SunPower Corporation has announced that it has signed a multi-year polysilicon supply agreement with Jupiter Corp., Ltd., a sales office of Qingdao DTK Industries Co., Ltd., a corporation based in China. Starting in 2010 and continuing through 2016, SunPower has contracted to purchase increasing volumes of polysilicon from Jupiter, Qingdao DTK.

"Jupiter, Qingdao DTK will provide polysilicon to our ingot suppliers, supporting our drive to scale rapidly and cost-effectively to meet the demand for our high-efficiency solar systems." --Tom Werner, CEO, SunPower