Protonex, Inc. is a developer of PEM (proton exchange membrane) fuel cell stacks and systems, with unique, proprietary designs and manufacturing methods. The company’s technology increases the useable stack volume, dramatically reduces the stack size and cost, and virtually eliminates the problem of leakage faced by other manufacturers. The company is targeting a variety of low-power portable and remote applications, and has won several government R&D grants.
Location: Marlborough, Massachusetts
Commons Capital's co-investors include:
Conduit Ventures, Massachusetts Green Energy Fund, Parker Hannifin, Solstice Capital, and Silicon Alley Seed Investors