Katrin Klingenberg is the Executive Director of the Passive House Institute US | PHIUS. PHIUS is a 501(c)(3) organization committed to making high-performance passive building the mainstream market standard. In 2003, Ms. Klingenberg, a registered architect in Germany, designed and completed the first home to meet passive house standards in the United States. Since then, she has designed and consulted on numerous passive house and building projects across North America’s varied climate zones. In 2007 she co-founded the Passive House Institute US. In addition to her executive role at PHIUS, she is the lead instructor for the PHIUS Certified Passive House Consultant (CPHC®) training, where she directs curriculum development. She also directs the technical and research programs at PHIUS, which, under her leadership, has trained over 2,500 architects, engineers, energy consultants, energy raters and builders in passive building standards. PHIUS is the leading passive building research and information provider in North America and, in 2015, released the innovative PHIUS+ 2015 climate-specific passive building standard, the only one of its kind in the world. She has written and co-authored numerous magazine articles and book contributions, and has presented nationally and internationally on the topic of passive building science.