SunPower Debuts New High-Efficiency Inverters at Solar Power 2005

SunPower Corp., a Silicon Valley-based subsidiary of Cypress Semiconductor Corp. (NYSE: CY), today introduced two new high-efficiency inverters at Solar Power 2005, the largest business-to-consumer solar conference and expo in the United States. The event is being held this week in Washington, D.C.

High-Efficiency Solar Panels and Inverters Are on Display in Booth # 16


SUNNYVALE, Calif., October 5, 2005 - SunPower Corp., a Silicon Valley-based subsidiary of Cypress Semiconductor Corp. (NYSE: CY), today introduced two new high-efficiency inverters at Solar Power 2005, the largest business-to-consumer solar conference and expo in the United States. The event is being held this week in Washington, D.C.

SunPower debuted inverters rated at 4,600 watts (208V) and 5,200 watts (240V). They complement and expand existing SunPower inverters rated at 2,000 watts (120V), 2,900 watts (208V) and 3,200 watts (240V). Each model is designed and tuned to specifically to match the electrical characteristics of the company's high-efficiency solar panels, thereby maximizing system energy production all year long.

All of SunPower's inverters, which convert the electrical energy generated by the solar panels into the type of electricity used in homes, meet or exceed the highest efficiency rating in their class as reported by the independent testing program developed by the California Energy Commission. The devices are highly reliable, with no fans or thermal derating, and carry an unmatched 10-year standard product warranty. The products are available to the company's North American customers as part of a fully engineered high-performance system solution. The new inverters, along with SunPower's family of high-performance solar panels are on display in Booth #16 at the Solar Power 2005 conference.

"SunPower's new inverters will meet the needs of customers seeking larger solar systems," said Tom Werner, SunPower CEO. "SunPower inverters are optimized for use with our high efficiency solar panels, enabling customers to maximize the amount of solar energy from their rooftops each day."

For more information about SunPower's solar panels and inverters, please visit SunPower's website at http://www.sunpowercorp.com/html/Products/product.html.

About SunPower
SunPower—a Silicon Valley-based majority-owned subsidiary of Cypress Semiconductor Corp. (NYSE: CY)—designs and manufactures high efficiency silicon solar cells and modules based on an all-back-contact design. SunPower's solar cells and modules generate up to 50 percent more power per square foot 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.
About Cypress
Cypress solutions are at the heart of any system that is built to perform: consumer, computation, data communications, automotive, industrial, and solar power. Leveraging a strong commitment to customer service and performance-based process and manufacturing expertise, Cypress's product portfolio includes a broad selection of wired and wireless USB devices, CMOS image sensors, timing solutions, network search engines, specialty memories, high-bandwidth synchronous and micropower memory products, optical solutions, and reconfigurable mixed-signal arrays. Cypress stock is traded on the New York Stock Exchange under the ticker symbol CY. More information about the company is available online at www.cypress.com.
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SunPower is a registered trademark of SunPower Corp. Cypress and the Cypress logo are registered trademarks of Cypress Semiconductor Corporation. All other trademarks are the property of their respective owners.

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