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 *
  Trehan Rita
2. Date of Event Requiring Statement (Month/Day/Year)
10/07/2011
3. Issuer Name and Ticker or Trading Symbol
AES CORP [AES]
(Last)
(First)
(Middle)
4300 WILSON BOULEVARD
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Vice President Human Resources
5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

ARLINGTON, VA 22203
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 14,151 (1)
D
 

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)   (2) 09/08/2013 Common Stock 1,847 $ 7.19 D  
Employee Stock Option (Right to Buy)   (2) 02/04/2014 Common Stock 4,873 $ 8.97 D  
Employee Stock Option (Right to Buy)   (2) 02/25/2015 Common Stock 4,355 $ 16.81 D  
Employee Stock Option (Right to Buy)   (2) 02/24/2016 Common Stock 6,361 $ 17.58 D  
Employee Stock Option (Right to Buy)   (2) 02/23/2017 Common Stock 5,285 $ 22.28 D  
Employee Stock Option (Right to Buy)   (2) 02/22/2018 Common Stock 8,170 $ 18.87 D  
Employee Stock Option (Right to Buy)   (3) 02/20/2019 Common Stock 24,917 $ 6.71 D  
Employee Stock Option (Right to Buy)   (4) 02/19/2020 Common Stock 13,979 $ 12.18 D  
Employee Stock Option (Right to Buy)   (5) 02/18/2021 Common Stock 26,087 $ 12.88 D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Trehan Rita
4300 WILSON BOULEVARD
ARLINGTON, VA 22203
      Vice President Human Resources  

Signatures

Rita Trehan 10/17/2011
**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) This amount represents three separate restricted stock unit awards ("RSUs") which were granted pursuant to the AES Corporation 2003 Long Term Compensation Plan. Vesting for all three awards occurs in three equal annual installments if certain continuing employment conditions are satisfied. If such conditions are satisfied, each RSU entitles the holder to one share of AES Common Stock for each RSU granted. Included are awards granted on February 23, 2007 (2,412 shares), February 22, 2008 (3,975 shares), and February 18, 2011 (7,764 shares).
(2) Fully exercisable.
(3) These stock options vest in three equal annual installments. The first installment became exercisable on February 20, 2010; the next installment became exercisable on February 20, 2011, and the final installment will become exercisable on February 20, 2012.
(4) These stock options vest in three equal annual installments. The first installment became exercisable on February 19, 2011, and the next two installments will become exercisable on February 19, 2012 and February 19, 2013, respectively.
(5) These stock options vest in three equal annual installments. The first installment will become exercisable on February 18, 2012, and the next two installments will become exercisable on February 18, 2013 and February 18, 2014, respectively.

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