SEC FORM 4

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person^*

Park Hyun

(Last)

(First)

(Middle)

C/O ALLEGHENY ENERGY, INC.

800 CABIN HILL DRIVE

(Street)

GREENSBURG

15601

(City)

(State)

(Zip)

2. Issuer Name and Ticker or Trading Symbol
ALLEGHENY ENERGY, INC [ AYE ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	Vice Pres. & General Counsel

3. Date of Earliest Transaction (Month/Day/Year)
04/05/2006

4. If Amendment, Date of 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

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock, $1.25 par value per share	04/05/2006		M		10,000⁽¹⁾	A	$34.355⁽²⁾	10,000	D
Common Stock, $1.25 par value per share	04/05/2006		F		3,389⁽³⁾	D	$34.355⁽²⁾	6,611	D

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 Securities Underlying Derivative Security (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: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Stock Units	⁽⁴⁾	04/05/2006		M			10,000	⁽⁴⁾	⁽⁴⁾	Common Stock	10,000	⁽⁴⁾	40,000	D

Explanation of Responses:

1. Represents shares of the Issuer's Common Stock issued to Mr. Park in connection with the vesting of Stock Units.

2. Calculated based on the average of the high and low sales prices for a share of the Issuer's Common Stock on the New York Stock Exchange on April 5, 2006.

3. Shares of the Issuer's Common Stock withheld as payment for required minimum federal, state and local tax withholdings.

4. Mr. Park was granted 50,000 Stock Units on April 5, 2005. One-fifth of the Stock Units vested on April 5, 2006. The remaining Stock Units will vest in equal installments on each April 5 from 2007 through 2010, provided that Mr. Park is an employee of the Issuer on the applicable vesting date. The Issuer pays holders of Stock Units the full value of each vested Stock Unit on each applicable vesting date in stock, subject to the holder's election to defer payments, if any.

	/s/ Amanda J. Skov, Attorney-in-Fact	04/07/2006
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* 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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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