SolarSpring GmbH


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Founded in 2009 as a spin-off of the Fraunhofer Institute for Solar Energy Systems in Freiburg, Germany, the SolarSpring GmbH, membrane solutions has grown into a world market leader for membrane distillation technology.
Our core team of 6 engineers and scientists, most of which have been with the company since “day one”, is entirely committed to water treatment and drinking water production.
SolarSpring systems can be found all over the world and are built at our company venue the “Solarhaus” in Freiburg, Germany.
We cooperate and network internationally with smart and creative individuals, but since we value the preservation of resources and local partnerships most of our suppliers are regional.
As a reward for our innovative ideas and developments we were awarded the “Land of Ideas” prize in 2012 and the “Technology-Transfer-Prize” in 2014

The Team

Rebecca Schwantes


As a trained two-wheel mechanic, engineer (mechanical engineering) and graduate of the master's program "ProWater" at the University of Braunschweig, I have been working at SolarSpring since 2014 in research, project management, and since 2023 as managing director.

Kirtiraj Chavan

The Batsman

With a background in chemical engineering (VIT Pune, India) and after working for some years as a process design engineer, my transition to membrane distillation was very smooth and started with a Master Thesis for completion my M.Sc. programme „Process Engineering“ (Offenburg). I stayed on at SolarSpring and dove straight into research on the more “chemical” new applications for MD. I really like life in Freiburg but have noticed a strong lack of good street food and cricket.

Alexander Wolf

The Perfectionist

I joined SolarSpring for my Diploma Thesis titled “Planning, development and construction of a solar-powered Ultrafiltration System for drinking water production” and have been part of the company ever since. I am a specialist for membrane filtration proud creator of the SolarPurification product line and father of three children.

Juan Scherzinger


Juan is responsible for engineering and production.



Customer satisfaction is my highest priority. With a bachelor in communications and a masters in psychology I now take care of marketing and sales for SolarSpring, promoting this fantastic technology for water treatment and sustainability. Into nature, fitness and beach volleyball.

Manuela Verini

Queen of Accounts

Manuela is our accountant and makes the cliché of a boring bookkeeper seem absurd. Make sure to catch the latest news on her extensive Grandfondo cycling career next time you meet her.