Definitive Additional Materials

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

 

SCHEDULE 14A

(Rule 14a-101)

Proxy Statement Pursuant to Section 14(a) of the

Securities Exchange Act of 1934

(Amendment No.      )

 

Filed by the Registrant x                            Filed by a Party other than the Registrant ¨

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¨ Preliminary Proxy Statement

 

¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

 

¨ Definitive Proxy Statement

 

x Definitive Additional Materials

 

¨ Soliciting Material Pursuant to §240.14a-12

 

 

SUNPOWER CORPORATION

 

(Name of Registrant as Specified In Its Charter)

 

 

  

 

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*** Exercise Your Right to Vote ***

Notice of Internet Availability of Proxy Materials

SUNPOWER

SUNPOWER CORPORATION

3939 NORTH FIRST STREET

SAN JOSE, CA 95134

Meeting Information

Meeting Type:

Annual

For holders as of:

3/10/09

Date:

5/8/09

Time:

12:00 p.m. PDT

Location:

Cypress Semiconductor Corporation 198 Champion Court San Jose, CA 95134

You are receiving this communication because you hold shares in the company named above.

This is not a ballot. You cannot use this notice to vote these shares. This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. You may view the proxy materials online at www.proxyvote.com or easily request a paper copy (see reverse side).

We encourage you to access and review all of the important information contained in the proxy materials before voting.

See the reverse side of this notice to obtain proxy materials and voting instructions.

R1SUN1


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Before You Vote

How to Access the Proxy Materials

Proxy Materials Available to VIEW or RECEIVE:

NOTICE AND PROXY STATEMENT ANNUAL REPORT

How to View Online:

Have the 12-Digit Control Number available (located on the following page) and visit: www.proxyvote.com.

How to Request and Receive a PAPER or E-MAIL Copy:

If you want to receive a paper or e-mail copy of these documents, you must request one. There is NO charge for requesting a copy. Please choose one of the following methods to make your request:

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2) BY TELEPHONE: 1-800-579-1639

3) BY E-MAIL*: sendmaterial@proxyvote.com

* If requesting materials by e-mail, please send a blank e-mail with the 12-Digit Control Number (located on the following page) in the subject line.

Requests, instructions and other inquiries sent to this e-mail address will NOT be forwarded to your investment advisor. To facilitate timely delivery, please make the request as instructed above on or before 4/24/09.

How To Vote

Please Choose One of the Following Voting Methods

Vote In Person: Many stockholder meetings have attendance requirements including, but not limited to, the possession of an attendance ticket issued by the entity holding the meeting. Please check the meeting materials for any special requirements for meeting attendance. At the meeting, you will need to request a ballot to vote these shares.

Vote By Internet: To vote now by Internet, go to www.proxyvote.com. Have the 12-Digit Control Number available and follow the instructions.

Vote By Mail or Telephone: You can vote by mail by requesting a paper copy of the proxy materials as set forth above in “How to Request and Receive a PAPER or E-MAIL Copy” and then following the “Vote by Mail” instructions in the proxy materials. Alternatively, you can vote by telephone by reviewing the proxy materials via the Internet at www.proxyvote.com or requesting a paper copy of the proxy materials and then following the “Vote by Telephone” instructions in the proxy materials.

R1SUN2


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Voting Items

THE BOARD OF DIRECTORS RECOMMENDS A VOTE FOR PROPOSALS 1 AND 2 BELOW:

1. PROPOSAL TO RE-ELECT CLASS I DIRECTORS:

Nominees:

01) UWE-ERNST BUFE 02) PAT WOOD III

2. PROPOSAL TO RATIFY THE APPOINTMENT OF PRICEWATERHOUSECOOPERS LLP AS THE INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM OF THE COMPANY FOR FISCAL YEAR 2009.

In their discretion, the proxies are authorized to vote upon such other matter or matters which may properly come before the meeting or any adjournment or postponement thereof.

R1SUN3


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R1SUN4