PHIUS officially partners with Japanese Passive House Institute PHIJP

Together the partners will work on developing cost optimized, climate specific passive building targets for Japan

Chicago, IL — October 19, 2017 — The Passive House Institute US (PHIUS) announced Thursday that it officially signed a partnership agreement with the recently founded Passive House Institute Japan (PHIJP) based in Tokyo, Japan. The agreement was signed following the 12th Annual North American Passive House Conference in Seattle where a delegation of six PHIJP board members were in attendance. The two parties will work on developing specific cost and climate optimized design targets for passive buildings similar to the PHIUS+2015 Passive Building Standards for North America as well as making PHIUS Certified Passive House Consultant (CPHC®) training and building certifications available to interested professionals and parties in Japan.

The partnership is a result of two first successful projects in the region: In 2016 the first PHIUS+2015 project was certified in Yokohama, Japan. A second project is currently under construction in Chiba, Japan. Japan’s climate zones are very similar to the Eastern half of the United States and range from very cold to very hot and humid climate zones. PHIUS climate specific passive building standards are highly relevant to the climates of Japan, making PHIUS the perfect partner to assist in successful implementation of passive building principles and standards in the varied climates of Japan.

“Tailoring envelope assemblies to climate zones is critical to making high performance buildings affordable, effective and durable,” said Katrin Klingenberg, Director of PHIUS, “It is the most cost effective way to zero. We are excited to help creating standards and design guidelines that make passive zero energy ready buildings possible in Japan. ”

PHIUS and PHIJP have already begun work on translating training materials and on generating appropriate climate data. The first professional training is intended to be held in Tokyo during the first quarter of 2018.


PHIUS is a 501(c)(3) organization committed to making high-performance passive building the mainstream market standard. PHIUS is transforming the building sector by developing and promoting North American specific standards, practices, and certifications for buildings, professionals, and products to create structures that are durable, comfortable, healthy, and super energy efficient.

Founded in 2003, PHIUS has trained over 2,600 architects, engineers, energy consultants, energy raters, and builders in the passive building standard. The organization is the leading passive building research and information provider in North America. PHIUS released the PHIUS+ 2015 climate-specific building standard, developed under a DOE grant in partnership with Building Science Corporation, in March of 2015. In addition to the DOE, PHIUS has also established strategic relationships with key organizations including RESNET and the Home Innovation Research Labs, among others. The organization has received funding from the Richard King Mellon Foundation and, more recently, the John D. and Katherine T. MacArthur Foundation and the Illinois Clean Energy Community Foundation.

Through its Passive House Alliance US (PHAUS) program, a membership-based organization with over 800 members across 16 local chapters and dozens of corporate sponsors, PHIUS is building a robust national network of passive building communities across North America.

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Katrina Kramens
PHIUS/PHAUS Communications