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Ribbon cutting for ESA's CPL
Enabling & Support

ESA’s first Chemical Propulsion Lab now operational

08/07/2026 535 views 2 likes
ESA / Enabling & Support / Space Engineering & Technology / Shaping the Future

ESA has officially kicked off testing at its new Chemical Propulsion Laboratory (CPL). The CPL is ESA’s first dedicated facility for testing small propulsion systems for space missions.

The CPL is a combined green propellant chemistry lab and engine test cell that will support the growing need for safe and accessible propulsion testing infrastructure and training. Designed specifically for propulsion systems used on small satellites and other small missions rather than large launch vehicle engines, the facility offers rapid-turnaround testing in a safe and regulated environment.

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ESA’s first dedicated chemical propulsion laboratory opens
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Speaking at the opening event, Dietmar Pilz, Director of Technology, Engineering and Quality at ESA said: “This is ESTEC’s first dedicated green chemical propulsion test facility and it is now open for business,” Dietmar Pilz said during his speech to open the facility. “One of the biggest challenges we see for startups and smaller companies is simply getting access to infrastructure, so what we’ve created here is something much more agile, much more accessible. Europe needs infrastructure like this, which allows innovative technologies to be developed, qualified and matured efficiently and reliably. And, I would like to add, rapidly,” he continued.

Rapid access to testing facilities is particularly important for startups and early-stage technology developers, enabling them to validate designs and progress technologies more quickly.

CPL on ESTEC site for testing
CPL on ESTEC site for testing

At first glance, it is remarkably modest. Housed within a repurposed shipping container at the remote Netherlands Aerospace Centre (NLR) site in Marknesse. While located on a different site, the lab is an ESTEC laboratory, so third parties can benefit from proximity to ESA expertise, processes and best practices. ESA already maintains a Europe-wide network of specialised laboratories to supplement the technical services and competence provided by the ESTEC laboratories and the ESTEC Test Centre. The CPL will join that ecosystem.

“The CPL will be a important next step in strengthening ESA’s propulsion capabilitiesand will complement the Electric Propulsion Laboratory which has previously conducted successful testing of water electrolysis propulsion. Together these facilities will renhance the capabilities of ESA member states   in  developing new sustainable propulsion technologies,” explains Jamila Mansouri, Head of Propulsion, Aerothermodynamics and Flight Vehicles Engineering at ESA. “It provides a unique and independent  environment, where innovative propulsion concepts can be safely tested evaluated and matured for future space applications, reinforcing Europe’s capacity to develop advanced propulsion solutions.

Initial testing campaigns have already begun. They currently take place under atmospheric conditions, with potential future expansions such as vacuum conditions already being considered. In addition to testing activities, the facility will support training opportunities for future propulsion specialists.

“This may be a modest facility today, but that’s very much by design — it’s a first step, and one that allows us to grow in a way that is driven by real demand, real users and real impact,” explains Mark Ford, Head of Chemical Propulsion at ESA.

The CPL will be operated through an ESA–NLR collaboration. Marknesse was selected for its established and licensed test infrastructure, which provides a specialised environment for propulsion testing activities.

“I would like to express my enthusiasm for the collaboration between ESA and NLR.  The Chemical Propulsion Laboratory is not just a facility. It’s a capability to support Europe’s ambitions in space, providing SMEs, scale-ups and institutional partners the infrastructure needed to boost their development,” says Martin Nagelsmit, Chief Technology Officer at NLR.

ESA plans to offer access to the facility through the ESA Commercialisation Gateway and GSTP channels. For more information please contact Mark Ford.