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    <submissionType>D</submissionType>

    <testOrLive>LIVE</testOrLive>

    <primaryIssuer>
        <cik>0001477611</cik>
        <entityName>Cool Planet Energy Systems, Inc.</entityName>
        <issuerAddress>
            <street1>Plaza Tower One, 6400 S. Fiddlers Green</street1>
            <street2>Suite 1300</street2>
            <city>Greenwood Village</city>
            <stateOrCountry>CO</stateOrCountry>
            <stateOrCountryDescription>COLORADO</stateOrCountryDescription>
            <zipCode>80111</zipCode>
        </issuerAddress>
        <issuerPhoneNumber>303-221-2029</issuerPhoneNumber>
        <jurisdictionOfInc>DELAWARE</jurisdictionOfInc>
        <edgarPreviousNameList>
            <previousName>Cool Planet BioFuels, Inc.</previousName>
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        <entityType>Corporation</entityType>
        <yearOfInc>
            <withinFiveYears>true</withinFiveYears>
            <value>2009</value>
        </yearOfInc>
    </primaryIssuer>

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            <relatedPersonName>
                <firstName>Howard</firstName>
                <lastName>Janzen</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>Plaza Tower One, 6400 S. Fiddlers Green</street1>
                <street2>Suite 1300</street2>
                <city>Greenwood Village</city>
                <stateOrCountry>CO</stateOrCountry>
                <stateOrCountryDescription>COLORADO</stateOrCountryDescription>
                <zipCode>80111</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
                <relationship>Director</relationship>
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            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Basil</firstName>
                <lastName>Horangic</lastName>
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                <street1>Plaza Tower One, 6400 S. Fiddlers Green</street1>
                <street2>Suite 1300</street2>
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                <stateOrCountry>CO</stateOrCountry>
                <stateOrCountryDescription>COLORADO</stateOrCountryDescription>
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                <lastName>Halter</lastName>
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                <street1>Plaza Tower One, 6400 S. Fiddlers Green</street1>
                <street2>Suite 1300</street2>
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                <zipCode>80111</zipCode>
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                <firstName>Anthony</firstName>
                <lastName>Radaich</lastName>
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                <street2>Suite 1300</street2>
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                <stateOrCountryDescription>COLORADO</stateOrCountryDescription>
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                <firstName>Ron</firstName>
                <lastName>Sills</lastName>
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                <street2>Suite 1300</street2>
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                <stateOrCountryDescription>COLORADO</stateOrCountryDescription>
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                <firstName>Carmichael</firstName>
                <lastName>Roberts</lastName>
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        <relatedPersonInfo>
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                <lastName>Rowan</lastName>
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            <relatedPersonRelationshipList>
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        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Vital</firstName>
                <lastName>Aelion</lastName>
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            <relatedPersonAddress>
                <street1>Plaza Tower One, 6400 S. Fiddlers Green</street1>
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    <offeringData>
        <industryGroup>
            <industryGroupType>Other Energy</industryGroupType>
        </industryGroup>
        <issuerSize>
            <revenueRange>Decline to Disclose</revenueRange>
        </issuerSize>
        <federalExemptionsExclusions>
            <item>06b</item>
        </federalExemptionsExclusions>
        <typeOfFiling>
            <newOrAmendment>
                <isAmendment>false</isAmendment>
            </newOrAmendment>
            <dateOfFirstSale>
                <value>2014-03-20</value>
            </dateOfFirstSale>
        </typeOfFiling>
        <durationOfOffering>
            <moreThanOneYear>false</moreThanOneYear>
        </durationOfOffering>
        <typesOfSecuritiesOffered>
            <isEquityType>true</isEquityType>
        </typesOfSecuritiesOffered>
        <businessCombinationTransaction>
            <isBusinessCombinationTransaction>false</isBusinessCombinationTransaction>
            <clarificationOfResponse></clarificationOfResponse>
        </businessCombinationTransaction>
        <minimumInvestmentAccepted>0</minimumInvestmentAccepted>
        <salesCompensationList>
            <recipient>
                <recipientName>Goldman, Sachs &amp; Co.</recipientName>
                <recipientCRDNumber>361</recipientCRDNumber>
                <associatedBDName>Goldman, Sachs &amp; Co.</associatedBDName>
                <associatedBDCRDNumber>361</associatedBDCRDNumber>
                <recipientAddress>
                    <street1>200 West Street</street1>
                    <city>New York</city>
                    <stateOrCountry>NY</stateOrCountry>
                    <stateOrCountryDescription>NEW YORK</stateOrCountryDescription>
                    <zipCode>10282</zipCode>
                </recipientAddress>
                <statesOfSolicitationList>
                    <value>All States</value>
                </statesOfSolicitationList>
                <foreignSolicitation>false</foreignSolicitation>
            </recipient>
            <recipient>
                <recipientName>UBS Securities LLC</recipientName>
                <recipientCRDNumber>7654</recipientCRDNumber>
                <associatedBDName>UBS Securities LLC</associatedBDName>
                <associatedBDCRDNumber>7654</associatedBDCRDNumber>
                <recipientAddress>
                    <street1>297 Park Avenue</street1>
                    <city>New York</city>
                    <stateOrCountry>NY</stateOrCountry>
                    <stateOrCountryDescription>NEW YORK</stateOrCountryDescription>
                    <zipCode>10171</zipCode>
                </recipientAddress>
                <statesOfSolicitationList>
                    <value>All States</value>
                </statesOfSolicitationList>
                <foreignSolicitation>false</foreignSolicitation>
            </recipient>
            <recipient>
                <recipientName>SDDCO Brokerage Advisors</recipientName>
                <recipientCRDNumber>153563</recipientCRDNumber>
                <associatedBDName>SDDCO Brokerage Advisors</associatedBDName>
                <associatedBDCRDNumber>153563</associatedBDCRDNumber>
                <recipientAddress>
                    <street1>485 Madison Avenue</street1>
                    <street2>15th Floor</street2>
                    <city>New York</city>
                    <stateOrCountry>NY</stateOrCountry>
                    <stateOrCountryDescription>NEW YORK</stateOrCountryDescription>
                    <zipCode>10022</zipCode>
                </recipientAddress>
                <statesOfSolicitationList>
                    <state>IL</state>
                    <description>ILLINOIS</description>
                    <state>NY</state>
                    <description>NEW YORK</description>
                    <state>CT</state>
                    <description>CONNECTICUT</description>
                    <state>GA</state>
                    <description>GEORGIA</description>
                    <state>NV</state>
                    <description>NEVADA</description>
                    <state>DC</state>
                    <description>DISTRICT OF COLUMBIA</description>
                    <state>CA</state>
                    <description>CALIFORNIA</description>
                    <state>NJ</state>
                    <description>NEW JERSEY</description>
                    <state>OH</state>
                    <description>OHIO</description>
                    <state>TX</state>
                    <description>TEXAS</description>
                    <state>FL</state>
                    <description>FLORIDA</description>
                    <state>NC</state>
                    <description>NORTH CAROLINA</description>
                    <state>PA</state>
                    <description>PENNSYLVANIA</description>
                    <state>MD</state>
                    <description>MARYLAND</description>
                    <state>MA</state>
                    <description>MASSACHUSETTS</description>
                </statesOfSolicitationList>
                <foreignSolicitation>false</foreignSolicitation>
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        <offeringSalesAmounts>
            <totalOfferingAmount>150000000</totalOfferingAmount>
            <totalAmountSold>71653284</totalAmountSold>
            <totalRemaining>78346716</totalRemaining>
            <clarificationOfResponse>Total amount sold includes approximately $51 million of repayment of indebtedness</clarificationOfResponse>
        </offeringSalesAmounts>
        <investors>
            <hasNonAccreditedInvestors>false</hasNonAccreditedInvestors>
            <totalNumberAlreadyInvested>62</totalNumberAlreadyInvested>
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        <salesCommissionsFindersFees>
            <salesCommissions>
                <dollarAmount>4000000</dollarAmount>
                <isEstimate>true</isEstimate>
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            <findersFees>
                <dollarAmount>0</dollarAmount>
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            <clarificationOfResponse></clarificationOfResponse>
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        <useOfProceeds>
            <grossProceedsUsed>
                <dollarAmount>0</dollarAmount>
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            <clarificationOfResponse></clarificationOfResponse>
        </useOfProceeds>
        <signatureBlock>
            <authorizedRepresentative>false</authorizedRepresentative>
            <signature>
                <issuerName>Cool Planet Energy Systems, Inc.</issuerName>
                <signatureName>/s/ Howard Janzen</signatureName>
                <nameOfSigner>Howard Janzen</nameOfSigner>
                <signatureTitle>Chief Executive Officer</signatureTitle>
                <signatureDate>2014-04-03</signatureDate>
            </signature>
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    </offeringData>
</edgarSubmission>
