Energy Efficiency in Building Sector in Croatia - Preliminary Energy Studies

The paper deals with analysis of results achieved through selected energy audits and preliminary energy studies of public buildings in Croatia, performed as a part of the project "Removal of barriers for energy efficiency in Croatia". The project is being implemented by the Project Unit of the United Nations Development Program. Over 1200 energy audits and preliminary energy studies have been produced since the beginning of the project. Those studies comprise technical evaluation of energy efficiency of current building system components, such as building envelope, heating, ventilation and air-conditioning system, domestic hot water system, lighting and other electrical installation or consumers. Studies comprise evaluation of building performance, taking into consideration real operation conditions, determination of a list of measures for energy efficiency improvements (EE measures) including calculation of savings potential, investment costs and payback time for each proposed EE measure. The part of each study is also the plan of the further steps that will lead to realization of suggested EE measures, including definition of needed steps to establish continuous control and improvement of energy and water consumption locally in examined building (establishment of local Energy Management System). A group of selected preliminary energy studies for public buildings with the complex energy systems has been analyzed among all performed studies in order to estimate the current state and to define the most efficient measures and their impact on energy consumption and CO2 emission.