<SEC-DOCUMENT>0000352541-20-000076-index.html : 20200618
<SEC-HEADER>0000352541-20-000076.hdr.sgml : 20200618
<ACCEPTANCE-DATETIME>20200618171602
ACCESSION NUMBER:		0000352541-20-000076
CONFORMED SUBMISSION TYPE:	11-K
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20191231
FILED AS OF DATE:		20200618
DATE AS OF CHANGE:		20200618

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:		11-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-09894
		FILM NUMBER:		20973527

	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>11-K
<SEQUENCE>1
<FILENAME>lnt1231201911-k.htm
<DESCRIPTION>11-K
<TEXT>
Document 1 - file: lnt1231201911-k.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23
<SEQUENCE>2
<FILENAME>lnt1231201911-kexh23.htm
<DESCRIPTION>EXHIBIT 23
<TEXT>
Document 2 - file: lnt1231201911-kexh23.htm

</DOCUMENT>
</SEC-DOCUMENT>