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Bloom Energy Corporation designs, manufactures, sells, and installs solid-oxide fuel cell systems for on-site power generation in the United States and internationally. The company offers Bloom Energy Server, a solid oxide technology that converts fuel, such as natural gas, biogas, hydrogen, or a blend of these fuels into electricity through an electrochemical process without combustion. It sells its products through direct and indirect sales channels to utilities, data centers, agriculture, retail, hospitals, higher education, biotech, and manufacturing industries. The company was formerly known as Ion America Corp. and changed its name to Bloom Energy Corporation in 2006. Bloom Energy Corporation was incorporated in 2001 and is headquartered in San Jose, California.

Ballard Power Systems Inc. engages in the design, development, manufacture, sale, and service of proton exchange membrane (PEM) fuel cell products. The company offers its products for power product comprising for bus, truck, rail, marine, stationary, and emerging market, such as material handling, off-road, and other applications. It also engages in the delivery of services, including technology solutions, after sales services, and training; and provision of engineering services, product and systems integration services, and related technology transfer for a variety of PEM fuel cell applications. It operates in the United States, Germany, Canada, China, Poland, the United Kingdom, the Netherlands, France, Denmark, Belgium, India, Taiwan, Spain, Norway, Australia, Japan, and internationally. The company has a strategic alliance with Linamar Corporation for the co-development and sale of fuel cell powertrains and components for class 1 and 2 vehicles in North America and Europe. Ballard Power Systems Inc. was founded in 1979 and is headquartered in Burnaby, Canada.

Plug Power Inc. develops hydrogen and fuel cell product solutions in North America, Europe, Asia, and internationally. The company offers GenDrive, a hydrogen-fueled proton exchange membrane (PEM) fuel cell system that provides power to material handling electric vehicles; GenSure, a stationary fuel cell solution that offers modular PEM fuel cell power to support the backup and grid-support power requirements of the telecommunications, transportation, and utility sectors; ProGen, a fuel cell stack and engine technology used in mobility and stationary fuel cell systems, and as engines in electric delivery vans; GenFuel, a liquid hydrogen fueling delivery, generation, storage, and dispensing system; GenCare, an ongoing Internet of Things-based maintenance and on-site service program for GenDrive fuel cell systems, GenSure fuel cell systems, GenFuel hydrogen storage and dispensing products, and ProGen fuel cell engines; and GenKey, an integrated turn-key solution for transitioning to fuel cell power. It also provides electrolyzers, a hydrogen generator for clean hydrogen production; liquefaction systems that provides liquid hydrogen to customers; cryogenic equipment for the distribution of liquified hydrogen, oxygen, argon, nitrogen and other cryogenic gases, including trailers and mobile storage equipment; and liquid hydrogen, an alternative fuel to fossil-based energy. The company sells its products through a direct product sales force, original equipment manufacturers, and dealer networks. Plug Power Inc. was incorporated in 1997 and is headquartered in Latham, New York.