<SEC-DOCUMENT>0001193125-17-370362-index.html : 20171215
<SEC-HEADER>0001193125-17-370362.hdr.sgml : 20171215
<ACCEPTANCE-DATETIME>20171215112906
ACCESSION NUMBER:		0001193125-17-370362
CONFORMED SUBMISSION TYPE:	S-3ASR
PUBLIC DOCUMENT COUNT:		16
FILED AS OF DATE:		20171215
DATE AS OF CHANGE:		20171215
EFFECTIVENESS DATE:		20171215

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:	333-222076
		FILM NUMBER:		171258096

	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:		S-3ASR
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-222076-02
		FILM NUMBER:		171258098

	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:		S-3ASR
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-222076-01
		FILM NUMBER:		171258097

	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>S-3ASR
<SEQUENCE>1
<FILENAME>d479314ds3asr.htm
<DESCRIPTION>S-3ASR
<TEXT>
Document 1 - file: d479314ds3asr.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-5.1
<SEQUENCE>2
<FILENAME>d479314dex51.htm
<DESCRIPTION>EX-5.1
<TEXT>
Document 2 - file: d479314dex51.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-5.2
<SEQUENCE>3
<FILENAME>d479314dex52.htm
<DESCRIPTION>EX-5.2
<TEXT>
Document 3 - file: d479314dex52.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-5.3
<SEQUENCE>4
<FILENAME>d479314dex53.htm
<DESCRIPTION>EX-5.3
<TEXT>
Document 4 - file: d479314dex53.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-5.4
<SEQUENCE>5
<FILENAME>d479314dex54.htm
<DESCRIPTION>EX-5.4
<TEXT>
Document 5 - file: d479314dex54.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-12.3
<SEQUENCE>6
<FILENAME>d479314dex123.htm
<DESCRIPTION>EX-12.3
<TEXT>
Document 6 - file: d479314dex123.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.5
<SEQUENCE>7
<FILENAME>d479314dex235.htm
<DESCRIPTION>EX-23.5
<TEXT>
Document 7 - file: d479314dex235.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.6
<SEQUENCE>8
<FILENAME>d479314dex236.htm
<DESCRIPTION>EX-23.6
<TEXT>
Document 8 - file: d479314dex236.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.7
<SEQUENCE>9
<FILENAME>d479314dex237.htm
<DESCRIPTION>EX-23.7
<TEXT>
Document 9 - file: d479314dex237.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24.1
<SEQUENCE>10
<FILENAME>d479314dex241.htm
<DESCRIPTION>EX-24.1
<TEXT>
Document 10 - file: d479314dex241.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24.2
<SEQUENCE>11
<FILENAME>d479314dex242.htm
<DESCRIPTION>EX-24.2
<TEXT>
Document 11 - file: d479314dex242.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24.3
<SEQUENCE>12
<FILENAME>d479314dex243.htm
<DESCRIPTION>EX-24.3
<TEXT>
Document 12 - file: d479314dex243.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-25.1
<SEQUENCE>13
<FILENAME>d479314dex251.htm
<DESCRIPTION>EX-25.1
<TEXT>
Document 13 - file: d479314dex251.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-25.2
<SEQUENCE>14
<FILENAME>d479314dex252.htm
<DESCRIPTION>EX-25.2
<TEXT>
Document 14 - file: d479314dex252.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-25.3
<SEQUENCE>15
<FILENAME>d479314dex253.htm
<DESCRIPTION>EX-25.3
<TEXT>
Document 15 - file: d479314dex253.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>16
<FILENAME>g479314page2.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 16 - file: g479314page2.jpg

</DOCUMENT>
</SEC-DOCUMENT>