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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


Passive House Conference showcases solutions for energy revolution

There is a huge potential for saving energy in the building sector; how this works in practice will be demonstrated at the 2014 International Passive House Conference, taking place in Aachen, Germany. On 25 and 26 April, experts from all over the world will be presenting the latest projects and practical solutions. An accompanying fair will provide building owners and property developers with an overview of the possibilities available. Among the highlights of the event is the presentation of the Passive House Award. (photo: Hermann/ats). Programme

Passive House Days


Component Award proves Passive House windows profitable

The winners of the first ever Passive House Component Award have been selected - a total of twelve Passive House windows will receive recognition. The real winners, however, are the building owners, for the results of this international competition demonstrate that it is possible to save money with highly efficient building components. The Award will be presented at the International Passive House Conference taking place from 25 to 26 April in Aachen, Germany. more

Passive House Days


Passive House Award 2014: Finalists confirmed

The finalists of the Passive House Award 2014 have again proved that world-class architecture and the Passive House Standard complement each other perfectly. An international jury made a first selection of 21 projects from approximately one hundred submissions. The winners in a total of six categories will be announced on 25 April in Aachen, Germany, at the 2014 International Passive House Conference. A list of all finalists can now be viewed online on

Passive House Days


Ten-point programme for climate protection in the building sector

Climate protection starts at the local level – and energy efficiency in buildings is one of the more important tasks in this respect. To assist municipalities, the Passive House Institute has published a position paper on the topic. The paper sets out a ten-point programme with specific recommendations detailing how cities and communities can take their commitment forward in an effective way. One of the focal points is the Passive House Standard, which enables energy savings of up to 90 per cent. more



Update available for Passive House Planning Package PHPP

A new update for the globally established tool for planning energy-efficient buildings is now available: PHPP 8.5. Among the new features is the capability of working with up to 500 entry fields for areas and windows, especially useful for larger projects. An updated list of Certified Passive House Components has also been included. Perhaps most importantly, this update ensures PHPP compatibility with the new 3D tool designPH, available at a greatly reduced introductory price through 10 April 2014. more / order now

Passive House Days


New Passive House categories also rate building energy gains

The efficiency of the clearly defined Passive House Standard has been proven thousandfold – to also offer a reliable means of orientation regarding the additional use of renewables, the Passive House Institute now introduces new categories. These will not only take energy demand into account, but also energy supply through, for example, solar panels. In this way, Passive House offers an attractive solution for the energy revolution while serving as the basis for the "Nearly Zero Energy Building" of the European Building Directive. more

Passive House Days


Certificate for first Passive House supermarket in Germany

Although fresh food needs continuous refrigeration, achieving a low energy demand is still possible. This has been demonstrated by the first Passive House supermarket in Germany: In the pilot project, highly efficient equipment reduces energy consumption while a well-insulated building envelope ensures that the waste heat generated by the refrigeration system is enough to cover space heating needs. Altogether, this Passive House supermarket promises 30 % in energy savings as compared to conventional supermarkets. more

Passive House Days


Monitoring confirms efficiency of Passive House indoor pool

The municipal swimming pool operator in the German city of Lünen ventured into unchartered terrain when it decided to build its indoor swimming pool to the Passive House Standard some years ago. This courageous step has now paid off, as the monitoring results show. The savings in terms of energy consumption, for heating as well as for electricity, are substantial. Details will be presented at the International Passive House Conference. A general article on the topic is now available on Passipedia. Press Release

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 with just a few clicks. more / Press Release / order now

Passive House Days


Passive House Days provide insights with a holiday feeling

The doors of hundreds of Passive House buildings were opened to the public during the second weekend in November. Three hotels in the Alps were among the more than 600 buildings participating in the Passive House Days event, offering a first-hand Passive House experience with a holiday feeling. In the German Allgäu and Austrian Vorarlberg regions, visitors were able to see for themselves that the Passive House level of comfort fulfils even the highest demands of holidaymakers. more


World's first Passive House office tower certified

High levels of energy efficiency are all the more important when it comes to high-rise buildings. For the first time ever, an office tower has achieved the Passive House Standard in Vienna. The certificate was presented by Susanne Theumer of the Passive House Institute on the 20th floor of the building with a prime view of the old city. The glazed facade on the bank of the Danube Canal rises almost 80 metres high. About 900 people will work in this building - with superior indoor air quality and minimal energy consumption. 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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25 to 26 Apr 2014, Aachen
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11th Passive House Days
7 to 9 Nov 2014, worldwide
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New developments

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New seals for Certified Passive House Components
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PHPP 8 (2013) now out!
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EnerPHit - New PHI certification for thermal insulation systems
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EnerPHit -
New PHI certification for retrofits
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The new 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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