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    <ACCEPTANCE-DATETIME>20240506075203
    ACCESSION NUMBER:		0000066756-24-000034
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		21
    CONFORMED PERIOD OF REPORT:	20240505
    ITEM INFORMATION:		Entry into a Material Definitive Agreement
    ITEM INFORMATION:		Regulation FD Disclosure
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20240506
    DATE AS OF CHANGE:		20240506

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			ALLETE INC
    		CENTRAL INDEX KEY:			0000066756
    		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRIC & OTHER SERVICES COMBINED [4931]
    		ORGANIZATION NAME:           	01 Energy & Transportation
    		IRS NUMBER:				410418150
    		STATE OF INCORPORATION:			MN
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-03548
    		FILM NUMBER:		24915631

    	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>
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    <SEQUENCE>1
    <FILENAME>ale-20240505.htm
    <DESCRIPTION>8-K
    <TEXT>
    Document 1 - file: ale-20240505.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-2.1
    <SEQUENCE>2
    <FILENAME>exhibit21.htm
    <DESCRIPTION>EX-2.1
    <TEXT>
    Document 2 - file: exhibit21.htm

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    <DOCUMENT>
    <TYPE>EX-99.1
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    <FILENAME>exhibit991.htm
    <DESCRIPTION>EX-99.1
    <TEXT>
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    <SEQUENCE>12
    <FILENAME>imagea.jpg
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    <TYPE>EXCEL
    <SEQUENCE>15
    <FILENAME>Financial_Report.xlsx
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    <SEQUENCE>16
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    <SEQUENCE>17
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    <TEXT>
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    <TYPE>XML
    <SEQUENCE>19
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    <TYPE>JSON
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