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

    <schemaVersion>X0708</schemaVersion>

    <submissionType>D</submissionType>

    <testOrLive>LIVE</testOrLive>

    <primaryIssuer>
        <cik>0001752820</cik>
        <entityName>New Energy Capital Infrastructure Offshore Credit Fund II LP</entityName>
        <issuerAddress>
            <street1>53 SOUTH MAIN STREET, THIRD FLOOR</street1>
            <city>HANOVER</city>
            <stateOrCountry>NH</stateOrCountry>
            <stateOrCountryDescription>NEW HAMPSHIRE</stateOrCountryDescription>
            <zipCode>03755</zipCode>
        </issuerAddress>
        <issuerPhoneNumber>603-643-8885</issuerPhoneNumber>
        <jurisdictionOfInc>CAYMAN ISLANDS</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>NECICF II GP, LLC</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>53 South Main Street, Third Floor</street1>
                <city>Hanover</city>
                <stateOrCountry>NH</stateOrCountry>
                <stateOrCountryDescription>NEW HAMPSHIRE</stateOrCountryDescription>
                <zipCode>03755</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>General Partner of the Issuer.</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Scott</firstName>
                <lastName>Brown</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>53 South Main Street, Third Floor</street1>
                <city>Hanover</city>
                <stateOrCountry>NH</stateOrCountry>
                <stateOrCountryDescription>NEW HAMPSHIRE</stateOrCountryDescription>
                <zipCode>03755</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Manager of the General Partner of the Issuer.</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Patrick</firstName>
                <lastName>Fox</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>53 South Main Street, Third Floor</street1>
                <city>Hanover</city>
                <stateOrCountry>NH</stateOrCountry>
                <stateOrCountryDescription>NEW HAMPSHIRE</stateOrCountryDescription>
                <zipCode>03755</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Manager of the General Partner of the Issuer.</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.7</item>
        </federalExemptionsExclusions>
        <typeOfFiling>
            <newOrAmendment>
                <isAmendment>false</isAmendment>
            </newOrAmendment>
            <dateOfFirstSale>
                <yetToOccur>true</yetToOccur>
            </dateOfFirstSale>
        </typeOfFiling>
        <durationOfOffering>
            <moreThanOneYear>false</moreThanOneYear>
        </durationOfOffering>
        <typesOfSecuritiesOffered>
            <isPooledInvestmentFundType>true</isPooledInvestmentFundType>
        </typesOfSecuritiesOffered>
        <businessCombinationTransaction>
            <isBusinessCombinationTransaction>false</isBusinessCombinationTransaction>
            <clarificationOfResponse></clarificationOfResponse>
        </businessCombinationTransaction>
        <minimumInvestmentAccepted>0</minimumInvestmentAccepted>
        <salesCompensationList></salesCompensationList>
        <offeringSalesAmounts>
            <totalOfferingAmount>400000000</totalOfferingAmount>
            <totalAmountSold>0</totalAmountSold>
            <totalRemaining>400000000</totalRemaining>
            <clarificationOfResponse>Total Offering Amount represents the aggregate offering amount of the Issuer and its parallel funds, New Energy Capital Infrastructure Credit Fund II LP and New Energy Capital Infrastructure Credit Fund II-A LP.</clarificationOfResponse>
        </offeringSalesAmounts>
        <investors>
            <hasNonAccreditedInvestors>false</hasNonAccreditedInvestors>
            <totalNumberAlreadyInvested>0</totalNumberAlreadyInvested>
        </investors>
        <salesCommissionsFindersFees>
            <salesCommissions>
                <dollarAmount>0</dollarAmount>
            </salesCommissions>
            <findersFees>
                <dollarAmount>0</dollarAmount>
            </findersFees>
            <clarificationOfResponse></clarificationOfResponse>
        </salesCommissionsFindersFees>
        <useOfProceeds>
            <grossProceedsUsed>
                <dollarAmount>0</dollarAmount>
            </grossProceedsUsed>
            <clarificationOfResponse>The Issuer's General Partner (or its designee) is entitled to receive a management fee payable by the Issuer.</clarificationOfResponse>
        </useOfProceeds>
        <signatureBlock>
            <authorizedRepresentative>false</authorizedRepresentative>
            <signature>
                <issuerName>New Energy Capital Infrastructure Offshore Credit Fund II LP</issuerName>
                <signatureName>/s/ Scott Brown</signatureName>
                <nameOfSigner>Scott Brown</nameOfSigner>
                <signatureTitle>Manager of the General Partner of the Issuer</signatureTitle>
                <signatureDate>2018-09-27</signatureDate>
            </signature>
        </signatureBlock>
    </offeringData>
</edgarSubmission>
