The PUC “Gradska toplana” Niš will provide sustainable heating for the “Mika Antić” Primary School and the nearby sports center. The current outdated heating system, which uses fuel oil, will be replaced with a new one that uses natural gas, reducing harmful gas emissions and environmental impact. The solution also includes the installation of thermal solar panels for heating of sanitary water. This will improve the energy efficiency of the buildings and ensure a more reliable heating system.