        </industryGroup>
        <issuerSize>
            <revenueRange>Decline to Disclose</revenueRange>
        </issuerSize>
        <federalExemptionsExclusions>
            <item>06</item>
        </federalExemptionsExclusions>
        <typeOfFiling>
            <newOrAmendment>
                <isAmendment>false</isAmendment>
            </newOrAmendment>
            <dateOfFirstSale>
                <value>2010-02-04</value>
            </dateOfFirstSale>
        </typeOfFiling>
        <durationOfOffering>
            <moreThanOneYear>false</moreThanOneYear>
        </durationOfOffering>
        <typesOfSecuritiesOffered>
            <isDebtType>true</isDebtType>
        </typesOfSecuritiesOffered>
        <businessCombinationTransaction>
            <isBusinessCombinationTransaction>false</isBusinessCombinationTransaction>
            <clarificationOfResponse></clarificationOfResponse>
        </businessCombinationTransaction>
        <minimumInvestmentAccepted>0</minimumInvestmentAccepted>
        <salesCompensationList>
            <recipient>
                <recipientName>Thomas Weisel Partners, LLC</recipientName>
                <recipientCRDNumber>46237</recipientCRDNumber>
                <associatedBDName>Thomas Weisel Partners, LLC</associatedBDName>
                <associatedBDCRDNumber>46237</associatedBDCRDNumber>
                <recipientAddress>
                    <street1>One Montgomery Street</street1>
                    <street2>Suite 3700</street2>
                    <city>San Francisco</city>
                    <stateOrCountry>CA</stateOrCountry>
                    <zipCode>94104</zipCode>
                </recipientAddress>
                <statesOfSolicitationList>
                    <state>CA</state>
                    <state>NJ</state>
                </statesOfSolicitationList>
            </recipient>
        </salesCompensationList>
        <offeringSalesAmounts>
            <totalOfferingAmount>44875000</totalOfferingAmount>
            <totalAmountSold>44875000</totalAmountSold>
            <totalRemaining>0</totalRemaining>
            <clarificationOfResponse></clarificationOfResponse>
        </offeringSalesAmounts>
        <investors>
            <hasNonAccreditedInvestors>false</hasNonAccreditedInvestors>
            <totalNumberAlreadyInvested>11</totalNumberAlreadyInvested>
        </investors>
        <salesCommissionsFindersFees>
            <salesCommissions>
                <dollarAmount>7500000</dollarAmount>
                <isEstimate>true</isEstimate>
            </salesCommissions>
            <findersFees>
                <dollarAmount>0</dollarAmount>
            </findersFees>
            <clarificationOfResponse></clarificationOfResponse>
        </salesCommissionsFindersFees>
        <useOfProceeds>
            <grossProceedsUsed>
                <dollarAmount>208039510</dollarAmount>
                <isEstimate>true</isEstimate>
            </grossProceedsUsed>
            <clarificationOfResponse>Includes $19,905,951 paid to Homayoun Talleh and Bulent Basol pursuant to Common Stock Purchase Agreement and Mutual releases entered into with the issuer</clarificationOfResponse>
        </useOfProceeds>
        <signatureBlock>
            <authorizedRepresentative>false</authorizedRepresentative>
            <signature>
                <issuerName>SOLOPOWER INC</issuerName>
                <signatureName>Albert J. Boro, Jr.</signatureName>
                <nameOfSigner>Albert J. Boro, Jr.</nameOfSigner>
                <signatureTitle>SVP, GC, Secretary</signatureTitle>
                <signatureDate>2010-02-16</signatureDate>
            </signature>
        </signatureBlock>
    </offeringData>
</edgarSubmission>
