The project “Increasing energy efficiency and renewable energy sources in production facility and energy renovation of buildings in Saponia d.d. Osijek” with the aim of increasing energy efficiency, use of renewable energy sources and energy renovation will ensure savings of delivered energy to the part of the project unit “production facility” by 40.07 % and part of the project “building” by 63.08 %, i.e. the total savings of delivered energy by 4 472 795.32 kWh and the reduction of delivered energy from distribution networks by producing the same from renewable energy sources by 659.440 kWh and will significantly affect the sustainability of the environment by reducing CO2 emissions by 1 241.67445 t/g.