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

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2010-02-24</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001136352</issuerCik>
        <issuerName>INERGY L P</issuerName>
        <issuerTradingSymbol>NRGY</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001247484</rptOwnerCik>
            <rptOwnerName>ELBERT PHILLIP</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>TWO BRUSH CREEK BLVD., SUITE 200</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>KANSAS CITY</rptOwnerCity>
            <rptOwnerState>MO</rptOwnerState>
            <rptOwnerZipCode>64112</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>COO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Units</value>
            </securityTitle>
            <transactionDate>
                <value>2010-02-24</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>14883</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>35.92</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>70000</value>
                    <footnoteId id="F3"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">The prices for this transaction range from $35.895 to $35.99.</footnote>
        <footnote id="F2">Upon request, full information about the subject transaction will be provided to the SEC.</footnote>
        <footnote id="F3">Restricted units granted under the Inergy, L.P. Long Term Incentive Plan.  The restricted units vest in three installments as follows:  25% of the restricted units vest on the 3rd anniversary of the grant date, 25% of the restricted units vest on the 4th anniversary of the grant date, and the remaining 50% of the restricted units vest on the 5th anniversary of the grant date.  The restricted units are subject to forfeiture if certain company financial performance metrics are not met.</footnote>
    </footnotes>

    <remarks>On January 12, 2004, the Common, Senior Subordinated and Junior Subordinated Units of Inergy, L.P. underwent a two-for-one split.</remarks>

    <ownerSignature>
        <signatureName>/s/ Judy Riddle (attorney-in-fact) for Phillip Elbert</signatureName>
        <signatureDate>2010-02-26</signatureDate>
    </ownerSignature>
</ownershipDocument>
