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The Passive House Institute (PHI) is an independent research institute that has played an especially crucial role
in the development of the Passive House concept - the only internationally recognised, performance-based energy standard in construction. Learn more about the Institute and its work.

Passive House Days


Energy efficient windows for retrofits receive Component Award

The winners of the second Component Award, this year for Passive House windows for energy efficient solutions in the context of retrofits, have been selected. The joint first prize went to Optiwin for their "System Connecta" and Lorber / Pro Passivhaus-fenster for their "Smartwin Compact S" window. The main challenge was that the product had to show a degree of flexibility since refurbishments are often carried out in a step-by-step manner. The award will be presented at the International Passive House Conference 2015. more

Passive House Days


Programme of International Passive House Conference 2015 now available

The Passive House Standard enables every building owner to benefit from the energy revolution, with certified components ensuring cost-effectiveness. This basic concept will be the focus of the International Passive House Conference, held from 17 to 18 April 2015 in Leipzig. Speakers from all over the world will present exemplary projects and solutions for building systems, ventilation units and windows. An exhibition will provide specific examples of products currently available on the market. more / Conference Programme / Registration

Passive House Days


Passive House Institute introduces new categories for building certification

Renewable energy is the ideal complement to the efficiency of the Passive House Standard. In order to provide reliable guidance for this combination, the Passive House Institute introduces new categories for its building certification; in addition to the Passive House Classic, there will be the Passive House Plus and Passive House Premium classes. A new evaluation procedure will serve as a basis for this. The exact certification criteria and details on the renewable primary energy (PER) calculation system are available on Passipedia. / more

Passive House Days


Passive House Conference in Leipzig with many offers for municipalities

The success of the energy revolution will largely be decided at the local level. The building sector is especially important here because this is where a third of the total energy is consumed. Opportunities for greater efficiency in cities and municipalities will be one of the main topics at the International Passive House Conference in Leipzig. Municipal representatives will be able to attend lectures addressing their specific needs. Speakers from many European countries will also present the results of the EU funded project PassREg. more

Passive House Days


Number of certified Passive House tradespersons hits thousand mark

More and more tradespersons are equipping themselves for the future as the number of certified experts for energy-efficient Passive House construction reaches the thousand mark. This spring alone, more than 200 specialists in twelve countries have taken the Passive House Tradesperson examination. The seal, issued by the Passive House Institute, is increasingly establishing itself as independent proof of competence in the areas of building envelope and building services. more

Passive House Days


"Active for more comfort" - Passive House brochure as online flipbook

How does a Passive House work? Which requirements exist with regard to components, planning, design, and project implementation? What is it like to live in a Passive House, what has already been built, and why are Passive Houses such an attractive investment? In order to competently answer such questions, the International Passive House Association (iPHA) has created the informational brochure "Active for more comfort". A new edition of this brochure is now available as an online flipbook.

Passive House Days


New designPH takes Passive House planning to a whole new level

Passive House planning has never been more convenient. The new designPH, a 3D model interface developed by the Passive House Institute, allows for graphic input of energy related design data. Details relating to the thermal building envelope and shading are entered automatically and can be optimised if necessary. The treated floor area can be gradually refined in order to simplify the design process. The results can be exported into the Passive House Planning Package (PHPP) with just a few clicks. more / order now

Passive House Days


Monitoring confirms efficiency of Passive House tennis hall in Sweden

On the tennis court, Stefan Edberg was the number one for a long time – today the Swede is reaching top scores with his own indoor sports centre. As the first of its kind, the "Södra Climate Arena" in the city of Växjö was built to Passive House Standard in 2012. New monitoring results not only confirm the low consumption values, but the heating demand during the first two years of operation was even lower than anticipated. A user survey also indicates a high level of satisfaction with the comfortable conditions inside the hall. more

Passive House Days


New EU-funded project Sinfonia looks to refurbishment master plans

Institutions across Europe are working together in the EU-funded project Sinfonia in order to develop feasible energy refurbishment concepts for cities. For the demo cities Innsbruck and Bolzano master plans are prepared and implemented at urban district level. The energy savings are being monitored
by the Passive House Institute, which is also participating in the individual refurbishment projects by providing consulting and certification services and looking at the electrical efficiency in households. more / Sinfonia Website

Passive House Days


Number of certified Passive House square metres reaches one million

Building owners throughout the world are increasingly turning to the Passive House Standard – the number of square metres that have been certified internationally has now reached one million. The symbolic threshold was crossed with the certification of a detached house in Santa Cruz in California. Almost 25 years after the construction of a prototype house in Darmstadt, tens of thousands of tenants and home owners continue to benefit from the low heating costs and high level of comfort provided by Passive Houses. more

Passive House Days


Thousands of visitors at International Passive House Days

During the International Passive House Days in early November, hundreds of buildings around the world were opened to the public. Thousands of visitors, wishing to experience the benefits of this energy-efficient construction method for themselves, took advantage of this opportunity: in Europe and America as well as in Asia and New Zealand. Experts demonstrated how it works, residents shared their experiences. An overview of the buildings that were opened is provided on (Photo: Gauler)



Sustainability award presented to Passive House pioneers

A high-level recognition was awarded to Prof. Emeritus Bo Adamson and Prof. Wolfgang Feist with the presentation of the Sustainable Building Award on Thursday in the City of Lund, Sweden. Over 25 years ago, the two physicists developed the concept of a building that needs no active heating; today, the resultant Passive House Standard forms the fundamental basis for energy efficient construction throughout the world. The Award was presented by the former EU Commissioner for the Environment, Margot Wallström. more



Italy's first Passive House School near Verona receives certificate

Energy efficiency and climate protection are a learning process for everyone. Consequently, a school building is always an ideal object of study in the context of building construction. An excellent example of this has been inaugurated near Verona in Italy: the "Scuola Passiva Raldon" – the country's first Certified Passive House School. This new build combines high quality architecture with sophisticated building systems, featuring a special ventilation system integrated into its façade. more

Passive House Days


Designers and architects gear up for the future of construction

With the growing importance of energy efficient construction, the need for relevant knowledge is also increasing. Designers and architects around the world are therefore equipping themselves with the necessary expertise - the number of certified Passive House experts has now reached the 4,000 mark.
In June alone, several hundreds of examinations were given in more than
30 countries, in Europe and North America as well as in South Korea and
New Zealand. more

Passive House Days


Accolade for world-class architecture in Passive House Standard

Building with an eye to energy efficiency is not only cost-effective, it can also augment architectural design. This has been proven by the winners of the 2014 Passive House Award. Seven projects were recognised: an apartment block in Berlin (Germany), a New York retrofit (USA), a seminar building in Goesan (South Korea), an art museum in Ravensburg (Germany), a building complex in Espoo (Finland), a terraced house in Philadelphia (USA) and an entire Passive House district in Heidelberg (Germany). more



Passive House also provides answer to energy efficiency in the tropics

Whether in India, Singapore or Brazil – Passive House principles also work in tropical climates. The focus, however, changes: while heating is typically not needed in these climates, efficient cooling and dehumidification methods play an important role. A new study by the Passive House Institute gives concrete design recommendations, showing that, in the Passive House of the tropics, energy demand is also drastically reduced. The entire study is now available online on the knowledge platform Passipedia (member area). more


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17 to 18 Apr 2015, Leipzig
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12th Passive House Days
13 to 15 Nov 2015, worldwide
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Component Database

Passive House
Component Database
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New developments

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Seals for Certified Passive House Components
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PHPP 8 (2013)
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EnerPHit - PHI certification for thermal insulation systems
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EnerPHit -
PHI certification for retrofits
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Component Database
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Wall plaque
for certified Passive Houses
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Press releases

Latest press releases

Research & Literature

Passive Houses for different climate zones

Retrofits with Passive House components -
EnerPHit Planner Handbook
(in German)


Passive House Retail Stores now out
Overview of contents
(in German)

PHI Literature

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