UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A INFORMATION

Proxy Statement Pursuant to Section 14(a) of the

Securities Exchange Act of 1934

(Amendment No.     )

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¨ Preliminary Proxy Statement

¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

¨ Definitive Proxy Statement

x Definitive Additional Materials

¨ Soliciting Material under §240.14a-12

Integrys Energy Group, Inc.

(Name of registrant as specified in its charter)

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(Name of person(s) filing proxy statement, if other than the registrant)

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*** Exercise Your Right to Vote ***

Important Notice Regarding the Availability of Proxy Materials for the

Shareholder Meeting to Be Held on May 16, 2013

		Meeting Information
	INTEGRYS ENERGY GROUP, INC.	Meeting Type:          Annual Meeting
		For holders as of:    March 12, 2013
		Date:    May 16, 2013        Time:   10:00 AM, CDT
		Location:	Weidner Center
	INTEGRYS ENERGY GROUP, INC. ATTN: INVESTOR RELATIONS 130 EAST RANDOLPH STREET CHICAGO, IL 60601		Campus of the University of Wisconsin – Green Bay 2420 Nicolet Drive Green Bay, Wisconsin
		You are receiving this communication because you hold shares in the company named above. This is not a proxy or ballot. You cannot use this notice to vote these shares. This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. You may view the proxy materials online at www.proxyvote.com or easily request a paper copy (see reverse side). We encourage you to access and review all of the important information contained in the proxy materials before voting.
		See the reverse side of this notice to obtain   proxy materials and voting instructions.

Before You Vote  

How to Access the Proxy Materials

Proxy Materials Available to VIEW or RECEIVE:

PROXY STATEMENT        ANNUAL REPORT        

How to View Online:

Have the information that is printed in the box marked by the arrow (located on page 3) and visit: www.proxyvote.com.

How to Request and Receive a PAPER or E-MAIL Copy:

If you want to receive a paper or e-mail copy of these documents, you must request one. There is NO charge for requesting a copy. Please choose one of the following methods to make your request:

                               1) BY INTERNET:         www.proxyvote.com

                               2) BY TELEPHONE:     1-800-579-1639

                               3) BY E-MAIL*:             sendmaterial@proxyvote.com

*    If requesting materials by e-mail, please send a blank e-mail with the information that is printed in the box marked by the arrow (located on page 3) in the subject line.

Requests, instructions and other inquiries sent to this e-mail address will NOT be forwarded to an investment advisor. Please make the request as instructed above on or before May 2, 2013 to facilitate timely delivery of proxy materials. Issues with requesting proxy materials may be directed to Integrys Investor Relations at 800-228-6888.

How To Vote  

Please Choose One of the Following Voting Methods

    Vote In Person: Instructions on how to attend the meeting and vote in person are available in the “Frequently Asked Questions” section of the proxy statement. Please check the proxy materials for any special requirements for meeting attendance. At the meeting, you will need to request a ballot to vote these shares in person.   Vote By Internet: To vote now by Internet, go to www.proxyvote.com. Have the information that is printed in the box marked by the arrow (located on page 3) available and follow the instructions.   Vote By Mail: You can vote by mail by requesting a paper copy of the materials, which will include a proxy card. A paper copy of materials must be requested in order to submit topics to be addressed at the annual meeting and for address changes.

Voting Items
The Board of Directors recommends you vote FOR ALL of the nominees listed below:
1.     Election of Directors
Nominees:
01)	William J. Brodsky	07)	Paul W. Jones
02)	Albert J. Budney, Jr.	08)	Holly Keller Koeppel
03)	Ellen Carnahan	09)	Michael E. Lavin
04)	Michelle L. Collins	10)	William F. Protz, Jr.
05)	Kathryn M. Hasselblad-Pascale	11)	Charles A. Schrock
06)	John W. Higgins
The Board of Directors recommends you vote FOR the following proposals:
2.     The approval of a non-binding advisory resolution to approve the compensation of our named executive officers.
3.     The ratification of the selection of Deloitte & Touche LLP as the independent registered public accounting firm for Integrys Energy Group and its subsidiaries for 2013.
NOTE: In their discretion, the proxies are authorized to vote upon such other business as may properly come before the meeting or any adjournment thereof.