<SEC-DOCUMENT>0000352541-18-000033-index.html : 20180315
<SEC-HEADER>0000352541-18-000033.hdr.sgml : 20180315
<ACCEPTANCE-DATETIME>20180315124255
ACCESSION NUMBER:		0000352541-18-000033
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20180309
ITEM INFORMATION:		Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers
ITEM INFORMATION:		Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year
ITEM INFORMATION:		Financial Statements and Exhibits
FILED AS OF DATE:		20180315
DATE AS OF CHANGE:		20180315

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:		8-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-09894
		FILM NUMBER:		18691738

	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

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			INTERSTATE POWER & LIGHT CO
		CENTRAL INDEX KEY:			0000052485
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRIC & OTHER SERVICES COMBINED [4931]
		IRS NUMBER:				420331370
		STATE OF INCORPORATION:			IA
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		8-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-04117
		FILM NUMBER:		18691740

	BUSINESS ADDRESS:	
		STREET 1:		200 FIRST ST SE
		STREET 2:		ALLIANT ENERGY TOWER
		CITY:			CEDAR RAPIDS
		STATE:			IA
		ZIP:			52401
		BUSINESS PHONE:		3193984411

	MAIL ADDRESS:	
		STREET 1:		200 FIRST ST SE
		STREET 2:		ALLIANT ENERGY TOWER
		CITY:			CEDAR RAPIDS
		STATE:			IA
		ZIP:			52401

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	IES UTILITIES INC
		DATE OF NAME CHANGE:	20020103

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	IES UTILITIES INC
		DATE OF NAME CHANGE:	19940107

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	IOWA ELECTRIC LIGHT & POWER CO
		DATE OF NAME CHANGE:	19920703

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			WISCONSIN POWER & LIGHT CO
		CENTRAL INDEX KEY:			0000107832
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRIC & OTHER SERVICES COMBINED [4931]
		IRS NUMBER:				390714890
		STATE OF INCORPORATION:			WI
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		8-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-00337
		FILM NUMBER:		18691739

	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 N BILTMORE LANE
		STREET 2:		SUITE 1000
		CITY:			MADISON
		STATE:			WI
		ZIP:			53718-2148
</SEC-HEADER>
<DOCUMENT>
<TYPE>8-K
<SEQUENCE>1
<FILENAME>lnt030920188-k.htm
<DESCRIPTION>8-K
<TEXT>
Document 1 - file: lnt030920188-k.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-3.1
<SEQUENCE>2
<FILENAME>lnt030920188-kexh31.htm
<DESCRIPTION>EXHIBIT 3.1
<TEXT>
Document 2 - file: lnt030920188-kexh31.htm

</DOCUMENT>
</SEC-DOCUMENT>