On February 15th, 2016, Marcel Wieghaus the founder and former CEO of SolarSpring passed away much to early in life due to cancer. The entire Team at SolarSpring mourns deeply for a great friend and colleague and will continue to nurture and further develop the sound basis which he built for the company.

Our compassion, thoughts and full support go to his wife and two children.


SolarSpring is a clean-tech company based in Freiburg, Germany, providing industrial waste water and water treatment systems based on membrane distillation (MD) and ultrafiltration (UF) technology.

We are one of the leading companies worldwide in the development of commercial products based on MD, a novel and breakthrough technology for industrial waste water applications and scientific investigations. The thermally driven process of MD is perfectly suited for the concentration and reduction of waste water streams or the separation of volatile components. The application of advanced membrane module concepts and the use of waste heat in our systems results in highly energy and cost efficient processes, compared to traditional technologies. In addition we offer integral solutions for decentralized water purification based on UF technology for households and small communities. Our products produce potable water from nearly any source of dirty or contaminated water and are powered by solar energy or energy from the grid.

FilmClip 2014 - SolarSpring video
FilmClip 2013 - SolarSpring video
Podcast - Sonne als Durstlöscher audio