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SunPower Earns IEC 61730 Safety Standards Certificate from TUV
First Company Worldwide to Receive the New International Rating for Its Solar Panels
SAN JOSE, Calif.

SAN JOSE, Calif., Jul. 11, 2007  /PRNewswire/ -- SunPower Corporation (NASDAQ: SPWR), a Silicon Valley-based manufacturer of high-efficiency solar cells, solar panels and solar systems, today announced that it is the first solar panel manufacturer worldwide to qualify for and receive the new International Electrotechnical Commission (IEC) 61730 safety standards certificate from TUV Rheinland Group for its solar panels. This certificate confirms that SunPower has met the stringent construction requirements set forth by the IEC certification board, in close cooperation with United Laboratories (UL), to provide for the safe electrical and mechanical operation of its solar panels during their expected lifetime.

"We are pleased that SunPower is the first company to meet the strict guidelines established by the IEC's new safety standards," said William Mulligan, vice president of technology and development for SunPower Corporation. "This TUV safety certificate demonstrates SunPower's continued leadership in manufacturing the highest quality solar panels on the market."

TUV Rheinland Group is the leading international technical service provider, implementing the toughest independent testing and performance standards on the market today. The IEC 61730 certificate addresses the prevention of electrical shock, fire hazards, and personal injury due to mechanical and environmental stresses to the solar panel. It also specifies particular construction requirements and is considered an upgrade to the IEC 61215 certificate, edition 2, that was earned by SunPower in the Spring of 2006.

About SunPower

SunPower Corporation (NASDAQ: SPWR) designs, manufactures and markets high-performance solar electric technology worldwide. The company's high- efficiency 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, please visit the SunPower website at http://www.sunpowercorp.com/. SunPower is a majority-owned subsidiary of Cypress Semiconductor Corp. (NYSE: CY).

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.

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SOURCE: SunPower Corporation

CONTACT: Ingrid Ekstrom, +1-510-868-1368, ingrid.ekstrom@sunpowercorp.com, SunPower Corp.

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