About US
Hstar
We exist to build a future where space directly serves Earth — powering clean energy, securing data, and a carbon-free economy
Our company positions itself as the lead designer of Europe’s next-generation very heavy launchers.
Hstar is a French aerospace company developing a large-scale, reusable launch vehicle through an innovative hybrid economic model inspired by industry leaders best practices, to combine technical excellence, industrial resilience, and market adaptability.
Our Vision
A World Facing Escalating Climate Urgency: Space as a Critical Lever
Solar Reflective Power
- Space-Based Solar Power: A Strategic Lever for the Post-Fossil Era
- The Sun delivers in one hour 1,500× more energy than the total annual needs of Earth’s 9,2 billion inhabitants
- Just 1% of this energy would be enough to sustainably power 10 billion people on earth
- A massive opportunity: a global energy market undergoing huge and urgent transformation, worth $10 trillion/year!
In Orbit Data Center
- Data Explosion
- Global internet traffic has tripled since 2017
- Driven by AI, IoT, cloud computing, and streaming
- AI Revolution
- Massive compute needs for Large Langage Models like Mistral, ChatGPT, Google Lens, etc
- More extensive learning models are coming like World Models
- Data centers are becoming critical infrastructure
- Energy Challenge
- Data centers consume 2–3% of global electricity
- Power demand may exceed 1,000 TWh/year
Heavy Infrastructure & Constelations
- Space Infrastructure is a reality
- Large constelation
Operational Pillars
An Agile Model: In-house Design, Strategic Outsourcing
- Role of technical prime contractor
- Focus on system architecture, innovation technology, and low-carbon certification
- Structured partnership with a major European aerospace prime for the industrialization phase
- Mitigate technical and financial risks
- Scale with speed and efficiency
- Non-verticalized ecosystem: Integration of both established and emerging NewSpace actors
Market Vertical Activation to Secure Demand
- Co-design end to end launch solutions with operators of space infrastructure with end users
- Orbital solar power stations (SBSP) and space-based data centers (lower energy impact than on Earth)
- Energy operators
- Cloud giants
Our Core Value
Our launcher system is designed from the ground as a long-term platform that accommodates multiple configurations
Sustainable by Design
From launcher reusability to industrial sourcing, sustainability isn’t a feature — it’s the foundation. We incentivize eco-responsible solutions across our supply chain.
European & Open
We believe in Europe’s collective industrial power. Our model is horizontal, inclusive, and built on collaboration between major aerospace players and NewSpace innovators.
System Leadership
We own and lead system integration — ensuring safety, performance, and scalability — while enabling trusted partners to industrialize at scale.
Flexibility
We deliver fast, customizable missions — with short lead times, tailored orbital profiles, and adaptable deployment systems. Our global network of launch sites ensures unmatched responsiveness and geographic versatility.
Our vehicle
Our company positions itself as the lead designer of Europe’s next-generation very heavy launchers — managing system design and integration while relying on a existant industrial network to reduce risk and maximize climate impact.
40 tons
LEO/REUSABLE
95 tons
LEO/EXPANDABLE
| 1st Stage | REUSABLE/EXPANDABLE |
| LOX/CH4 | |
| 83 MN (thrust) |
| 2nd Stage | REUSABLE |
| LOX/LH2 | |
| 30 MN (thrust) |
| Overall | |
| Length 120m, Diameter 11m |
Our Team
CEO
FRANCOIS HENRY
CTO
OLIVIER LEBRETHON
Head of Sales
GIAO NGUYEN
Contact Us
Feel free to contact us for any questions