<SEC-DOCUMENT>0000066756-18-000066.txt : 20180627
<SEC-HEADER>0000066756-18-000066.hdr.sgml : 20180627
<ACCEPTANCE-DATETIME>20180627160750
ACCESSION NUMBER:		0000066756-18-000066
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20180626
FILED AS OF DATE:		20180627
DATE AS OF CHANGE:		20180627

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Hoolihan James J
		CENTRAL INDEX KEY:			0001362514

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-03548
		FILM NUMBER:		18921884

	MAIL ADDRESS:	
		STREET 1:		30 WEST SUPERIOR STREET
		CITY:			DULUTH
		STATE:			MN
		ZIP:			55802-2093

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ALLETE INC
		CENTRAL INDEX KEY:			0000066756
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRIC & OTHER SERVICES COMBINED [4931]
		IRS NUMBER:				410418150
		STATE OF INCORPORATION:			MN
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		30 W SUPERIOR ST
		CITY:			DULUTH
		STATE:			MN
		ZIP:			55802-2093
		BUSINESS PHONE:		2182795000

	MAIL ADDRESS:	
		STREET 1:		30 W SUPERIOR STREET
		CITY:			DULUTH
		STATE:			MN
		ZIP:			55802-2093

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ALLETE
		DATE OF NAME CHANGE:	20000901

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MINNESOTA POWER INC
		DATE OF NAME CHANGE:	19980603

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MINNESOTA POWER & LIGHT CO
		DATE OF NAME CHANGE:	19920703
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2018-06-26</periodOfReport>

    <issuer>
        <issuerCik>0000066756</issuerCik>
        <issuerName>ALLETE INC</issuerName>
        <issuerTradingSymbol>ALE</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001362514</rptOwnerCik>
            <rptOwnerName>Hoolihan James J</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>917 4TH AVENUE NORTH WEST</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>GRAND RAPIDS</rptOwnerCity>
            <rptOwnerState>MN</rptOwnerState>
            <rptOwnerZipCode>55744</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2018-06-26</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>800</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>77.22</value>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>15181.12</value>
                    <footnoteId id="F3"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 22, 2018.</footnote>
        <footnote id="F2">The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $77.06-$77.29, inclusive. The reporting person undertakes to provide to ALLETE, any security holder of ALLETE, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range provided above.</footnote>
        <footnote id="F3">Includes shares acquired in exempt transactions pursuant to the dividend reinvestment feature of ALLETE's stock purchase and dividend reinvestment plan based on plan information available as of June 26, 2018. Also, includes shares acquired in exempt transactions under a broker-administered dividend reinvestment plan that is substantially similar to the dividend reinvestment feature of ALLETE's stock purchase and dividend reinvestment plan, based on plan information available as of June 26, 2018.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Ingrid K. Johnson for James J. Hoolihan</signatureName>
        <signatureDate>2018-06-27</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
