Ballard Power Systems Inc is a clean energy growth company. The company is engaged in proton exchange membrane fuel cell development and commercialization. The company's main business is the design, development, manufacture, sale and service of fuel cell products for a variety of applications, focusing on motive power (material handling and buses) and stationary power (back-up power, supplemental power, and distributed generation). A fuel cell is an environmentally clean electrochemical device that combines hydrogen fuel with oxygen (from the air) to produce electricity. Ballard fuel cell products feature high fuel efficiency, low operating temperature, low noise and vibration, compact size, quick response to changes in electrical demand, modular design and environmental cleanliness.