Monday, December 10, 2007

SunPower and Jiawei SolarChina Sign Silicon Ingot Pulling and Wafer Agreement

SAN JOSE, Calif., Dec. 7 /PRNewswire-FirstCall/ -- SunPower Corporation
(Nasdaq: SPWR), a Silicon Valley-based manufacturer of high-efficiency solar
cells, solar panels and solar systems, today announced that it has signed a
five-year agreement with Jiawei SolarChina Co., Ltd. (Jiawei) to secure a
supply of monocrystalline silicon ingots and silicon wafers.

Jiawei is affiliated with SunEnergy, SunPower's solar panel assembly
partner, and plans to scale its operations to 200 ingot pullers in Beijing,
China. Beginning in 2008, SunPower will purchase sufficient silicon in ingot
and wafer forms to satisfy production requirements that represent more than
900 megawatts of solar cell production based on SunPower's expected silicon
utilization during the agreement period and subject to contract conditions.
SunPower will provide polysilicon to Jiawei during the life of this agreement.

"Our partnership with Jiawei will diversify our upstream supply chain,"
said PM Pai, chief operating officer at SunPower Corp. "As we scale and
expand our silicon supply base into China, we are pleased to extend our
relationship with our partner, Jiawei."

About SunPower

SunPower Corporation (Nasdaq: SPWR) designs, manufactures and delivers
high-performance solar electric systems worldwide for residential, commercial
and utility-scale power plant customers. SunPower high-efficiency solar cells
and solar panels generate up to 50 percent more power than conventional solar
technologies and have a uniquely attractive, all-black appearance. With
headquarters in San Jose, Calif., SunPower has offices in North America,
Europe and Asia. For more information, visit
SunPower is a majority-owned subsidiary of Cypress Semiconductor Corp.

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