Hoku Scientific, Inc. is a materials science company focused on clean energy technologies. The Company has three operating business units in two industries: Fuel Cell and Solar. The Fuel Cell industry is comprised of the fuel cell segment. The Solar industry is comprised of the photovoltaic (PV) system installation business unit (Hoku Solar) and polysilicon production business unit (Hoku Materials). Hoku Materials focuses on manufacturing, marketing and selling polysilicon for the solar market from its plant, which is under construction in Pocatello, Idaho. Hoku Solar is marketing and installing photovoltaic systems in Hawaii. Hoku Fuel Cells has developed fuel cell membranes and membrane electrode assemblies for stationary and automotive proton exchange membrane fuel cells.