Ballard Power Systems Inc. is engaged in development and commercialization of proton exchange membrane (PEM) fuel cell. The Company's principal business is the design, development, manufacture, sale and service of fuel cell products for a variety of applications, focusing on the telecom backup power, material handling, bus and distributed generation markets. It also offers engineering services for various fuel cell applications. It offers tools and technologies for development, optimization, integration and validation of fuel cell components, stacks and systems. It has a portfolio of commercial solutions, including fuel cell stacks, modules and systems. The Company's fuel cell stacks include FCgen-1020ACS, FCgen-1300 and FCvelocity-9SSL. Its fuel cell modules include FCvelocity-HD6. Its complete fuel cell systems include ElectraGen-ME, ElectraGen-H2 and ClearGen.