Ownership Submission
FORM 3
 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
  Brevnov Boris A
 2. Date of Event Requiring Statement (Month/Day/Year)
02/21/2007		 3. Issuer Name and Ticker or Trading Symbol
INTEGRYS ENERGY GROUP, INC. [TEG]
(Last)
(First)
(Middle)
130 E. RANDOLPH DRIVE		 4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Vice President - Development
 5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

CHICAGO, IL 60601		 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Beneficially Owned
1.Title of Security
(Instr. 4)		 2. Amount of Securities Beneficially Owned
(Instr. 4)		 3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5)		 4. Nature of Indirect Beneficial Ownership
(Instr. 5)
Common Stock 380
D
 
Common Stock 680.7512
I
By ESOP

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 4)		 2. Date Exercisable and Expiration Date
(Month/Day/Year)		 3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)		 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)		 6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Employee Stock Option (Right to buy) 04/11/2003 04/11/2012 Common Stock 5,000 $ 41.29 (1) D  
Employee Stock Option (Right to buy) 12/10/2004 12/10/2013 Common Stock 750 $ 44.73 (2) D  
Employee Stock Option (Right to buy) 12/07/2007 12/07/2016 Common Stock 7,826 $ 52.73 (3) D  
Performance Rights 01/01/2008(4) 06/30/2008 Common Stock 300 $ 0 (5) D  
Performance Rights 01/01/2009(4) 06/30/2009 Common Stock 700 $ 0 (5) D  
Performance Rights 01/01/2010(4) 06/30/2010 Common Stock 1,010 $ 0 (5) D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Brevnov Boris A
130 E. RANDOLPH DRIVE
CHICAGO, IL 60601		       Vice President - Development  

Signatures

By: Peter H. Kauffman, as Power of Attorney For: Boris A. Brevnov 02/23/2007
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 5(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) The option vests in four equal annual installments beginning on April 11, 2003.
(2) The option vests in four equal annual installments beginning on December 10, 2004.
(3) The option vests in four equal annual installments beginning on December 7, 2007.
(4) 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.
(5) 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.

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