    <SEC-DOCUMENT>0001161728-23-000023-index.html : 20230329
    <SEC-HEADER>0001161728-23-000023.hdr.sgml : 20230329
    <ACCEPTANCE-DATETIME>20230329091322
    ACCESSION NUMBER:		0001161728-23-000023
    CONFORMED SUBMISSION TYPE:	DEFA14A
    PUBLIC DOCUMENT COUNT:		3
    FILED AS OF DATE:		20230329
    DATE AS OF CHANGE:		20230329

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			MGE ENERGY INC
    		CENTRAL INDEX KEY:			0001161728
    		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRIC, GAS & SANITARY SERVICES [4900]
    		IRS NUMBER:				392040501
    		STATE OF INCORPORATION:			WI
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		DEFA14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	000-49965
    		FILM NUMBER:		23772058

    	BUSINESS ADDRESS:
    		STREET 1:		133 SOUTH BLAIR STREET
    		STREET 2:		P.O. BOX 1231
    		CITY:			MADISON
    		STATE:			WI
    		ZIP:			53701-1231
    		BUSINESS PHONE:		(608) 252-7000

    	MAIL ADDRESS:
    		STREET 1:		133 SOUTH BLAIR STREET
    		STREET 2:		P.O. BOX 1231
    		CITY:			MADISON
    		STATE:			WI
    		ZIP:			53701-1231
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>DEFA14A
    <SEQUENCE>1
    <FILENAME>f20230329_defa_14a_notice.htm
    <DESCRIPTION>ADDITIONAL PROXY MATERIAL
    <TEXT>
    Document 1 - file: f20230329_defa_14a_notice.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>2
    <FILENAME>f20230329defa14anotice1.jpg
    <TEXT>
    Document 2 - file: f20230329defa14anotice1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>3
    <FILENAME>f20230329defa14anotice2.jpg
    <TEXT>
    Document 3 - file: f20230329defa14anotice2.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>