Main primary energy sources in Serbia are coal, oil and natural gas, oil shale and renewable energy sources. The share of high quality primary energy sources (oil and natural gas) is less than 1% of total geological reserves, while the rest of 99% consists of different types of coal, with highest share of lignite - over 95%. Estimated technically available renewable energy sources potential in Serbia is 5.65 Mtoe, where 1.054 Mtoe of biomass and 0.909 Mtoe of hidro-power are already used. Speaking of energy efficiency in final energy consumption sectors of the Republic of Serbia holds unenviable position comparing to EU countries. Since 2000 there is series of strategic and legal documents that are adopted and they are governing the operation of energy sector as well as implementation of energy policy at state level. The Law on energy efficiency was adopted in March 2013. It regulates implementation of energy management system within industrial sector, on the local level (cities and municipalities) as well as in public buildings sector. The purpose of secondary legislative is to define, in more details, terms for obtaining status of designated company within the system for energy management in industrial sector and in public companies, training programs for energy managers, as well as method of appointing energy managers in designated companies.