The implementation of the ‘energy renovation project’ of the Ploce Police Station, at Trg King Tomislav 14, will result in a 20 340 kWh/a reduction of annual primary energy consumption in buildings by 101 662.78 kWh/a and a 82.27 % reduction in energy consumption for buildings heating 307 878.29 kWh/a and 74.73 % respectively after project implementation, reducing CO2 emissions to the atmosphere of 70.30 %. After the energy renovation, the total costs will be reduced by HRK 158735,70/70.30 %. The impact of the energy renovation of the building is also reflected in the increase in the standard of use of the building and the creation of a more pleasant and healthier environment for space users.