Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN 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 *
ALEXANDER ANTHONY J
  2. Issuer Name and Ticker or Trading Symbol
FIRSTENERGY CORP [FE]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Pres. & Chief Exec. Officer
(Last)
(First)
(Middle)
76 SOUTH MAIN STREET
3. Date of Earliest Transaction (Month/Day/Year)
03/21/2007
(Street)

AKRON, OH 44308
4. If Amendment, Date Original Filed(Month/Day/Year)
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 Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)
2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)
4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)
5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)
6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)
7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 03/21/2007   F   4,577 (1) D $ 64.44 166,279.269 D  
Common Stock               18,007.379 I by Savings Plan Trust

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)
2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)
5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)
6. Date Exercisable and Expiration Date
(Month/Day/Year)
7. Title and Amount of Underlying Securities
(Instr. 3 and 4)
8. Price of Derivative Security
(Instr. 5)
9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)
10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)
11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Phantom / Retirement $ 1               (2)   (2) Common Stock 14,456.078   14,456.078 D  
Phantom 3/07D $ 1             03/01/2007 03/01/2010 Common Stock 19,144.86   19,144.86 D  
RSUP1 $ 1             03/01/2008 03/01/2008 Common Stock 38,119.44   38,119.44 D  
RSUP4 $ 1             03/01/2009 03/01/2009 Common Stock 36,328.043   36,328.043 D  
RSUP6 $ 1             03/01/2010 03/01/2010 Common Stock 29,493   29,493 D  
Stock Options (Right to buy) $ 29.71             03/01/2004 03/03/2013 Common Stock 80,450   80,450 D  
Stock Options (Right to buy) $ 34.45             04/01/2003 04/01/2012 Common Stock 90,000   90,000 D  
Stock Options (Right to buy) $ 38.76             03/01/2005 03/01/2014 Common Stock 257,100   257,100 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
ALEXANDER ANTHONY J
76 SOUTH MAIN STREET
AKRON, OH 44308
      Pres. & Chief Exec. Officer  

Signatures

 David W. Whitehead, POA   03/21/2007
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(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).
(2) This transaction reflects the extension and vesting of phantom stock to retirement or other termination of employment under arrangements approved by the Compensation Committee.
(1) On February 20, 2007, the Board authorized the payout of the 2004 grant of performance shares, no earlier than February 23, 2007. Per the Board resolution, Mr. Alexander was entitled to receive a portion of his long term payout in cash and $536,266 converted to shares. The shares are to be 100% vested as of March 21, 2007 and purchased in full on that date. In accordance with the Board resolution, on the March 21, 2007 payout date, shares will be withheld from this grant and sold on the open market to cover Mr. Alexander's tax obligation.

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