Transport mobility

H3X Technologies

Website

At H3X, we are making the lightest, high-power electric propulsion systems in the world to enable a large-scale revolution in aircraft electrification. Our first product is a 250-kW (335 HP) integrated motor drive in an 18 kg package. It combines the electric motor, inverter, and gearbox into a single powerful unit and is the culmination of pate

Founded 2020Origin source ↗Checked 2026-09-15

Overview

At H3X, we are making the lightest, high-power electric propulsion systems in the world to enable a large-scale revolution in aircraft electrification.

Our first product is a 250-kW (335 HP) integrated motor drive in an 18 kg package. It combines the electric motor, inverter, and gearbox into a single powerful unit and is the culmination of patent pending innovation in multiple areas.

Company description As recorded 2026-11-08
LinkedIn About
Transport mobilityHardware deviceBusinessesEnterpriseHardware sales

Product & workflow

At H3X, we are driven to push the boundaries of engineering to develop motor technology that will enable these shifts to happen— not ten years from now, but today.

Source-reported As recorded 2026-09-23

Founders & team

Eric Maciolek

Founder

I am responsible for all operations and mechanical design at H3X. In prior roles, I have led projects developing control systems for electric and hybrid powertrain systems from the ground up. I have a BS in Mechanical Engineering from University of Wisconsin-Madison. I come from a proud heritage of craftsmen – from butchers and bakers to electricians and steamfitters. This unique background has enabled me to bridge the gap between advanced engineering theory to practical and scalable solutions.

LinkedIn
Founder profile As recorded 2026-09-15

Jason Sylvestre

Founder

Co-founder & CEO of H3X Technologies. Ex- Specter, Tesla, MTS. MS and BS in Electrical Engineering from University of Wisconsin-Madison. Built electric racecars in college (FSAE).

LinkedIn
Founder profile As recorded 2026-09-15
58team members reported
Source-reported As recorded 2026-09-15

Founded 2020 · Source

News & product activity

Sources & observations

Y Combinator

Profile depthverified profile
Website observationwebsite reachable
Last website check2026-11-11
Location · source statedDenver, CO, USA
Pricing evidenceNo pricing page confirmed
Maturity: Not assessed · 3 of 6 areas documented

Source-based assessment · automated evidence rules

The retained text does not establish product availability or customer use.

Maturity is an evidence-based assessment, not a success rating. It may understate the current stage where evidence is limited. Coverage records documented areas, not a complete or independently audited company history.

Stage definitions
independent websitesource corroborationreachable websitedescriptive evidenceclassified market and modelsourced peoplesourced founding year
startup.observe Directory coverage · Sources & method