Dr. Stefan Hess studied Environmental and Process Engineering in Augsburg, Germany. He was with Fraunhofer ISE for six years as a project manager and researcher on solar thermal collectors and systems. He received a PhD in Energy Engineering from De Montfort University Leicester in 2014, supported by a full PhD scholarship of Reiner Lemoine Foundation. As a Postdoc, Stefan was with Stellenbosch University in South Africa for two years, where he did research, teaching and commercial projects on solar thermal process heat.

From 2017 to 2022 Stefan lead the research group “sustainable building energy technology” of Freiburg University at the Department of Sustainable Systems Engineering INATECH. He coordinated the project network "LowEx-Bestand", where heat pump systems for the refurbishment of multifamily buildings were developed, analysed and demonstrated. Stefan taught and examined in the Master course “Sustainable Systems Engineering”, he supervised more than 30 Bachelor-, Master- and PhD-Theses and he reviews articles for the journals Solar Energy and Renewable Energy.

Since 2022, Stefan is with Infineon Technologies AG in Munich, where he develops and coordinates R&D projects on renewable energy technologies, power conversion and sensor systems.