Voltify is building a complete energy system for freight rail, pairing battery-electric locomotives with charging and microgrid infrastructure. Its approach retrofits diesel locomotives during standard overhaul cycles and uses grid-independent energy networks along rail corridors, extending power to nearby industrial sites as well as trains.
Dayton-Phoenix Group, IncSince 1939, Dayton-Phoenix Group has designed and manufactured electrical and mechanical systems for heavy industry, with roots in Dayton and a particular focus on rail, mining, and off-highway equipment. Its made-to-spec work spans durable equipment components and newer electrification systems, including VOLT, a portable battery solution that helps operators hybridize existing locomotives rather than replace them. The privately held company has more than 750,000 square feet of vertically integrated manufacturing space across the United States and supports customers through repair, remanufacturing, and engineering from concept through production.DAYTON, OH
AMPS Traction LLCEstablished in 2018, Westerville-based AMPS Traction manufactures new and repowered all-battery locomotives for rail and heavy-industry customers. Its small engineering team develops FRA-compliant battery-electric solutions for applications ranging from industrial switching to scenic railways, including a patent-pending suspension system that cushions battery packs during coupling and switching. AMPS Traction’s G9 locomotive entered regular revenue service with Newburgh & South Shore Railroad in 2025.WESTERVILLE, OH
RedHawk Energy Systems, LLCPataskala’s RedHawk Energy Systems has spent more than 40 years engineering and manufacturing prime and backup power systems for critical infrastructure, with a particular foothold in railroad power. The third-generation family business, founded in the early 1980s and operating as an ISO 9001:2015-certified subsidiary of the Arthur N. Ulrich Company, designs application-specific systems rather than forcing customers into a standard package. Its patented Switch Boost™ ultracapacitor systems and railroad fuel-cell installations are among the company’s distinctive contributions to keeping remote rail signaling and communications operating.PATASKALA, OH
National Railway Supply (NRS)From its Savannah headquarters, National Railway Supply supplies batteries and battery chargers built around the needs of railroads and mass transit systems. NRS’s staff brings more than 135 years of combined experience in the battery, charger, and rail industries, while its products support everything from rail signaling to locomotive starting. The company also provides battery and charger repair through a network of service locations and recycles most lead-acid batteries, including those purchased elsewhere.ALBANY, NY