Fuel cell power systems convert the energy of a fuel and an oxidant directly into electrical energy and heat using an electrochemical process. Fuel cell power systems consist of electrochemical reactors and the balance of plant. Electrochemical reactors convert the energy from chemical to electrical form. Balance-of-plant provides the required reactant and product flows, to and from the electrochemical reac-tors, and converts the power output to a usable form, such as AC power for a utility grid.
