H3X designs unusually compact, efficient electric motors that deliver high power density for aerospace, marine and heavy-industrial use. Its motors are reversible (can act as motor or generator), include integrated power electronics, and are stackable to scale to higher power levels. The company has demonstrated kilowatt-class products and is working to complete development of megawatt-scale units aimed at hybrid-electric aircraft and marine applications. H3X has customers and contracts across aerospace, marine and the military, including two commercial aviation customers targeting 19‑ and 30‑seat aircraft. The team has grown from the founding group (CEO Jason Sylvestre, CTO Max Liben, COO Eric Maciolek) to about 33 employees. Financially, H3X generated “in the millions” in revenue last year, expects 5x growth this year, and is targeting profitability in 2026. H3X develops advanced electric motors and integrated motor drives (the HPDM family) aimed at enabling sustainable aviation and other high-performance markets. Its product line includes the HPDM-30, HPDM-250, and HPDM-3000, covering 30 kW to 3 MW using the same core scalable technology. The company emphasizes continuous specific power above 10 kW/kg, high efficiency, and vertical integration of electromagnetics, power electronics, additive manufacturing, motor control, and thermal systems. H3X performs design, manufacturing, and testing in-house at its new headquarters and production facility in Louisville, Colorado. It targets fully-electric and hybrid-electric aircraft while also pursuing defense, marine, specialized ground vehicles, and power-generation markets. Founded in 2020, the company aims to become a leading supplier of aviation-grade electric propulsion systems by 2030; its latest funding brings total capital raised to $9M to accelerate technology development and scale production.

Total raised

$20M

Funding rounds

2

Latest round

Series A

Latest activity

Aug 2024