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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 WIP6c9YQckQo78d/Iro1CedFNOFnE5Lmvnnlpiai416/gmBn2a064DeybhnEYck5
 sfFMrs7GFPuRwMKoj5sTWQ==

<SEC-DOCUMENT>0001135971-04-000160.txt : 20040602
<SEC-HEADER>0001135971-04-000160.hdr.sgml : 20040602
<ACCEPTANCE-DATETIME>20040602151628
ACCESSION NUMBER:		0001135971-04-000160
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20030814
FILED AS OF DATE:		20040602

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			POTOMAC ELECTRIC POWER CO
		CENTRAL INDEX KEY:			0000079732
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRIC SERVICES [4911]
		IRS NUMBER:				530127880
		STATE OF INCORPORATION:			VA
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		701 NINTH STREET, NW
		STREET 2:		C/O JANET PARKER OR LINDA EPPERLY RM 841
		CITY:			WASHINGTON
		STATE:			DC
		ZIP:			20068
		BUSINESS PHONE:		2028722000

	MAIL ADDRESS:	
		STREET 1:		701 NINTH STREET, NW
		STREET 2:		OFFICE OF CORPORATE SECY., ROOM 1300
		CITY:			WASHINGTON
		STATE:			DC
		ZIP:			20068

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			SIM WILLIAM J
		CENTRAL INDEX KEY:			0001076644
		STATE OF INCORPORATION:			VA
		FISCAL YEAR END:			0731

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-01072
		FILM NUMBER:		04844289

	BUSINESS ADDRESS:	
		STREET 1:		4068 ARJAY CIRCLE
		CITY:			ELLICOTT CITY
		STATE:			MD
		ZIP:			21042
		BUSINESS PHONE:		7035605196

	MAIL ADDRESS:	
		STREET 1:		701 9TH ST NW
		STREET 2:		STE 1300
		CITY:			WASHINGTON
		STATE:			DC
		ZIP:			20068
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2003-08-14</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0000079732</issuerCik>
        <issuerName>POTOMAC ELECTRIC POWER CO</issuerName>
        <issuerTradingSymbol>None</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001076644</rptOwnerCik>
            <rptOwnerName>SIM WILLIAM J</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>701 9TH ST NW</rptOwnerStreet1>
            <rptOwnerStreet2>STE 1300</rptOwnerStreet2>
            <rptOwnerCity>WASHINGTON</rptOwnerCity>
            <rptOwnerState>DC</rptOwnerState>
            <rptOwnerZipCode>20068</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>President &amp; COO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>No securities beneficially owned</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <ownerSignature>
        <signatureName>William J. Sim</signatureName>
        <signatureDate>2004-06-02</signatureDate>
    </ownerSignature>
</ownershipDocument>

</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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