Dr. Henry Hieslmair joined DNV in 2017 and has been focused on various module topics including photovoltaic system degradation, PV module useful life assessments, PV module waste volume, toxicity and circularity (Nature Physics 19.10 (2023)), module O&M modeling, utility plant construction automation, and emerging module technologies. Henry Hieslmair has worked in the PV solar industry since 1993 when he began his PV career at Siemens Solar Industries in Camarillo CA (previously ARCO Solar). Subsequently, he pursued his graduate and post-graduate work at U.C. Berkeley and Lawrence Berkeley Laboratories where he focused on process improvements for multi and monocrystalline PV silicon. After his studies, he cofounded a start-up where he designed and developed a thin multicrystalline interdigitated-back-contact PV cell and module. In 2010, as an early employee at another start-up, he helped pioneer the first high productivity (>3000 wafer per hour) ion implantation tools for the PV industry for phosphorous and boron doping (was utilized for early TOPCon manufacturing). Subsequently, at SunEdison, he worked to commercialize their Continuous Czochralski silicon growth method, performed cell-to-module loss analyses, developed module testing procedures, and performed extensive analysis on boron-oxygen light induced degradation. Over the course of his career, Henry has also consulted for many firms involved in silicon PV including DOE Sunshot program, Solexel, Kleiner Perkins, and Crystal Solar. He has 7 patents and has authored or co-authored over 50 conference and journal articles on PV materials science, device operation, and manufacturing.