<SEC-DOCUMENT>0001104659-21-039970-index.html : 20210323
<SEC-HEADER>0001104659-21-039970.hdr.sgml : 20210323
<ACCEPTANCE-DATETIME>20210323060842
ACCESSION NUMBER:		0001104659-21-039970
CONFORMED SUBMISSION TYPE:	DEFA14C
PUBLIC DOCUMENT COUNT:		5
FILED AS OF DATE:		20210323
DATE AS OF CHANGE:		20210323

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Ameren Illinois Co
		CENTRAL INDEX KEY:			0000018654
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRIC & OTHER SERVICES COMBINED [4931]
		IRS NUMBER:				370211380
		STATE OF INCORPORATION:			IL
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		DEFA14C
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-03672
		FILM NUMBER:		21763080

	BUSINESS ADDRESS:	
		STREET 1:		10 EXECUTIVE DRIVE
		CITY:			COLLINSVILLE
		STATE:			IL
		ZIP:			62234
		BUSINESS PHONE:		618-343-8150

	MAIL ADDRESS:	
		STREET 1:		10 EXECUTIVE DRIVE
		CITY:			COLLINSVILLE
		STATE:			IL
		ZIP:			62234

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	CENTRAL ILLINOIS PUBLIC SERVICE CO
		DATE OF NAME CHANGE:	19920703
</SEC-HEADER>
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<TYPE>DEFA14C
<SEQUENCE>1
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<DESCRIPTION>DEFA14C
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Document 1 - file: tm216254d3_defa14c.htm

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Document 2 - file: tm216254d3_defa14aimg01.jpg

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<SEQUENCE>3
<FILENAME>tm216254d3_defa14aimg02.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: tm216254d3_defa14aimg02.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>tm216254d3_defa14aimg03.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: tm216254d3_defa14aimg03.jpg

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>tm216254d3_defa14aimg04.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 5 - file: tm216254d3_defa14aimg04.jpg

</DOCUMENT>
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