FuelCell Energy, Inc. engages in the business of developing, designing, producing, constructing, and servicing high temperature fuel cells for clean electric power generation. The company is headquartered in Danbury, Connecticut and currently employs 584 full-time employees. The company develops commercial technologies that produce clean electricity, heat, clean hydrogen, and water. Its commercial product portfolio is based on its carbonate electrochemical platform. Its carbonate electrochemical platform supports power generation and combined heat and power applications using a variety of fuels, including a 50/50 blend of hydrogen and natural gas or biogas blends, biogas, renewable natural gas, and natural gas. The company offers its products in different configurations for a range of power and chemical applications, including electricity, hydrogen, heat (including steam), water and carbon-di-oxide (CO2) upgradable to food and beverage grade and/or usable in cement or other industrial products, and to concentrate and separate CO2 from fossil-fueled industrial applications allowing the sequestration and/or utilization of the CO2.