About us


At CISH, we invest in companies that are working to create a more sustainable world. Our investment strategy identifies companies committed to providing clean solutions for the industries while promoting a circular economy. We provide our portfolio companies with the resources they need to grow and succeed, including access to capital, strategic guidance, and industry expertise. The current subsidiary SolarSpring GmbH offers solutions for the supply of clean water for industry.


Since 2018, we have been committed to providing investment solutions for our shareholders. Our founders recognized the need for sustainable solutions in the energy and water sectors, and we have been working tirelessly ever since to support the growth of these industries.

Our CEO, Christian Zahler, holds an M.Sc. in Physics from the University of Freiburg. Christian Zahler has about 30 years of experience in the solar energy field. He started his solar career at the Fraunhofer ISE (one of Europe’s biggest solar energy research centers) in Freiburg. Additionally, he worked at research institutes in Portugal and Norway. In 1999, he returned to Freiburg and joined PSE AG, where he was responsible for the solar thermal department. In 2008, Christian Zahler and Tobias Schwind founded Industrial Solar.