HTM Hydro Technology Motors

HTM Hydro Technology Motors GmbH develops a drive system based on a hydrogen combustion engine with a rotary-piston design, and the HYGEN hydrogen power generator. The company describes the drive as a retrofit approach that lets existing vehicles keep operating after conversion.

Its stated customers are fleet operators, including off-road airport apron vehicles and on-road light commercial vans such as the Mercedes Sprinter. The website lists design analysis based on total cost of ownership, hydrogen supply and infrastructure consulting, and project implementation as services; the revenue model is not stated in detail.

The company was founded on 18 September 2019 by Silas Hofmann and Maximilian Wack, with Jonas Kahl and Daniel Mescheryakov joining later; it is a spin-out from TU Darmstadt. Milestones on the website include a first demonstrator vehicle (June 2024), a publicly funded HYDROPORTDRIVE project and a pilot with Hamburg Airport (July 2025). Current job listings are in Mommenheim, Frankfurt am Main and Bingen am Rhein.

Product: HTM hydrogen combustion rotary-piston drive system for vehicles and the HYGEN hydrogen power generator, with design and infrastructure services.