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 *
  Berardesco Charles A
 2. Date of Event Requiring Statement (Month/Day/Year)
10/21/2008		 3. Issuer Name and Ticker or Trading Symbol
CONSTELLATION ENERGY GROUP INC [CEG]
(Last)
(First)
(Middle)
100 CONSTELLATION WAY		 4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
General Counsel
 5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

BALTIMORE, MD 21202		 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 6
D
 
Common Stock 24.1597
I
By 401(k) Plan

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)   (1) 05/02/2013 Common Stock 2,960 $ 28.81 D  
Employee stock option (right to buy)   (2) 02/26/2014 Common Stock 5,890 $ 39.63 D  
Employee stock option (right to buy)   (3) 02/24/2015 Common Stock 6,880 $ 50.96 D  
Employee stock option (right to buy)   (4) 02/22/2017 Common Stock 5,910 $ 75.85 D  
Employee stock option (right to buy)   (5) 02/21/2018 Common Stock 6,660 $ 93.97 D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Berardesco Charles A
100 CONSTELLATION WAY
BALTIMORE, MD 21202		       General Counsel  

Signatures

Charles A. Berardesco 10/30/2008
**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) Option granted on 5/2/03 vested in three installments on 5/2/04, 5/2/05, and 5/2/06.
(2) Options granted on 2/26/04 vested in three installments on 2/26/05, 2/26/06, and 2/26/07.
(3) Options granted on 2/24/05 vested in three installments on 2/24/06, 2/24/07, and 2/24/08.
(4) Options granted on 2/22/07 will vest in three equal installments commencing on 2/22/08. The first installment vested on 2/22/08, and the second and third installments will vest on 2/22/09 and 2/22/10.
(5) Option granted on 2/21/08 will vest in three equal installments on 2/21/09, 2/21/10, and 2/21/11.

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