<SEC-DOCUMENT>0001104659-18-054844.txt : 20180831
<SEC-HEADER>0001104659-18-054844.hdr.sgml : 20180831
<ACCEPTANCE-DATETIME>20180831175935
ACCESSION NUMBER:		0001104659-18-054844
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20180831
FILED AS OF DATE:		20180831
DATE AS OF CHANGE:		20180831

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			NRG ENERGY, INC.
		CENTRAL INDEX KEY:			0001013871
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRIC SERVICES [4911]
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-36002
		FILM NUMBER:		181050868

	BUSINESS ADDRESS:	
		STREET 1:		804 CARNEGIE CENTER
		STREET 2:		-
		CITY:			PRINCETON
		STATE:			NJ
		ZIP:			08540
		BUSINESS PHONE:		609-524-4500

	MAIL ADDRESS:	
		STREET 1:		804 CARNEGIE CENTER
		STREET 2:		-
		CITY:			PRINCETON
		STATE:			NJ
		ZIP:			08540

	FORMER NAME:	
		FORMER CONFORMED NAME:	NRG ENERGY INC
		DATE OF NAME CHANGE:	19960509

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			NRG Yield, Inc.
		CENTRAL INDEX KEY:			0001567683
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRIC SERVICES [4911]
		IRS NUMBER:				461777204
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		804 CARNEGIE CENTER
		CITY:			PRINCETON
		STATE:			NJ
		ZIP:			08540
		BUSINESS PHONE:		609-524-9500

	MAIL ADDRESS:	
		STREET 1:		804 CARNEGIE CENTER
		CITY:			PRINCETON
		STATE:			NJ
		ZIP:			08540

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	NRG Yieldco, Inc.
		DATE OF NAME CHANGE:	20130123
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>a4.xml
<DESCRIPTION>4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2018-08-31</periodOfReport>

    <notSubjectToSection16>1</notSubjectToSection16>

    <issuer>
        <issuerCik>0001567683</issuerCik>
        <issuerName>NRG Yield, Inc.</issuerName>
        <issuerTradingSymbol>NYLD</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001013871</rptOwnerCik>
            <rptOwnerName>NRG ENERGY, INC.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O NRG YIELD, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>211 CARNEGIE CENTER</rptOwnerStreet2>
            <rptOwnerCity>PRINCETON</rptOwnerCity>
            <rptOwnerState>NJ</rptOwnerState>
            <rptOwnerZipCode>08540</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Class B Units of NRG Yield LLC</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F1"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2018-08-31</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F2"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>42738750</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F1"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Class A Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>42738750</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
        <derivativeTransaction>
            <securityTitle>
                <value>Class D Units of NRG Yield LLC</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F1"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2018-08-31</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F2"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>42738750</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F1"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Class C Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>42738750</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Pursuant to an amended and restated exchange agreement, dated May 14, 2015 (the &quot;Exchange Agreement&quot;), the Class B Units of NRG Yield LLC (&quot;Class B Units&quot;) are exchangeable at any time for shares of Class A Common Stock of the Issuer (&quot;Class A Common Stock&quot;), and the Class D Units of NRG Yield LLC (&quot;Class D Units&quot;) are exchangeable at any time for shares of Class C Common Stock of the Issuer (&quot;Class C Common Stock&quot;), in each case on a one-for-one basis, subject to equitable adjustments for stock splits, stock dividends and reclassifications. Pursuant to the Exchange Agreement, as Class B Units are exchanged for shares of Class A Common Stock and as Class D Units are exchanged for shares of Class C Common Stock, an equivalent number of shares of Class B Common Stock of the Issuer (&quot;Class B Common Stock&quot;) and shares of Class D Common Stock of the Issuer (&quot;Class D Common Stock&quot;), respectively, will automatically be cancelled.</footnote>
        <footnote id="F2">On August 31, 2018, NRG Repowering Holdings LLC, a wholly owned subsidiary of the Reporting Person (together with the Reporting Person, the &quot;NRG Parties&quot;), sold 100% of the outstanding membership interests of Zephyr Renewables LLC (the &quot;Company&quot;), pursuant to a purchase and sale agreement, dated February 6, 2018, for total consideration of approximately $1,347,000,000. At the time of sale, the Company owned (i) 100% of the Class B Common Stock and 100% of the Class D Common Stock and (ii) 100% of the Class B Units and 100% of the Class D Units.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Brian Curci, Authorized Representative</signatureName>
        <signatureDate>2018-08-31</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
