<SEC-DOCUMENT>0001193125-17-333165-index.html : 20171106
<SEC-HEADER>0001193125-17-333165.hdr.sgml : 20171106
<ACCEPTANCE-DATETIME>20171103192700
ACCESSION NUMBER:		0001193125-17-333165
CONFORMED SUBMISSION TYPE:	S-3ASR
PUBLIC DOCUMENT COUNT:		6
FILED AS OF DATE:		20171106
DATE AS OF CHANGE:		20171103
EFFECTIVENESS DATE:		20171106

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ALLIANT ENERGY CORP
		CENTRAL INDEX KEY:			0000352541
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRIC & OTHER SERVICES COMBINED [4931]
		IRS NUMBER:				391380265
		STATE OF INCORPORATION:			WI
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		S-3ASR
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-221355
		FILM NUMBER:		171177935

	BUSINESS ADDRESS:	
		STREET 1:		4902 NORTH BILTMORE LANE
		STREET 2:		SUITE 1000
		CITY:			MADISON
		STATE:			WI
		ZIP:			53718-2148
		BUSINESS PHONE:		608-458-3311

	MAIL ADDRESS:	
		STREET 1:		4902 NORTH BILTMORE LANE
		STREET 2:		SUITE 1000
		CITY:			MADISON
		STATE:			WI
		ZIP:			53718-2148

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	INTERSTATE ENERGY CORP
		DATE OF NAME CHANGE:	19980427

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	WPL HOLDINGS INC
		DATE OF NAME CHANGE:	19920703
</SEC-HEADER>
<DOCUMENT>
<TYPE>S-3ASR
<SEQUENCE>1
<FILENAME>d479135ds3asr.htm
<DESCRIPTION>S-3ASR
<TEXT>
Document 1 - file: d479135ds3asr.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-5.1
<SEQUENCE>2
<FILENAME>d479135dex51.htm
<DESCRIPTION>EX-5.1
<TEXT>
Document 2 - file: d479135dex51.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.2
<SEQUENCE>3
<FILENAME>d479135dex232.htm
<DESCRIPTION>EX-23.2
<TEXT>
Document 3 - file: d479135dex232.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24.1
<SEQUENCE>4
<FILENAME>d479135dex241.htm
<DESCRIPTION>EX-24.1
<TEXT>
Document 4 - file: d479135dex241.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>g479135bc.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 5 - file: g479135bc.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>6
<FILENAME>g479135cov.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 6 - file: g479135cov.jpg

</DOCUMENT>
</SEC-DOCUMENT>