<SEC-DOCUMENT>0001109357-17-000026.txt : 20170123
<SEC-HEADER>0001109357-17-000026.hdr.sgml : 20170123
<ACCEPTANCE-DATETIME>20170123133847
ACCESSION NUMBER:		0001109357-17-000026
CONFORMED SUBMISSION TYPE:	5
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20161231
FILED AS OF DATE:		20170123
DATE AS OF CHANGE:		20170123

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			EXELON CORP
		CENTRAL INDEX KEY:			0001109357
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRIC & OTHER SERVICES COMBINED [4931]
		IRS NUMBER:				232990190
		STATE OF INCORPORATION:			PA
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		PO BOX 805398
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60680-5398
		BUSINESS PHONE:		3123947399

	MAIL ADDRESS:	
		STREET 1:		PO BOX 805398
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60680-5398

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Von Hoene William A. Jr.
		CENTRAL INDEX KEY:			0001425293

	FILING VALUES:
		FORM TYPE:		5
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-16169
		FILM NUMBER:		17540483

	MAIL ADDRESS:	
		STREET 1:		10 SOUTH DEARBORN STREET
		STREET 2:		54TH FLOOR
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60603
</SEC-HEADER>
<DOCUMENT>
<TYPE>5
<SEQUENCE>1
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        <issuerName>EXELON CORP</issuerName>
        <issuerTradingSymbol>EXC</issuerTradingSymbol>
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            <rptOwnerName>Von Hoene William A. Jr.</rptOwnerName>
        </reportingOwnerId>
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            <rptOwnerStreet1>10 SOUTH DEARBORN STREET</rptOwnerStreet1>
            <rptOwnerStreet2>54TH FLOOR</rptOwnerStreet2>
            <rptOwnerCity>CHICAGO</rptOwnerCity>
            <rptOwnerState>IL</rptOwnerState>
            <rptOwnerZipCode>60603</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
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        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Sr. Executive Vice President</officerTitle>
        </reportingOwnerRelationship>
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        <derivativeHolding>
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        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>NQ Stock Option 01/25/2010</value>
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                </sharesOwnedFollowingTransaction>
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                </natureOfOwnership>
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        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>NQ Stock Option 01/28/2008</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>73.29</value>
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            <exerciseDate>
                <footnoteId id="F7"/>
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            <expirationDate>
                <footnoteId id="F7"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
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                    <value>19000</value>
                </sharesOwnedFollowingTransaction>
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                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>NQ Stock Option 01/22/2007</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>59.96</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F7"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F7"/>
            </expirationDate>
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                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>19000</value>
                </underlyingSecurityShares>
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                <sharesOwnedFollowingTransaction>
                    <value>19000</value>
                </sharesOwnedFollowingTransaction>
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                <directOrIndirectOwnership>
                    <value>D</value>
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        </derivativeHolding>
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    <footnotes>
        <footnote id="F1">Balance includes the following shares acquired through dividend reinvestment: 795, 809, 812 and 845 shares acquired on March 10, 2016, June 10, 2016, September 9, 2016 and December 9, 2016 respectively.</footnote>
        <footnote id="F2">Restricted stock unit awards made pursuant to the Exelon Long Term Incentive Plan.  Share awards are made annually in January at the Compensation and Leadership Development committee's meeting and vest in 1/3 increments on the date of the committee's January meeting in the first, second and third years after the award was made.</footnote>
        <footnote id="F3">Balance consists of unvested shares remaining from the awards granted in January of the previous three years along with reinvested dividends as follows: 453, 511, 534 and 516 shares acquired on March 10, 2016, June 10, 2016, September 9, 2016 and December 9, 2016 respectively.</footnote>
        <footnote id="F4">Restricted stock grant made pursuant to the Exelon Long Term Incentive Plan.  100% of the shares will vest on October 21, 2018.</footnote>
        <footnote id="F5">Phantom share equivalents representing units held in the Exelon stock fund in a multi-fund, non-qualified deferred compensation plan.  The Exelon stock fund is a unitized fund that consists of Exelon common stock and short term investments.  Units of the fund will be settled upon the reporting person's separation from the board for any reason. Units will be settled in cash.  Units are acquired through regular periodic contributions, company matching contributions and the reinvestment of dividend equivalents.  The balance of phantom share equivalents may fluctuate from time to time due to fluctuations in the fund composition.</footnote>
        <footnote id="F6">Balance inlcudes 31, 28, 28 and 33 share equivalents accrued on February 10, 2016, May 11, 2016, August 13, 2016 and November 9, 2016 thorugh automatic dividend reinvestment.</footnote>
        <footnote id="F7">Non qualified employee stock options, awarded pursuant to the Exelon Long Term Incentive Plan.  Options vest in 1/4 increments on each of the first four anniversaries of the grant date, referenced in column one, and expire on the tenth anniversay of the grant date.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Scott N. Peters, Esq. Attorney in Fact for William A. Von Hoene, Jr.</signatureName>
        <signatureDate>2017-01-20</signatureDate>
    </ownerSignature>
</ownershipDocument>
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</DOCUMENT>
</SEC-DOCUMENT>
