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 *
Richards Douglas J.
  2. Issuer Name and Ticker or Trading Symbol
SUNPOWER CORP [SPWR]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
VP, HR and Corporate Services
(Last)
(First)
(Middle)
C/O SUNPOWER CORPORATION, 3939 NORTH FIRST STREET
3. Date of Earliest Transaction (Month/Day/Year)
09/11/2008
(Street)

SAN JOSE, CA 95134
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
Class A Common Stock 09/11/2008   M   6,250 A $ 0 6,250 D  
Class A Common Stock 09/11/2008   F   2,235 D $ 80.17 4,015 D  
Class A Common Stock 09/11/2008(1)   S   3,025 D $ 79.1331 (2) 990 D  
Class A Common Stock 09/11/2008(1)   S   100 D $ 80.12 890 D  

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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
Restricted Stock Units (3) 09/11/2008   M     6,250   (4)   (4) Class A Common Stock 6,250 $ 0 18,750 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
Richards Douglas J.
C/O SUNPOWER CORPORATION
3939 NORTH FIRST STREET
SAN JOSE, CA 95134
      VP, HR and Corporate Services  

Signatures

 Donald T. Rozak, Jr, CP, as attorney-in-fact for Douglas J. Richards   09/15/2008
**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).
(1) The sales reported on this Form 4 were effected pursuant to a previously adopted rule 10b5-1 trading plan by the reporting person.
(2) Price reflects weighted average sales price; actual sales prices ranged from $79.08 to $79.72. The reporting person undertakes to provide, upon request by the Commission Staff, the Issuer, or a Security Holder of the Issuer, full information regarding the number of shares purchased or sold at each separate price.
(3) Each restricted stock unit represents a contingent right to receive one share of SunPower's Class A Common Stock.
(4) 1/4th of the restricted stock units shall vest on each anniversary of Mr. Richards' employment start date, which was 9/11/07, until fully vested.

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