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InSpacePropulsion Technologies is a technology company.
InSpacePropulsion Technologies (ISPTech) develops and supplies advanced propulsion systems designed for in-space applications. The company’s core offering comprises robust, cost-effective, and rapidly deployable solutions, built upon over a decade of dedicated research and development to provide tailored propulsion technologies suitable for various spacecraft and mission profiles.
The company was established in 2023 by co-founders Dr. Lukas Werling and Felix Lauck. Dr. Werling, whose background includes over 14 years specializing in non-toxic rocket propulsion, identified a significant market need for affordable, resilient, and environmentally conscious propulsion systems. This insight formed the foundational premise for ISPTech, aiming to address critical requirements within the expanding space sector.
ISPTech’s propulsion systems are designed for a broad customer base, encompassing spacecraft of all sizes and supporting diverse operational missions. The company’s long-term vision is to lead the advancement of green in-space propulsion, providing high-performance and accessible technology for every spacecraft to enable more efficient and sustainable orbital operations in the future.
InSpacePropulsion Technologies has raised $15.0M across 3 funding rounds.
InSpacePropulsion Technologies has raised $15.0M in total across 3 funding rounds.
InSpacePropulsion Technologies (ISPTech) is a German space propulsion startup that develops safe, cost-effective, and environmentally friendly propulsion systems for spacecraft of all sizes, from CubeSats to large satellites, capsules, and landers.[1][2][3] Founded in 2023 as a spin-off from the German Aerospace Center (DLR), ISPTech leverages over 10 years of R&D to deliver non-toxic propellant-based solutions like HIP_11 (hydrogen peroxide and ionic liquid) and HyNOx (nitrous oxide), addressing the trade-off between low cost and high reliability in current systems.[2][3] The company serves NewSpace players, satellite integrators, and institutional organizations, solving key challenges in space mobility through robust performance, rapid delivery, and reduced toxicity.[1][5] Recent growth includes €2M in pre-seed funding from High-Tech Gründerfonds (HTGF) and Possible Ventures, contracts with ATMOS Space Cargo and Binar Space Propulsion, and awards like the Deep Tech Momentum 2025 Acceleration Prize, with in-orbit demonstrations planned for 2025.[1][3]
ISPTech emerged from more than a decade of research at DLR's Institute of Space Propulsion in Lampoldshausen, Germany, where founders Dr.-Ing. Lukas Werling (CEO) and Felix Lauck conducted thousands of hot gas tests.[2][3] Werling and Lauck, with over 40 years of combined experience in space propulsion, spun off the company in July 2023, supported by DLR and the Helmholtz Association.[2][3] The idea crystallized from their work on novel propellants: Lauck's doctoral project yielded the patented HIP_11 hypergolic propellant (specific impulse up to 310 seconds, low toxicity), while HyNOx provided a complementary cold-gas option.[2] Early traction came swiftly—HyNOx won DLR's Small Satellite Payload Competition for an in-orbit demo, powered Binar's lunar Prospector mission (ISPTech's first international deal), and the Cold Gas CubeSat module launched amid back-to-back awards like the Horst Hauck Gründerpreis for top DLR spin-off.[1]
ISPTech stands out in the propulsion market by bridging cost and performance gaps with green technologies proven through extensive DLR testing.[2][3]
ISPTech rides the NewSpace boom, where proliferating small satellites, lunar missions, and orbital logistics demand affordable, green propulsion amid regulatory pushes for sustainability.[1][3] Timing aligns with Europe's microlauncher growth (e.g., DLR demos) and cargo return needs, as toxic legacy systems like hydrazine face scrutiny.[2] Market forces favor ISPTech: falling launch costs amplify propulsion's share of budgets, while non-toxic tech reduces handling risks and enables denser satellite constellations.[5][6] By commercializing DLR innovations, ISPTech influences the ecosystem—democratizing high-reliability mobility for startups like Binar and ATMOS, accelerating Europe's space autonomy, and paving greener paths in a market projected for rapid expansion.[1][4]
ISPTech is primed for scale with 2025 in-orbit demos (HyNOx on European microlauncher, Cold Gas module) validating tech and unlocking volume orders.[1] Expect expansion into more lunar/planetary missions, leveraging €2M funding for production ramp-up and team growth beyond its 1-10 employees.[3][5] Trends like reusable spacecraft and mega-constellations will amplify demand for its cost-reliable edge, potentially evolving ISPTech into a key European propulsion supplier—influencing a safer, sustainable space economy as it pioneered with DLR roots.[2][3]
InSpacePropulsion Technologies has raised $15.0M in total across 3 funding rounds.
InSpacePropulsion Technologies's investors include Julia Flaig, Faber Ventures, Final Frontier, First Momentum Ventures, German Aerospace Centre, High-Tech Grunderfonds, Lightfield Equity, Seedfonds Baden-Wurttemberg, Koen Geurts, General Catalyst, Picus Capital, Point Nine Capital.
InSpacePropulsion Technologies has raised $15.0M across 3 funding rounds. Most recently, it raised $6.5M Seed in February 2026.
| Date | Round | Lead Investors | Other Investors |
|---|---|---|---|
| Feb 27, 2026 | $6.5M Seed | Julia Flaig | Faber Ventures, Final Frontier, First Momentum Ventures, German Aerospace Centre, High-Tech Grunderfonds, Lightfield Equity, Seedfonds Baden-Wurttemberg |
| Jul 1, 2024 | $2.0M Seed | Koen Geurts | General Catalyst, Picus Capital, Point Nine Capital, Hanno Renner, Michael Wax, Maximilian Ochs, Christoph Baumeister |
| $6.5M InSpacePropulsion Technologies | Join Capital |