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SunPower Executives to Speak at Key Investor Events in June 2007
Company to Webcast Presentations Live at http://investors.sunpowercorp.com/events.cfm
SAN JOSE, Calif.

SAN JOSE, Calif., May. 31, 2007  /PRNewswire/ -- SunPower Corporation (NASDAQ: SPWR), a Silicon Valley-based manufacturer of high-efficiency, commercially available solar cells, solar panels, and solar systems, today announced that members of its executive staff will deliver presentations at key investor conferences in June 2007.

Julie Blunden, vice president of public policy and corporate communications, will participate on a panel at the Citigroup Climatic Consequences Conference on June 5th at 2:20 GMT in London. Ms. Blunden will then address the Thomas Weisel Partners Alternative Energy Conference on June 13th at 9:00 a.m. EDT in New York City.

On June 6th, Manny Hernandez, chief financial officer, will speak at the RBC Capital Markets Energy Conference at 9:40 a.m. EDT in New York City. SunPower's CEO, Tom Werner, will present at the 4th Annual Renewable Energy Finance Forum Wall Street on June 20th at 11:30 a.m. EDT, also in New York City.

Each event will be broadcast live at http://investors.sunpowercorp.com/events.cfm during their respective times and will be archived for two weeks on the SunPower website.

About SunPower

SunPower Corporation (NASDAQ: SPWR) 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).

Forward Looking Statement

Statements made in this release that are not historical in nature and that refer to SunPower's plans and expectations for the future, are forward-looking statements made pursuant to the Private Securities Litigation Reform Act of 1995. We use words such as "will" and similar expressions to identify such forward-looking statements. Our actual results may differ materially due a variety of factors, including but not limited to the risks identified in our filings with the Securities and Exchange Commission. All forward-looking statements included in this release are based upon information available to SunPower as of the date of this release, which may change, and we assume no obligation to update any such forward-looking statement.

SunPower is a registered trademark of SunPower Corporation. 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: Julie Blunden, +1-408-240-5577, SunPower Corporation

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