Barrett Stambler has more than 20 years of experience in the renewable energy business with PPM Energy, PacifiCorp, U.S. Windpower, Calpine, and the U.S. Department of Energy. Stambler has most recently served as PPM Energy's managing director of renewable origination and will continue to oversee PPM Energy's wind sales and marketing activities in his new role expanding PPM Energy's customer relationships across North America. He has been integral in PPM Energy's wind power business from its earliest days, including the company's first-ever power purchase agreement for Stateline Wind Energy Center in 2001. Stambler holds a B.A. from Pomona College and an M.B.A. from Yale University.