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

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2020-04-15</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001567683</issuerCik>
        <issuerName>Clearway Energy, Inc.</issuerName>
        <issuerTradingSymbol>CWEN</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001685648</rptOwnerCik>
            <rptOwnerName>Plotkin Chad</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>CLEARWAY ENERGY, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>300 CARNEGIE CENTER, SUITE 300</rptOwnerStreet2>
            <rptOwnerCity>PRINCETON</rptOwnerCity>
            <rptOwnerState>NJ</rptOwnerState>
            <rptOwnerZipCode>08540</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>SVP and CFO</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Class C Common Stock, par value $.01 per share</value>
            </securityTitle>
            <transactionDate>
                <value>2020-04-15</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>8250</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>47082</value>
                    <footnoteId id="F3"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Relative Performance Stock Units</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F4"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2020-04-15</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>16724</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2023-04-15</value>
            </exerciseDate>
            <expirationDate>
                <value>2023-04-15</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Class C Common Stock, par value $.01 per share</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>25086</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>16724</value>
                    <footnoteId id="F5"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Represents Restricted Stock Units (&quot;RSUs&quot;) issued to Mr. Plotkin under Clearway Energy Inc.'s Amended and Restated 2013 Equity Incentive Plan (the &quot;LTIP&quot;).</footnote>
        <footnote id="F2">Each RSU is equivalent in value to one share of Clearway Energy, Inc.'s Class C Common Stock, par value $.01 per share.</footnote>
        <footnote id="F3">The Reporting Person will receive from Clearway Energy, Inc. one such share of Class C Common Stock for each RSU that will vest ratably over a three-year period beginning on the first anniversaryof the date of the grant.</footnote>
        <footnote id="F4">The Reporting Person was issued 16,724 Relative Performance Stock Units (&quot;RPSUs&quot;) by Clearway Energy, Inc. under the LTIP on April 15, 2020. The RPSUs will convert to shares of Clearway Energy, Inc. Class C Common Stock on April 15, 2023 only in the event the Company has achieved a certain level of total shareholder return (&quot;TSR&quot;) relative to the Peer Group (defined below) over a three-year performance period. The number of shares of Common Stock that the Reporting Person may receive is interpolated for TSR falling between Threshold, Target, and Maximum levels as described below.</footnote>
        <footnote id="F5">Reporting Person will receive (i) a maximum of 25,086 shares of Class C Common Stock if Company's TSR is ranked at or above the 75th percentile relative to a peer group of companies approved by the Company's Compensation Committee (the &quot;Peer Group&quot;) for the performance period (&quot;Maximum&quot;); (ii) 16,724 shares of Class C Common Stock if Company's TSR is ranked at the 50th percentile relative to the Peer Group for the performance period (the &quot;Target&quot;); provided, however, if TSR is less than negative twenty percent (-20%), the Company's TSR must be ranked at the 60th percentile relative to the Peer Group for the performance period to receive the Target award; or (iii) 4,181 shares of Common Stock if Company's TSR is ranked at the 25th percentile relative to the Peer Group for the performance period (the &quot;Threshold&quot;). The Reporting Person will not receive any shares of Common Stock if Company's TSR is below the 25th percentile.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Michael A. Brown, by Power of Attorney</signatureName>
        <signatureDate>2020-04-17</signatureDate>
    </ownerSignature>
</ownershipDocument>
