Ownership Submission
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 *
  SAC CAPITAL ADVISORS LLC
 2. Date of Event Requiring Statement (Month/Day/Year)
01/26/2006		 3. Issuer Name and Ticker or Trading Symbol
SUNPOWER CORP [SPWR]
(Last)
(First)
(Middle)
72 CUMMINGS POINT ROAD, 		 4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director __X__ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

STAMFORD, CT 06902		 6. Individual or Joint/Group Filing(Check Applicable Line)
___ Form filed by One Reporting Person
_X_ 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)
Class A Common Stock, par value $0.001 per share 392,490
I (1)
See Footnote (2)

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
Call (right to buy) 01/25/2006 03/18/2006 Class A Common Stock 500,000 $ 40 I (1) See Footnote (2)

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
SAC CAPITAL ADVISORS LLC
72 CUMMINGS POINT ROAD
STAMFORD, CT 06902		     X    
S A C CAPITAL MANAGEMENT L L C
C/O 72 CUMMINGS POINT ROAD
STAMFORD, CT 06902		     X    
COHEN STEVEN A/SAC CAPITAL MGMT LP
C/O SAC CAPITAL ADVISORS LLC
72 CUMMINGS POINT ROAD
STAMFORD, CT 06902		     X    

Signatures

Peter Nussbaum 02/03/2006
**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) S.A.C. Capital Associates, LLC ("Associates"), C.R. Intrinsic Investments, LLC ("Intrinsic"), S.A.C. MultiQuant Fund, LLC ("MultiQuant") and S.A.C. Select Fund, LLC ("Select"), each an Anguillan limited liability company, directly each own Class A Common Stock of the Issuer. At 11: 56 a.m., Eastern Standard Time, on January 26, 2006, each Reporting Person had indirect beneficial ownership of 892,490 shares of Class A Common Stock of the Issuer. For purposes of this filing, the Reporting Persons have calculated the aggregate number of outstanding shares of the Issuer's Class A Common Stock as 8,906,652, based on the Form 8-K, dated January 26, 2005, which reported 8,830,000 then outstanding shares, and the prospectus of the Issuer, dated November 16, 2005, which reported an additional 76,652 shares outstanding.
(2) See Footenote (2) under "Remarks".
 
Remarks:
Peter Nussbaum, as Authorized Person on behalf of the following:
S.A.C. CAPITAL ADVISORS, LLC
S.A.C. CAPITAL MANAGEMENT, LLC
STEVEN A. COHEN

Footnote (2)  The securities to which this report relates are held by Associates, Intrinsic, MultiQuant and Select.  S.A.C.
 Capital Advisors, LLC ("Advisors") and S.A.C. Capital Management, LLC ("Management") are investment managers to Associates,
 Intrinsic, MultiQuant and Select.  Pursuant to investment agreements, each of Advisors and Management share all investment
 and voting power with respect to the securities held by Associates, Intrinsic, MultiQuant and Select.  Steven A. Cohen
 controls each of Advisors and Management.  In accordance with Instruction 5(b)(iv), the entire amount of the Issuer's
 securities held by Associates, Intrinsic, MultiQuant and Select is reported herein.  Each Reporting Person disclaims any
 beneficial ownership of any of the Issuer's securities to which this report relates for purposes of Section 16 of the
 Securities Exchange Act of 1934, as amended, except to the extent of its indirect pecuniary interest therein, and this
 report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of
 Section 16 or for any other purposes.

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