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

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2015-07-13</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001140310</issuerCik>
        <issuerName>ZBB ENERGY CORP</issuerName>
        <issuerTradingSymbol>ZBB</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001210618</rptOwnerCik>
            <rptOwnerName>Solar Power, Inc.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>3400 DOUGLAS BOULEVARD, SUITE 285</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>ROSEVILLE</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>95661</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock, par value $0.01 per share (&quot;Common Stock&quot;)</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>8000000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F1"/>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Series C Convertible Preferred Stock</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>0.6678</value>
                <footnoteId id="F2"/>
                <footnoteId id="F3"/>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F2"/>
                <footnoteId id="F3"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F2"/>
                <footnoteId id="F3"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>42000000</value>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Warrant</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>0.7346</value>
                <footnoteId id="F4"/>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F4"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F4"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>50000000</value>
                    <footnoteId id="F4"/>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F4"/>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Solar Power, Inc. (the &quot;Reporting Person&quot;) is the beneficial owner of 8,000,000 shares of Common Stock.</footnote>
        <footnote id="F2">The Reporting Person is the beneficial owner of 28,048 shares of the issuer's Series C convertible Preferred Stock (the &quot;Subscribed Preferred Shares&quot;) convertible into 42,000,000 shares of Common Stock. Pursuant to certain securities purchase agreement (the &quot;Securities Purchase Agreement&quot;) by and between the Reporting Person and the issuer dated April 17, 2015, the Subscribed Preferred Shares are convertible at a conversion price of $0.6678, prepaid at the closing (the &quot;Closing&quot;) of the transactions contemplated under the Securities Purchase Agreement; provided, that (A) the first one-fourth of the Subscribed Preferred Shares only become convertible upon the completion of five megawatts worth of solar projects (the &quot;Projects&quot;) in accordance with certain supply agreement by and between the Reporting Person and the issuer dated July 13, 2015,</footnote>
        <footnote id="F3">(Continued from footnote 2) (B) the second one-fourth only become convertible upon the completion of 15 megawatts worth of Projects, (C) the third one-fourth only become convertible upon the completion of 25 megawatts worth of Projects and (D) the last one-fourth only become convertible upon the completion of 40 megawatts worth of Projects.</footnote>
        <footnote id="F4">The Reporting Person is the beneficial owner of a warrant (the &quot;Warrant&quot;) to purchase 50,000,000 shares of Common Stock at an exercise price equal to $0.7346. The Warrant has a four year term beginning on the date of the Closing and only becomes exercisable upon the completion of 40 megawatts worth of Projects.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Amy Jing Liu, Chief Financial Officer, on behalf of Solar Power, Inc.</signatureName>
        <signatureDate>2015-07-16</signatureDate>
    </ownerSignature>
</ownershipDocument>
