<?xml version="1.0"?>
<edgarSubmission>

    <schemaVersion>X0708</schemaVersion>

    <submissionType>D/A</submissionType>

    <testOrLive>LIVE</testOrLive>

    <primaryIssuer>
        <cik>0001758462</cik>
        <entityName>Energy Spectrum Partners VIII LP</entityName>
        <issuerAddress>
            <street1>5956 SHERRY LANE, SUITE 900</street1>
            <city>DALLAS</city>
            <stateOrCountry>TX</stateOrCountry>
            <stateOrCountryDescription>TEXAS</stateOrCountryDescription>
            <zipCode>75225</zipCode>
        </issuerAddress>
        <issuerPhoneNumber>214-987-6100</issuerPhoneNumber>
        <jurisdictionOfInc>DELAWARE</jurisdictionOfInc>
        <issuerPreviousNameList>
            <value>None</value>
        </issuerPreviousNameList>
        <edgarPreviousNameList>
            <value>None</value>
        </edgarPreviousNameList>
        <entityType>Limited Partnership</entityType>
        <yearOfInc>
            <withinFiveYears>true</withinFiveYears>
            <value>2018</value>
        </yearOfInc>
    </primaryIssuer>

    <relatedPersonsList>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>N/A</firstName>
                <lastName>Energy Spectrum Capital VIII LP</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>5956 Sherry Lane</street1>
                <street2>Suite 900</street2>
                <city>DALLAS</city>
                <stateOrCountry>TX</stateOrCountry>
                <stateOrCountryDescription>TEXAS</stateOrCountryDescription>
                <zipCode>75225</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
                <relationship>Promoter</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Energy Spectrum Capital VIII LP is the general partner (&quot;General Partner&quot;) of the Issuer</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Thomas</firstName>
                <middleName>O.</middleName>
                <lastName>Whitener, Jr.</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>5956 Sherry Lane</street1>
                <street2>Suite 900</street2>
                <city>DALLAS</city>
                <stateOrCountry>TX</stateOrCountry>
                <stateOrCountryDescription>TEXAS</stateOrCountryDescription>
                <zipCode>75225</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Mr. Whitener is a Principal of the Issuer and an Executive Officer of the General Partner</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>James</firstName>
                <middleName>W.</middleName>
                <lastName>Spann</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>5956 Sherry Lane</street1>
                <street2>Suite 900</street2>
                <city>DALLAS</city>
                <stateOrCountry>TX</stateOrCountry>
                <stateOrCountryDescription>TEXAS</stateOrCountryDescription>
                <zipCode>75225</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Mr. Spann is a Principal of the Issuer and an Executive Officer of the General Partner</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>James</firstName>
                <middleName>P.</middleName>
                <lastName>Benson</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>5956 Sherry Lane</street1>
                <street2>Suite 900</street2>
                <city>DALLAS</city>
                <stateOrCountry>TX</stateOrCountry>
                <stateOrCountryDescription>TEXAS</stateOrCountryDescription>
                <zipCode>75225</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Mr. Benson is a Principal of the Issuer and an Executive Officer of the General Partner</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Peter</firstName>
                <middleName>W.</middleName>
                <lastName>Augustini</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>5956 Sherry Lane</street1>
                <street2>Suite 900</street2>
                <city>DALLAS</city>
                <stateOrCountry>TX</stateOrCountry>
                <stateOrCountryDescription>TEXAS</stateOrCountryDescription>
                <zipCode>75225</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Mr. Augustini is a Principal of the Issuer and an Executive Officer of the General Partner</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Benjamin</firstName>
                <middleName>H.</middleName>
                <lastName>Davis</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>5956 Sherry Lane</street1>
                <street2>Suite 900</street2>
                <city>DALLAS</city>
                <stateOrCountry>TX</stateOrCountry>
                <stateOrCountryDescription>TEXAS</stateOrCountryDescription>
                <zipCode>75225</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Mr. Davis is a Principal of the Issuer and an Executive Officer of the General Partner</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Mark</firstName>
                <middleName>S.</middleName>
                <lastName>Honeybone</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>5956 Sherry Lane</street1>
                <street2>Suite 900</street2>
                <city>DALLAS</city>
                <stateOrCountry>TX</stateOrCountry>
                <stateOrCountryDescription>TEXAS</stateOrCountryDescription>
                <zipCode>75225</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Mr. Honeybone is a Principal of the Issuer and an Executive Officer of the General Partner</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Chandler</firstName>
                <middleName>A.</middleName>
                <lastName>Phillips</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>5956 Sherry Lane</street1>
                <street2>Suite 900</street2>
                <city>DALLAS</city>
                <stateOrCountry>TX</stateOrCountry>
                <stateOrCountryDescription>TEXAS</stateOrCountryDescription>
                <zipCode>75225</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Mr. Phillips is a Principal of the Issuer and an Executive Officer of the General Partner</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Michael</firstName>
                <middleName>C.</middleName>
                <lastName>Mayon</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>5956 Sherry Lane</street1>
                <street2>Suite 900</street2>
                <city>DALLAS</city>
                <stateOrCountry>TX</stateOrCountry>
                <stateOrCountryDescription>TEXAS</stateOrCountryDescription>
                <zipCode>75225</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Mr. Mayon is a Principal of the Issuer and an Executive Officer of the General Partner</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Alison</firstName>
                <middleName>K.</middleName>
                <lastName>Fischer</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>5956 Sherry Lane</street1>
                <street2>Suite 900</street2>
                <city>DALLAS</city>
                <stateOrCountry>TX</stateOrCountry>
                <stateOrCountryDescription>TEXAS</stateOrCountryDescription>
                <zipCode>75225</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Ms. Fischer is a Principal of the Issuer and an Executive Officer of the General Partner</relationshipClarification>
        </relatedPersonInfo>
    </relatedPersonsList>

    <offeringData>
        <industryGroup>
            <industryGroupType>Pooled Investment Fund</industryGroupType>
            <investmentFundInfo>
                <investmentFundType>Private Equity Fund</investmentFundType>
                <is40Act>false</is40Act>
            </investmentFundInfo>
        </industryGroup>
        <issuerSize>
            <revenueRange>Decline to Disclose</revenueRange>
        </issuerSize>
        <federalExemptionsExclusions>
            <item>06b</item>
            <item>3C</item>
            <item>3C.1</item>
            <item>3C.7</item>
        </federalExemptionsExclusions>
        <typeOfFiling>
            <newOrAmendment>
                <isAmendment>true</isAmendment>
                <previousAccessionNumber>0001758462-20-000002</previousAccessionNumber>
            </newOrAmendment>
            <dateOfFirstSale>
                <value>2018-11-01</value>
            </dateOfFirstSale>
        </typeOfFiling>
        <durationOfOffering>
            <moreThanOneYear>true</moreThanOneYear>
        </durationOfOffering>
        <typesOfSecuritiesOffered>
            <isPooledInvestmentFundType>true</isPooledInvestmentFundType>
        </typesOfSecuritiesOffered>
        <businessCombinationTransaction>
            <isBusinessCombinationTransaction>false</isBusinessCombinationTransaction>
            <clarificationOfResponse></clarificationOfResponse>
        </businessCombinationTransaction>
        <minimumInvestmentAccepted>1000000</minimumInvestmentAccepted>
        <salesCompensationList>
            <recipient>
                <recipientName>FirstPoint Equity Capital Limited</recipientName>
                <recipientCRDNumber>None</recipientCRDNumber>
                <associatedBDName>Crito Capital LLC</associatedBDName>
                <associatedBDCRDNumber>161724</associatedBDCRDNumber>
                <recipientAddress>
                    <street1>8 Wright Street</street1>
                    <street2>Suite 107</street2>
                    <city>WESTPORT</city>
                    <stateOrCountry>CT</stateOrCountry>
                    <stateOrCountryDescription>CONNECTICUT</stateOrCountryDescription>
                    <zipCode>06880</zipCode>
                </recipientAddress>
                <statesOfSolicitationList>
                    <value>All States</value>
                </statesOfSolicitationList>
                <foreignSolicitation>false</foreignSolicitation>
            </recipient>
            <recipient>
                <recipientName>BHA Select Network, LLC</recipientName>
                <recipientCRDNumber>168883</recipientCRDNumber>
                <associatedBDName>None</associatedBDName>
                <associatedBDCRDNumber>None</associatedBDCRDNumber>
                <recipientAddress>
                    <street1>745 Atlantic Avenue</street1>
                    <street2>7th Floor</street2>
                    <city>BOSTON</city>
                    <stateOrCountry>MA</stateOrCountry>
                    <stateOrCountryDescription>MASSACHUSETTS</stateOrCountryDescription>
                    <zipCode>02111</zipCode>
                </recipientAddress>
                <statesOfSolicitationList>
                    <value>All States</value>
                </statesOfSolicitationList>
                <foreignSolicitation>false</foreignSolicitation>
            </recipient>
        </salesCompensationList>
        <offeringSalesAmounts>
            <totalOfferingAmount>969230769</totalOfferingAmount>
            <totalAmountSold>969230769</totalAmountSold>
            <totalRemaining>0</totalRemaining>
            <clarificationOfResponse>The Total Amount Sold includes commitments made by the General Partner.</clarificationOfResponse>
        </offeringSalesAmounts>
        <investors>
            <hasNonAccreditedInvestors>false</hasNonAccreditedInvestors>
            <totalNumberAlreadyInvested>84</totalNumberAlreadyInvested>
        </investors>
        <salesCommissionsFindersFees>
            <salesCommissions>
                <dollarAmount>0</dollarAmount>
            </salesCommissions>
            <findersFees>
                <dollarAmount>154720</dollarAmount>
                <isEstimate>true</isEstimate>
            </findersFees>
            <clarificationOfResponse>Placement agent fees include a retainer and percentage of commitments accepted from certain investors.</clarificationOfResponse>
        </salesCommissionsFindersFees>
        <useOfProceeds>
            <grossProceedsUsed>
                <dollarAmount>0</dollarAmount>
            </grossProceedsUsed>
            <clarificationOfResponse>A portion of the offering proceeds may be used to pay management fees to the Advisor which may be used to pay the salaries of executive officers and other principals of affiliates of the General Partner.</clarificationOfResponse>
        </useOfProceeds>
        <signatureBlock>
            <authorizedRepresentative>false</authorizedRepresentative>
            <signature>
                <issuerName>Energy Spectrum Partners VIII LP</issuerName>
                <signatureName>/s/ James W. Spann</signatureName>
                <nameOfSigner>James W. Spann</nameOfSigner>
                <signatureTitle>Managing Director of Energy Spectrum Capital VIII LP, the GP</signatureTitle>
                <signatureDate>2020-05-15</signatureDate>
            </signature>
        </signatureBlock>
    </offeringData>
</edgarSubmission>
