Founded in 1999, PSE AG is a technology company with specialized expertise in test equipment. We have almost 20 years of experience in building test facilities, developing new test methods and implementing turnkey laboratories around the world. As a spin-off of the Fraunhofer Institute for Solar Energy Systems ISE, PSE is closely linked to research. We continue to develop the state of the art in testing equipment and help to ensure quality in renewable energy technology, which in turn builds confidence in the market. PSE AG is a team of solar professionals that takes on projects to assist solar research institutions and solar companies. We provide a range of equipment for testing of solar thermal collectors and photovoltaic modules.