Research at the IGE covers a wide study area ranging from studies on the energy efficiency of individual building systems to research projects on an urban development scale. Central points of the research approach are the consideration of the overall system, the holistic approach and the thinking in systems. In addition to the operational phase of buildings, their manufacture, construction and disposal are also taken into account. research at the institute is divided into the following three main research areas:

Building performance
Urban Design and Energy
Architecture and Energy

The BEEP (Building Energy and Environmental Performance) method developed by Prof. Cody, which he presented at the 9th REHVA World Congress in Helsinki in 2007, was the world's first evaluation methodology that allowed the holistic energy performance of a building to be determined (as the relationship between the quality of the indoor climate and the energy required to maintain it), thus enabling different design options to be compared objectively.

Of essential importance for the work of the Institute are the connections and the symbiotic interactions between the basic research and teaching at the Institute, the applied research and practical experience of the Energy Design Cody office and the resulting networking with some of the most renowned architectural offices in the world and the research and teaching at the ED energy_design unit at the University of Applied Arts Vienna, also headed by Prof. Cody. The work of the institute is continuously presented in public lectures and written publications in Austria and abroad (over 100 lectures and about 50 publications during the last 10 years).