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 *   DINKEL PATRICK 2. Date of Event Requiring Statement (Month/Day/Year) 05/18/2011 3. Issuer Name and Ticker or Trading Symbol PINNACLE WEST CAPITAL CORP [PNW] (Last) (First) (Middle) 400 N. FIFTH STREET 4. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner _____ Officer (give title below) __X__ Other (specify below) VP, Pwr Mrktg, Res Plan & Acq. 5. If Amendment, Date Original Filed(Month/Day/Year) (Street) PHOENIX, AZ 85004 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 1,389 D   Common Stock 74 I by 401(k)

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
Restricted Stock Units	  (1)	  (1)	Common Stock	200	$ (2)	D	Â
Restricted Stock Units	  (3)	  (3)	Common Stock	400	$ (2)	D	Â
Resticted Stock Units	  (4)	  (4)	Common Stock	1,698	$ (5)	D	Â
Restricted Stock Units	  (6)	  (6)	Common Stock	2,040	$ (5)	D	Â
Restricted Stock Units	  (7)	  (7)	Common Stock	2,400	$ (8)	D	Â

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
DINKEL PATRICK 400 N. FIFTH STREET PHOENIX, AZ 85004	Â	Â	Â	VP, Pwr Mrktg, Res Plan & Acq.

Signatures

/s/ Diane Wood, Attorney-in-Fact		05/25/2011
**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)	The Restricted Stock Units vest and will be settled on February 17, 2012.
(2)	Each Restricted Stock Unit is the economic equivalent of one share of the Company's common stock. The Restricted Stock Units will be settled, at the reporting person's election, in shares of comon stock or cash.
(3)	The Restricted Stock Units vest and will be settled as follows: 200 will vest on each of February 17, 2012 and February 20, 2013.
(4)	The Restricted Stock Units vest and will be settled as follows: 566 vest on each of February 17, 2012, February 20, 2013 and February 20, 2014.
(5)	Each Restricted Stock Unit is the economic equivalent of one share of the Company's common stock. The Restricted Stock units will be settled, at the reporting person's election, in shares of common stock or 50% cash and 50% common stock.
(6)	The Restricted Stock Units vest and will be settled in four equal, annual installments beginning on February 17, 2012 and thereafter on February 20 of each following year.
(7)	The Restricted Stock Units will vest 50% on February 15, 2013, 25% on February 15, 2014 and 25% on February 15, 2015, and will be released to the reporting person upon his retirement or other separation from the Company.
(8)	Each Restricted Stock Unit is the economic equivalent of one share of the Company's common stock. The Restricted Stock Units will be settled in shares of common stock.
  Remarks: Exhibit 24 - Power of Attorney

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