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SunPower to Announce First-Quarter Results on April 20, 2006
Conference Call to be Webcast at: http://investors.sunpowercorp.com

SUNNYVALE, Calif., Apr. 6, 2006  /PRNewswire/ -- SunPower Corp. (NASDAQ: SPWR) will announce its first-quarter earnings in a conference call on Thursday, April 20th at 10:30 a.m. Pacific time.

All interested parties are requested to contact 408-470-4287 no later than April 18th, 2006, to reserve a position for the quarterly conference call. The event will also be broadcast over the Internet and can be accessed through SunPower's web site at http://investors.sunpowercorp.com/ .

Full text of the press release and supplemental financial information will be made available on the SunPower web site on the morning of the conference call.

About SunPower Corp.

SunPower Corp. designs and manufactures high-efficiency silicon solar cells and solar panels based on an all-back contact cell design. SunPower's solar cells and panels generate up to 50 percent more power per unit area than conventional solar technologies and have a uniquely attractive, all-black appearance. For more information on SunPower or solar technology, please visit the SunPower website at http://www.sunpowercorp.com/ . SunPower is a majority owned subsidiary of Cypress Semiconductor Corp. (NYSE: CY).

NOTE: SunPower is a registered trademark of SunPower Corp. Cypress is a registered trademark of Cypress Semiconductor Corp. All other trademarks are the property of their respective owners.

SOURCE: SunPower Corp.

CONTACT: Julie Blunden, Vice President, External Affairs,

Web site: http://www.sunpowercorp.com/