<SUBMISSION>
<ACCESSION-NUMBER>0001628280-18-008161
<TYPE>4
<PUBLIC-DOCUMENT-COUNT>1
<PERIOD>20180619
<FILING-DATE>20180621
<DATE-OF-FILING-DATE-CHANGE>20180621
<REPORTING-OWNER>
<OWNER-DATA>
<CONFORMED-NAME>Dymbort Jason E.
<CIK>0001645454
</OWNER-DATA>
<FILING-VALUES>
<FORM-TYPE>4
<ACT>34
<FILE-NUMBER>001-37447
<FILM-NUMBER>18911496
</FILING-VALUES>
<MAIL-ADDRESS>
<STREET1>77 RIO ROBLES
<CITY>SAN JOSE
<STATE>CA
<ZIP>95134
</MAIL-ADDRESS>
</REPORTING-OWNER>
<ISSUER>
<COMPANY-DATA>
<CONFORMED-NAME>8point3 Energy Partners LP
<CIK>0001635581
<ASSIGNED-SIC>4911
<IRS-NUMBER>473298142
<FISCAL-YEAR-END>1130
</COMPANY-DATA>
<BUSINESS-ADDRESS>
<PHONE>408-240-5500
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>77 RIO ROBLES
<CITY>SAN JOSE
<STATE>CA
<ZIP>95134
</MAIL-ADDRESS>
</ISSUER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>wf-form4_152959916964699.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2018-06-19</periodOfReport>

    <notSubjectToSection16>1</notSubjectToSection16>

    <issuer>
        <issuerCik>0001635581</issuerCik>
        <issuerName>8point3 Energy Partners LP</issuerName>
        <issuerTradingSymbol>CAFD</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001645454</rptOwnerCik>
            <rptOwnerName>Dymbort Jason E.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>77 RIO ROBLES</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>SAN JOSE</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>95134</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>General Counsel</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Class A Shares representing limited partner interests</value>
            </securityTitle>
            <transactionDate>
                <value>2018-06-19</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>D</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>1600</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">Pursuant to the Agreement and Plan of Merger and Purchase Agreement, dated as of February 5, 2018, by and among 8point3 Energy Partners LP, 8point3 General Partner, LLC, 8point3 Operating Company, LLC, 8point3 Holding Company, LLC, 8point3 Solar CEI, LLC, 8point3 Co-Invest Feeder 1, LLC, 8point3 Co-Invest Feeder 2, LLC, CD Clean Energy and Infrastructure V JV (Holdco), LLC, 8point3 Partnership Merger Sub, LLC, 8point3 OpCo Merger Sub 1, LLC, and 8point3 OpCo Merger Sub 2, LLC, all of the Class A Shares held by the Reporting Person were cancelled and converted into the right to receive an amount in cash equal to $12.48 per share.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Jason E. Dymbort</signatureName>
        <signatureDate>2018-06-21</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SUBMISSION>
