German Space Tech Startup ISPTech Secures €5.5M to Revolutionize Satellite Propulsion and Enable Agile In-Orbit Maneuvering

In a major boost for the future of sustainable space operations, InSpacePropulsion Technologies (ISPTech), a cutting-edge German space tech company, has successfully closed a €5.5 million funding round. This investment will accelerate the development and deployment of their groundbreaking non-toxic propulsion systems, designed to enable fast, precise, and agile in-orbit maneuvering for satellites—an innovation poised to transform the rapidly evolving space industry.

The funding round was spearheaded by Join Capital, a prominent European venture capital firm, with strong participation from a roster of heavyweight investors including High-Tech Gründerfonds (HTGF), Faber, First Momentum Ventures, Lightfield Equity, Final Frontier Liftoff, the German Aerospace Center (DLR), and Start-up BW Seed Fonds. This diverse group of backers underscores the immense potential and broad industry support for ISPTech’s mission.

Why Satellite Propulsion Is the Next Frontier in Space Tech

As the number of satellites in Earth’s orbit skyrockets—driven by mega-constellations like Starlink, OneWeb, and Amazon’s Project Kuiper—the challenges of space traffic management and collision avoidance are becoming more critical than ever. Satellites must be able to change orbits quickly and efficiently, but traditional propulsion systems often fall short in terms of agility, responsiveness, and thrust.

Compounding the issue, the space industry is under mounting regulatory pressure to phase out highly toxic propellants such as hydrazine, which pose significant environmental and safety risks. This regulatory shift is forcing satellite manufacturers and mission operators to rethink their propulsion strategies and seek out safer, greener alternatives.

ISPTech’s Vision: Non-Toxic, Agile, and Scalable Propulsion

ISPTech is stepping up to meet these challenges head-on. The company is developing flight-ready propulsion systems that promise to deliver both the agility and environmental safety required for next-generation satellite operations. Their technology is already attracting attention from satellite manufacturers and mission operators, with potential applications extending beyond commercial satellites to include defense, in-orbit servicing, and satellite refueling.

Dr. Lukas Werling, CEO and co-founder of ISPTech, emphasized that while reusable rockets have dramatically improved access to space, the next leap forward will depend on enhanced in-orbit mobility. “The future of space is not just about getting there—it’s about what you can do once you’re there,” Werling stated. “Our propulsion systems are designed to enable a more capable and scalable space ecosystem, where satellites can maneuver with unprecedented precision and flexibility.”

Meet the Tech: HyNOx and HIP_11

At the heart of ISPTech’s innovation are two flagship propulsion systems:

• HyNOx: A high-performance, non-toxic propulsion solution tailored for agile in-orbit maneuvering across a wide range of spacecraft classes.
• HIP_11: A next-generation system designed for even greater efficiency and scalability, with ongoing development supported by ESA-backed projects.

Both systems are positioned as direct replacements for toxic hydrazine-based thrusters, offering comparable or superior performance without the environmental and safety drawbacks.

From Lab to Launch: ISPTech’s Path to Commercialization

ISPTech is rapidly moving from development to deployment. The company is currently preparing two customer missions, with its first small-satellite mission—featuring ISPTech propulsion—scheduled for launch in 2026. CubeSat units are already in acceptance testing, and the company reports strong early customer traction, signaling robust market demand for their technology.

In addition to commercial partnerships, ISPTech is collaborating with the European Space Agency (ESA) on projects focused on HIP_11 and orbital refueling technologies, further validating the strategic importance of their work.

The Bigger Picture: Enabling a New Era of Space Operations

Looking ahead, ISPTech’s long-term vision is to expand spacecraft mobility to enable more flexible satellite operations and unlock new possibilities for in-orbit services. This could include everything from satellite inspection and repair to active debris removal and on-orbit manufacturing—all of which depend on reliable, efficient propulsion.

As the space industry continues to evolve, the ability to maneuver satellites with precision and sustainability will be a game-changer. ISPTech’s technology is not just about improving performance; it’s about building a safer, more sustainable, and more capable space ecosystem for the future.

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• 🛰️ Collision avoidance & space traffic management
• 🚀 ESA-backed propulsion projects
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• 🌍 Environmental safety in space
• 🚀 Hydrazine-free propulsion
• 🛰️ Satellite agility & responsiveness
• 🤝 Industry partnerships & traction
• 🌱 Building a scalable space ecosystem
• 🚀 From lab to orbit: ISPTech’s journey

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