The Association for Sustainable Development has successfully implemented the project "Energy modernization of the Zemun CSO building". As a very challenging project, since it is important for the CSO Zemun, the City of Belgrade and Serbia, a building that is protected by the Institute for the Protection of Monuments, the project was a great challenge.

The task of the ASOR team was to perform an energy audit of the building, to prepare a study of the current situation with proposals for improvement in accordance with the law (minimum 2 classes), as well as to develop a Certificate of energy performance of the building - Energy Passport. The team led by Prof. Dr. Dušan Ignjatović and associate EnergyConcept, successfully implemented the project.