Enthusiast Hydrogen Corporation is developing ways to locate, recover, and use naturally occurring hydrogen beneath the central United States. Since 2023, the Liberty, Missouri company has focused its exploration on the Reelfoot Rift, while developing aerial laser detection and deep-borehole technologies for a resource that may lie miles underground. Its Ohio test center and network of more than 75 contributors support the early-stage program.
Hydrogen Energy Systems, LLCFounded in Akron in 2007, Hydrogen Energy Systems, LLC develops hydrogen-fuel technology for internal-combustion engines, centered on its patented Hydrogen Mixing Block™. The device replaces a carburetor or electronic fuel injector so small engines can run mechanically on 100% compressed hydrogen, and the company has tested the system across engines from 6 to 13 horsepower. HES has also demonstrated the technology in a portable generator and a six-passenger golf shuttle prototype.AKRON, OH
Davy Gas IncCo-founded in 2021, Cincinnati-based Davy Gas was created to address the weaknesses of centralized hydrogen supply. The company builds, owns, and operates compact on-site plants for industrial users and gas distributors, bringing production closer to demand rather than relying on long-haul deliveries. Its engineering team has more than 80 years of combined experience developing hydrogen manufacturing, storage, and delivery systems.CINCINNATI, OH
ETCH, IncFounded by Johns Hopkins materials scientist Jonah Erlebacher, ETCH, Inc. develops clean hydrogen and solid carbon from natural gas through its patented ETCH Process™. The process produces no carbon dioxide or toxic waste and uses no water, while scaling from distributed installations to utility-scale facilities. ETCH’s technology is designed to decarbonize existing industrial and power assets while creating usable solid carbon as a coproduct.BALTIMORE, MD
Ludlow Electrochemical HardwareIn Queensbury, Ludlow Electrochemical Hardware builds hydrogen technology and electrochemical equipment, including fuel-cell test stations and hydrogen-pump platforms. Established in 2014, the company grew from Dr. Ludlow’s electrochemical hydrogen-pump work, which dates to 2006, and operates from a 5,700-square-foot facility with round-the-clock testing capabilities. Ludlow also provides third-party testing and custom design and fabrication for fuel-cell, electrolysis, and hydrogen applications.QUEENSBURY, NY