FuelCell Energy, Inc., together with its subsidiaries, engages in the development, production, and sale of high temperature fuel cells for clean electric power generation. It offers Direct FuelCell Power Plants that electrochemically produce electricity using various fuels, including gas, methanol, diesel, biogas, coal gas, coal mine methane, and propane. The company markets its products to electric utilities and independent power producers; universities; government installations; wastewater treatment facilities; oil production and refining; gas transmission; food and beverage processors, and agricultural operations, as well as landfill gas markets; various commercial, industrial, and municipal customers; and government customers, including food processing plants, government buildings, hotels, and military installations. It also develops carbonate fuel cells, planar solid oxide fuel cell technology, and other fuel cell technologies. The company operates in South Korea, the United States, England, Indonesia, Germany, Canada, and Japan. It has strategic alliances with POSCO Power, Enbridge, Inc., and Abengoa. The company has an installed base and backlog of approximately 180 megawatts. FuelCell Energy, Inc. was founded in 1969 and is headquartered in Danbury, Connecticut.