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

    <schemaVersion>X0206</schemaVersion>

    <documentType>3/A</documentType>

    <periodOfReport>2015-12-16</periodOfReport>

    <dateOfOriginalSubmission>2015-12-18</dateOfOriginalSubmission>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001634997</issuerCik>
        <issuerName>Avangrid, Inc.</issuerName>
        <issuerTradingSymbol>AGR</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001350761</rptOwnerCik>
            <rptOwnerName>Torgerson James P</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O AVANGRID, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>DURHAM HALL, 52 FARM VIEW DRIVE</rptOwnerStreet2>
            <rptOwnerCity>NEW GLOUCESTER</rptOwnerCity>
            <rptOwnerState>ME</rptOwnerState>
            <rptOwnerZipCode>04260</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chief Executive Officer</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
                <footnoteId id="F1"/>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>3187.91</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By UIL Employee Stock Ownership Plan (KSOP)</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Deferred Stock Units</value>
                <footnoteId id="F2"/>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F3"/>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F3"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F3"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>288877</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">This amendment is being filed to correct an administrative error that failed to report on Mr. Torgerson's Form 3 filed 12/18/2015 his acquisition of AGR common stock in exchange for common stock of UIL Holdings Corporation (UIL) held by the UIL Employee Stock Ownership Plan, as a result of the merger of UIL and AGR.</footnote>
        <footnote id="F2">This amendment is being filed to correct an administrative error that failed to report on Mr. Torgerson's Form 3 filed 12/18/2015 his acquisition of deferred stock units in exchange for deferred stock units of UIL, as a result of the merger of UIL and AGR.</footnote>
        <footnote id="F3">Deferred Stock Units represent shares granted to the recipient and deferred under UIL's Deferred Compensation Plan (DCP). Payment of the deferred stock underlying the deferred stock unit is made at the time elected by the recipient pursuant to the terms and provisions of the DCP.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ James P. Torgerson</signatureName>
        <signatureDate>2016-01-06</signatureDate>
    </ownerSignature>
</ownershipDocument>
