Plug Power Inc. designs, manufactures and markets proton exchange membrane (PEM) fuel cells for stationary applications. Plug Power\'s strategic partners include GE Fuel Cell Systems, DTE Energy Technologies, Vaillant GmbH, Honda R&D Co., Ltd., Engelhard Corporation and Celanese Ventures. The Company\'s headquarters are located in Latham, N.Y., with offices in Washington, D.C., and The Netherlands.