How Are Fuel Cells Used

A fuel cell produces a DC (direct current) voltage that can be used directly or converted to AC (alternating current) to power lights, motors and electrical appliances. Other fuel cells can produce enough energy to power utility plants and automobiles.


A fuel cell engine consists of a fuel processor, where a fuel other than hydrogen is used, as well as an air supply subsystem, a cooling subsystem and controls. For the transportation market, combining these subsystems with the fuel cell creates a fuel cell engine, which can power a car, truck, bus or other vehicle.