Flisom is a Swiss solar company which is working towards the commercialization of next-generation flexible CIGS (Copper Indium Gallium Selenide) technology.

Flisom was founded in 2005 as a spin-off of the Laboratory of Solid State Physics of the Swiss Federal Institute of Technology Zurich (ETH Zurich). As of 2015, Flisom continues its growth supported by 60+ employees, with 12 PhDs and 37 engineers. Flisom’s R&D unit and manufacturing facility are both located near Zurich, Switzerland.



Dr. Ayodhya N. Tiwari, Founder & Chairman

Head, Lab for Thin Films and Photovoltaics at Empa-Swiss Federal Laboratories for Materials Science and Technology (holds efficiency world records for flexible thin film CIGS and CdTe solar cells). Earlier Head of PV and Thin Film Physics Group at ETH Zurich; now adjunct professor. 34 years experience in R&D of thin film deposition processes & solar cells. Ph.D. in Thin Film Solar Cells from IIT, Delhi.


Rahul Budhwar, Chief Executive Officer

Previously VP Manufacturing & Business Development at Tata Power Solar, where he led the turnaround of solar cell and module manufacturing business and the multifold growth of the international business. Rahul has been Board member of Flisom since 2013.  ‏Prior to joining Tata Power Solar, Rahul worked with Tata Industries, where he was responsible for assessing new business opportunities in the Cleantech industry.

‏Rahul holds Engineering and MBA degrees. He has completed the Tata Group Executive Leadership Program by the Ross Business School (University of Michigan), and joined Tata as part of their prestigious leadership program – Tata Administrative Service. 


Dr. Sudheer Kumar, Chief Operating Officer

Earlier Associate Vice President & Plant Head at Moser Baer Solar. 20 years experience in thin film industries including strategic project conceptualization and execution, setting-up plants, ramping up and operation of large scale thin film silicon and c-Si production plants.


Dr. Marc Kaelin, Deputy CEO and cofounder

Deputy CEO and cofounder with over 10 years experience in CIGS machine design, automation and construction.

News & Media
Flisom AG receives Swiss Ambassador's Award for Dynamic Synergies in Business, Research and Development
Read More
Flisom inaugurates 15 MW pilot production plant in Niederhasli, Zurich.
Read More
Flisom secures additional investment of CHF 10 million from the Tata group.
Read More