ABB
AFC ENERGY
BALLARD POWER SYSTEMS
BLOOM ENERGY
CUMMINS INC.
DOOSAN FUEL CELL CO. LTD.
FUELCELL ENERGY INC.
FUJI ELECTRIC CO. LTD.
H2SYS
H2X GLOBAL LTD.
NEDSTACK FUEL CELL TECHNOLOGY
PANASONIC HOLDINGS CORP.
PLUG POWER INC.
POWERCELL SWEDEN AB
SIEMENS ENERGY
TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORP.