<SEC-DOCUMENT>0001209191-16-131422.txt : 20160706
<SEC-HEADER>0001209191-16-131422.hdr.sgml : 20160706
<ACCEPTANCE-DATETIME>20160706131754
ACCESSION NUMBER:		0001209191-16-131422
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20160701
FILED AS OF DATE:		20160706
DATE AS OF CHANGE:		20160706

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SOUTHERN CO
		CENTRAL INDEX KEY:			0000092122
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRIC SERVICES [4911]
		IRS NUMBER:				580690070
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		30 IVAN ALLEN JR. BLVD., N.W.
		CITY:			ATLANTA
		STATE:			GA
		ZIP:			30308
		BUSINESS PHONE:		4045065000

	MAIL ADDRESS:	
		STREET 1:		30 IVAN ALLEN JR. BLVD., N.W.
		CITY:			ATLANTA
		STATE:			GA
		ZIP:			30308

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Evans Andrew W
		CENTRAL INDEX KEY:			0001338158

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-03526
		FILM NUMBER:		161753227

	MAIL ADDRESS:	
		STREET 1:		TEN PEACHTREE PLACE, LOC. 1466
		CITY:			ATLANTA
		STATE:			GA
		ZIP:			30309
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2016-07-01</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000092122</issuerCik>
        <issuerName>SOUTHERN CO</issuerName>
        <issuerTradingSymbol>SO</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001338158</rptOwnerCik>
            <rptOwnerName>Evans Andrew W</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>30 IVAN ALLEN JR. BLVD., NW</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>ATLANTA</rptOwnerCity>
            <rptOwnerState>GA</rptOwnerState>
            <rptOwnerZipCode>30308</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Pres &amp; CEO, AGL Resources Inc.</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Southern Co Restricted Stock Units</value>
                <footnoteId id="F1"/>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>0.00</value>
                <footnoteId id="F2"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2016-07-01</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>112739</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F2"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F2"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Southern Company Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>112739</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>112739</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">The restricted stock units (&quot;RSUs&quot;) will be settled in shares of Southern Company Common Stock.  Each RSU represents the right to receive one share of Southern Company Common Stock.</footnote>
        <footnote id="F2">In accordance with the Agreement and Plan of Merger dated August 23, 2015 by and among AGL Resources Inc., The Southern Company and AMS Corp., outstanding performance share units of AGL Resources Inc. were assumed by Southern Company and converted into time vesting RSUs of Southern Company.  Vesting of the RSUs is as follows:  28,704 RSUs vest December 31, 2016; 37,980 RSUs vest December 31, 2017; and 46,055 RSUs vest December 31, 2018.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Laura O. Hewett, Attorney-in-Fact for Andrew W. Evans</signatureName>
        <signatureDate>2016-07-06</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
