Cincinnati-based Edge Energy builds American-made power infrastructure that converts existing single-phase service into reliable three-phase power for EV charging, telecommunications, and agricultural equipment. Founded by Greg York, the company combines patent-pending solid-state digital conversion with modular hardware to help customers deploy critical equipment without costly grid upgrades. Its EdgeEV Power Source is designed and assembled in the United States, with products ranging from mobile charging skids to infrastructure power systems.
DC-AmericaDC-America designs and builds modular, skid-mounted power infrastructure in West Virginia, with a particular focus on turnkey EV charging depots and electrical systems for data centers. Its equipment-agnostic approach integrates customer-selected components into systems that are fabricated, wired, tested, and pre-commissioned off site before deployment across North America. The company also adapts the same platform for other mission-critical power projects where capacity and schedule matter.MILTON, WV
PowerChargeFrom its Rochester, New York base, PowerCharge makes electric-vehicle charging stations for homes, commercial properties and demanding fleet applications. Its lineup runs from the compact, dual-voltage FlexPower charger to heavy-duty DC stations, supported by the PowerCharge Connect network for managing access, billing and charger use. The company also makes a portable EV cart for charging where fixed equipment is not practical.ROCHESTER, NY
System Engineering International, IncSince its founding in 1977, System Engineering International has built its identity around American-made critical-power equipment from its 24,000-square-foot Frederick, Maryland, manufacturing facility. With more than 30,000 systems shipped worldwide, the company is known for supporting infrastructure that cannot afford a power interruption, particularly in industrial and telecommunications settings. SEI also helped shape the IEEE 802.3af Power over Ethernet standard and has manufactured midspan equipment since 2003.FREDERICK, MD
Crown Electric Engineering and Manufacturing LLCCrown Electric grew from the former Westinghouse Iso Phase bus plant in Cincinnati, where its founders acquired the plant’s intellectual property and assets after the facility closed around 1986. Now based in Middletown, Ohio, the company works from a purpose-built factory expanded to more than 50,000 square feet, with a reputation built around hands-on service for the electrical power industry. Its mobile machine shop allows field crews to make or modify parts at a job site, a practical distinction during demanding maintenance and upgrade work.MIDDLETOWN, OH