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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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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