-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
 MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 DwrobcWwZkCtVJPQW7SXKHHXxCmola5lHbStNEm44qJmKQQNHhuqE+PG2ek6FuLX
 v46lP9lJAp4R1wBpZFoXOQ==

<SEC-DOCUMENT>0001238425-03-000001.txt : 20030604
<SEC-HEADER>0001238425-03-000001.hdr.sgml : 20030604
<ACCEPTANCE-DATETIME>20030604094910
ACCESSION NUMBER:		0001238425-03-000001
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20030530
FILED AS OF DATE:		20030604

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			CARON MICHAEL W
		CENTRAL INDEX KEY:			0001238425

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-03429
		FILM NUMBER:		03731302

	BUSINESS ADDRESS:	
		STREET 1:		40 ESSEX DRIVE
		CITY:			YARMOUTH
		STATE:			ME
		ZIP:			04096-8152
		BUSINESS PHONE:		2078465204

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MAINE PUBLIC SERVICE CO
		CENTRAL INDEX KEY:			0000061611
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRIC SERVICES [4911]
		IRS NUMBER:				010113635
		STATE OF INCORPORATION:			ME
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		209 STATE ST
		CITY:			PRESQUE ISLE
		STATE:			ME
		ZIP:			04769-1209
		BUSINESS PHONE:		2077685811

	MAIL ADDRESS:	
		STREET 1:		PO BOX 1209
		CITY:			PRESQUE ISLE
		STATE:			ME
		ZIP:			04769-1209
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>

<ownershipDocument>

    <documentType>3</documentType>

    <periodOfReport>2003-05-30</periodOfReport>


    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0000061611</issuerCik>
        <issuerName>MAINE PUBLIC SERVICE CO</issuerName>
        <issuerTradingSymbol>MAP</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001238425</rptOwnerCik>
            <rptOwnerName>CARON MICHAEL W</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>  </rptOwnerStreet1>
            <rptOwnerStreet2>  </rptOwnerStreet2>
            <rptOwnerCity>  </rptOwnerCity>
            <rptOwnerState>  </rptOwnerState>
            <rptOwnerZipCode>  </rptOwnerZipCode>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeSecurity>
        <securityTitle>
            <value>Common</value>
        </securityTitle>
        <transactionAmounts>
            <transactionShares>
                <value>500</value>
            </transactionShares>
        </transactionAmounts>
        <ownershipNature>
            <directOrIndirectOwnership>
                <value>D</value>
            </directOrIndirectOwnership>
        </ownershipNature>
    </nonDerivativeSecurity>


    <ownerSignature>
        <signatureName>/s/ Larry E. LaPlante</signatureName>
        <signatureDate>2003-06-04</signatureDate>
    </ownerSignature>

</ownershipDocument>

</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----