Against the predominant background of global warming, rapidly diminishing energy resources, exponential population growth, increasing geopolitical instabilities resulting from the uncertainty of the future energy supply situation together with the fact that buildings are responsible for at least 40% of the world's energy consumption, good architecture is not possible without a good energy concept. Buildings represent a large part of what is probably one of the biggest problems of our society - namely the fair distribution of the resources available to us. Architecture can therefore be a major part of the solution. Never before has this discipline been offered a comparable opportunity to play such a central role in the history of mankind. Good architecture is always a concrete expression of the cultural values, priorities and hopes of a society. But now it can also provide the physical answer to this existential challenge. By definition, sustainable development cannot be accompanied by a simultaneous loss of architectural quality in our built environment. A building with little architectural quality and a good energy concept therefore makes no real contribution to a sustainable future. Research and teaching at the IGE focuses on maximizing the energy performance of buildings and cities and developing architectural and urban design projects that are inherently highly energy efficient by optimizing their shape and structure. 

  • TEAM

    Head of Institute

    Consultation hour acc. to agreement


    Consultation hour: Wednesday, 11:00 - 12:00






    Student assistant



    Office hours:

    Monday - Friday, 09:00 - 12:00



    Consultation hour: Friday, 11:00 - 12:00


    Project Assistant/Lecturer


    Student assistant



    Consultation hour: Wednesday, 10:00 - 11:00




    Student assistant



    Architecture is not only responsible for a large proportion of the world's energy consumption - architecture is energy. A line on paper that represents an architectural intention often implies decades or centuries of associated energy and material flows. At the Institute for Buildings and Energy (IGE),  energy-efficient architecture is understood as a triad of minimized energy consumption, optimal indoor climate and excellent spatial qualities - both at the urban and individual building level.


    The experience and the accumulated know-how from the practice of the consulting firm Energy Design Cody through collaborations with architectural offices such as Coop Himmelb(l)au, OMA, Miralles Tagliabue, Delugan Meissl, MVRDV, to name but a few, flow back into basic research but also into the teaching activities at the institute via lectures and impulse lectures, so that students benefit directly from this experience and knowledge.


    Since 2010, the concept has been to prepare a special topic of focus for the coming academic year with the aim of focussing attention in teaching and research on a specific topic for a limited period of time and to exploit synergies between the various activities. At the end of the year, the results of the teaching and research activities are summarized in a brochure and presented to all members of the faculty together with the chosen topic for the coming academic year.





    Technical University of Graz

    Institute of Buildings and Energy

    Rechbauerstrasse 12 / II

    8010 Graz



    Tel +43(0)316/873-4751

    Fax +43(0)316/104751





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    Institut für Gebäude und Energie

    Rechbauerstrasse 12/II

    8010 Graz





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Building Energy and Environmental Performance Tool

Prof. Brian Cody







How we as a society evaluate, reward and punish measures, strategies, concepts and their results will significantly influence the overall development of architecture. Therefore, the development of methods for the evaluation of energy efficiency in the built environment is an important factor for this further development, which has so far been fatally underestimated by architects. Energy efficiency is the minimization of the energy demand of a building and the achievement of optimal conditions in its rooms. Unfortunately, the term "energy efficiency" is often misunderstood today, especially in the field of construction, and the reduction of energy demand is often confused with an increase in energy efficiency. Energy efficiency is the relationship between output (benefits) and input (resources). It is about the benefit one gets from the "consumed" energy. In the context of the climatic performance of buildings, energy efficiency should be understood as the relationship between the quality of the indoor climate and the quantity of energy required. Previous instruments for regulating the energy efficiency of buildings only deal with energy demand and not with energy efficiency. The BEEP (Building Energy and Environmental Performance) method was developed to determine the actual energy performance of a building and to be able to really compare different design options. Results of case studies examined with this method clearly show that low energy consumption cannot be equated with high energy efficiency and that such a more complex assessment methodology would lead to a different future development in architecture than the methods used today. The method developed within the framework of this basic research project was presented to the scientific community at an international congress in Helsinki in June 2007. The results of further investigations regarding different variants for the refurbishment of an office building were published in 2010.



January 2006 - May 2010



Cody, B.: “Building Energy and Environmental Performance tool  BEEP, Entwicklung einer Methode zum Vergleich der tatsächlichen Energieeffizienz von Gebäuden“, in: HLH Fachzeitschrift, Verein Deutscher Ingenieure, Springer-VDI-Verlag, Düsseldorf, Januar 2008



Cody, B.: “Building Energy and Environmental Performance Tool BEEP, Development of a method to determine the true energy efficiency of buildings”, Conference Proceedings, 9th REHVA World Congress Clima 2007, Helsinki, Finnland, 2007




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