<SEC-DOCUMENT>0001127602-15-024774.txt : 20150812
<SEC-HEADER>0001127602-15-024774.hdr.sgml : 20150812
<ACCEPTANCE-DATETIME>20150812131938
ACCESSION NUMBER:		0001127602-15-024774
CONFORMED SUBMISSION TYPE:	3/A
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20150727
FILED AS OF DATE:		20150812
DATE AS OF CHANGE:		20150812

ISSUER:		

	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

	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

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			OTOOLE THOMAS F
		CENTRAL INDEX KEY:			0001061884

	FILING VALUES:
		FORM TYPE:		3/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-09894
		FILM NUMBER:		151046326

	MAIL ADDRESS:	
		STREET 1:		4902 NORTH BILTMORE LANE
		STREET 2:		PO BOX 14720
		CITY:			MADISON
		STATE:			WI
		ZIP:			53708-0720
</SEC-HEADER>
<DOCUMENT>
<TYPE>3/A
<SEQUENCE>1
<FILENAME>form3a.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0206</schemaVersion>

    <documentType>3/A</documentType>

    <periodOfReport>2015-07-27</periodOfReport>

    <dateOfOriginalSubmission>2015-08-03</dateOfOriginalSubmission>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0000352541</issuerCik>
        <issuerName>ALLIANT ENERGY CORP</issuerName>
        <issuerTradingSymbol>LNT</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001061884</rptOwnerCik>
            <rptOwnerName>OTOOLE THOMAS F</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>PO BOX 14720</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>MADISON</rptOwnerCity>
            <rptOwnerState>WI</rptOwnerState>
            <rptOwnerZipCode>53708-0720</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common In Street</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>100</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F1"/>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">This transaction is being re-reported solely to gain access to the reporting system to allow the filing of an amendment to include the power of attorney.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Amy L. Cralam, by Power of Attorney</signatureName>
        <signatureDate>2015-08-12</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>doc1.txt
<DESCRIPTION>POWER OF ATTORNEY (PUBLIC): OTOOLE POA
<TEXT>
POWER OF ATTORNEY

KNOW ALL PERSONS BY THESE PRESENTS, that the undersigned does hereby
constitute and appoint each of James H. Gallegos, Amy L. Cralam, and
Jake C. Blavat the true and lawful agents and attorneys-in-fact of the
undersigned, with respect to all matters arising in connection with the
undersigned?s reporting obligations under Section 16(a) of the
Securities Exchange Act of 1934 (the ?Exchange Act?) as amended,
and related rules and regulations, with full power and authority to
execute and deliver for and on behalf of the undersigned all
Securities and Exchange Commission Forms 3, 4, 5 and other documents
in connection therewith regarding Alliant Energy Corporation,
Interstate Power and Light Company, and
Wisconsin Power and Light Company (collectively, the ?Company?) securities,
as each of said agents and attorneys-in-fact may deem advisable.
The undersigned hereby gives each of said agents and attorneys-in-fact
full power and authority to act in the premises,
and hereby ratifies and confirms all that each of said agents
and attorneys-in-fact may do by virtue hereof.


The undersigned acknowledges that each attorney-in-fact,
in serving in such capacity at the request of the undersigned,
is not assuming any of the undersigned?s responsibilities to
comply with the Exchange Act.
The undersigned agrees to defend and hold harmless each
attorney-in-fact from and against any and all loss, damage
or liability that such attorney-in-fact may sustain as a result
of any action taken in good faith hereunder.

This Power of Attorney shall remain in full force and effect
until the undersigned is no longer required to file documents with respect
to the undersigned?s holdings of and transactions in securities
issued by the Company, unless earlier revoked
by the undersigned in writing or by
executing a new Power of Attorney.

IN WITNESS WHEREOF, I have executed this Power of Attorney
on this 27th day of July, 2015.

		/s/ Thomas F. O'Toole
		Thomas F. O'Toole
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
