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Your personal contact

of PV Experts

Wilfried Rehme

ICT – Die Projektfabrik

After successfully obtaining a vocational qualification as a precision electrical engineer in the power station field, he went on to study electrical engineering. Following his studies he worked in the German heavy industry sector as a planner and project manager.


Yakov Safir

RAcell ApS

Since graduation in 1981 from the Technical University of Denmark with M.Sc. in Physics and Ph.D. studies focusing on ultra shallow semiconductor PN junctions, he became a scientist, associate professor and industrialist.


Markus Steinkötter

Sunnyside upP® GmbH

After his job as project manager and instructor in the social and trade field Mr. Markus Steinkötter (42) studied mechanical engineering at the University Aix la Chapelle with special emphases on energy and environmentalism technique.


Thomas Schmidt

Managing Director of Thomas Schmidt Consultants GmbH and Chairman of the PVExperts e.V.

After a technical apprenticeship at Siemens, Thomas Schmidt worked at the Heinrich Hertz Institute, the Fraunhofer Institute for news technology in Berlin. In 1985 he set up Ultra Tube GmbH in Berlin, where he was Technical Managing Director.


Thomas C. Sauer


Thomas C. Sauer leads EXXERGY GmbH and is founder of the Alliance of Competence. The chemical process engineer has years of industry experience in the field of renewable energy.


Dr. Wilhelm Stein

Stein Engineering & Consulting

Held various executive positions in corporate and startup-companies within the solar industry for over more than 7 years. Before joining the solar industry, he was working in the semiconductor business. Dr. Stein holds a PhD degree from the Max-Planck-Institute in Stuttgart and studied Physics at the University of Heidelberg.