<SEC-DOCUMENT>0001179110-19-007139.txt : 20190604
<SEC-HEADER>0001179110-19-007139.hdr.sgml : 20190604
<ACCEPTANCE-DATETIME>20190604170831
ACCESSION NUMBER:		0001179110-19-007139
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20190601
FILED AS OF DATE:		20190604
DATE AS OF CHANGE:		20190604

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Schaumburg Anne C
		CENTRAL INDEX KEY:			0001322455

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-15891
		FILM NUMBER:		19877521

	MAIL ADDRESS:	
		STREET 1:		91 MINNISINK ROAD
		CITY:			SHORT HILLS
		STATE:			NJ
		ZIP:			07078

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			NRG ENERGY, INC.
		CENTRAL INDEX KEY:			0001013871
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRIC SERVICES [4911]
		IRS NUMBER:				411724239
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	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 COMPANY:	
		FORMER CONFORMED NAME:	NRG ENERGY INC
		DATE OF NAME CHANGE:	19960509
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>FORM 4 -
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2019-06-01</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001013871</issuerCik>
        <issuerName>NRG ENERGY, INC.</issuerName>
        <issuerTradingSymbol>NRG</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001322455</rptOwnerCik>
            <rptOwnerName>Schaumburg Anne C</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>NRG ENERGY, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>804 CARNEGIE CENTER</rptOwnerStreet2>
            <rptOwnerCity>PRINCETON</rptOwnerCity>
            <rptOwnerState>NJ</rptOwnerState>
            <rptOwnerZipCode>08540</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock, par value, $.01 per share</value>
            </securityTitle>
            <transactionDate>
                <value>2019-06-01</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>5421</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>72869</value>
                    <footnoteId id="F3"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">Represents 5,421 Deferred Stock Units issued to the Reporting Person by NRG Energy, Inc. under NRG Energy, Inc.'s Amended and Restated Long-Term Incentive Plan.</footnote>
        <footnote id="F2">Each Deferred Stock Unit is equivalent in value to one share of NRG Energy, Inc.'s Common Stock, par value $.01 per share. On June 1, 2019, Ms. Schaumburg received from NRG Energy, Inc. one such share of Common Stock in exchange for each Deferred Stock Unit she was issued on that same date.</footnote>
        <footnote id="F3">Includes 1,487 dividend equivalent rights.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Christine Zoino, by Power of Attorney</signatureName>
        <signatureDate>2019-06-04</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
