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Proc-Type: 2001,MIC-CLEAR
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<SEC-DOCUMENT>0000916863-07-000274.txt : 20070521
<SEC-HEADER>0000916863-07-000274.hdr.sgml : 20070521
<ACCEPTANCE-DATETIME>20070521171657
ACCESSION NUMBER:		0000916863-07-000274
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20070517
FILED AS OF DATE:		20070521
DATE AS OF CHANGE:		20070521

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			WEYERS LARRY L
		CENTRAL INDEX KEY:			0001186155

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-11337
		FILM NUMBER:		07868740

	BUSINESS ADDRESS:	
		STREET 1:		700 NORTH ADAMS STREET
		STREET 2:		P.O. BOX 19001
		CITY:			GREEN BAY
		STATE:			WI
		ZIP:			54307

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			INTEGRYS ENERGY GROUP, INC.
		CENTRAL INDEX KEY:			0000916863
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRIC & OTHER SERVICES COMBINED [4931]
		IRS NUMBER:				391775292
		STATE OF INCORPORATION:			WI
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		130 EAST RANDOLPH DRIVE
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60601
		BUSINESS PHONE:		800-699-1269

	MAIL ADDRESS:	
		STREET 1:		130 EAST RANDOLPH DRIVE
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60601

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Integrys Energy Group, Inc.
		DATE OF NAME CHANGE:	20070222

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	WPS RESOURCES CORP
		DATE OF NAME CHANGE:	19940103
</SEC-HEADER>
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        <issuerName>INTEGRYS ENERGY GROUP, INC.</issuerName>
        <issuerTradingSymbol>TEG</issuerTradingSymbol>
    </issuer>

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            <rptOwnerStreet2></rptOwnerStreet2>
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            <rptOwnerZipCode>60601</rptOwnerZipCode>
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            <isTenPercentOwner>0</isTenPercentOwner>
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    <footnotes>
        <footnote id="F1">Awarded under the Company's 2007 Omnibus Incentive Compensation Plan.  Awards of Restricted Stock were exempt from Section 16(b) pursuant to Rule 16b-3.</footnote>
        <footnote id="F2">The option vests in four equal annual installments beginning on May 17, 2008.</footnote>
        <footnote id="F3">The final number of shares issued will be based on company performance against an established industry benchmark for the performance period April 1, 2007, to December 31, 2009.</footnote>
        <footnote id="F4">The option vests in four equal annual installments beginning on December 13, 2002.</footnote>
        <footnote id="F5">The option vests in four equal annual installments beginning on December 12, 2003.</footnote>
        <footnote id="F6">The option vests in four equal annual installments beginning on December 10, 2004.</footnote>
        <footnote id="F7">The option vests in four equal annual installments beginning on December 8, 2005.</footnote>
        <footnote id="F8">The option vests in four equal annual installments beginning on December 7, 2007.</footnote>
        <footnote id="F9">The option vests in four equal annual installments beginning on December 7, 2006.</footnote>
        <footnote id="F10">Performance shares vest and are issued three years after the performance shares are awarded and the final number of shares issued is determined based on company performance against an established industry benchmark.</footnote>
        <footnote id="F11">Performance shares vest and are issued three years after the performance shares are awarded and the final number of shares issued is determined based on company performance against an established industry benchmark.</footnote>
        <footnote id="F12">These phantom stock units convert to common stock on a one-for-one basis.</footnote>
        <footnote id="F13">Unless the participant has selected a later commencement date, distribution of stock and equivalents will commence within 60 days following the end of the calendar year in which occurs the participant's retirement or termination of service.</footnote>
        <footnote id="F14">Unless the participant has selected a later commencement date, distribution of stock and equivalents will commence within 60 days following the end of the calendar year in which occurs the participant's retirement or termination of service.</footnote>
    </footnotes>

    <remarks>By ESOP - Reflects shares allocated by the company's ESOP program on March 30, 2007.</remarks>

    <ownerSignature>
        <signatureName>By: Peter H. Kauffman, as Power of Attorney  For: Mr. Weyers</signatureName>
        <signatureDate>2007-05-21</signatureDate>
    </ownerSignature>
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