The project focuses on the energy renovation of the building of the Osijek County Office in Osijek, achieving savings in the budget energy for heating of 71.69 %, in primary energy of 66.92 %, reducing CO2 emissions annually by 68.08 %, modernising the building’s design and improving the quality of life and working in the building with a positive impact on the environment. The target group of this project is composed of judges, prosecutors and deputy prosecutors, officials and employees within the judicial authorities of the Ministry of Justice and citizens.