Reduction in energy consumption and CO2 emissions by retrofitting an existing building to a net zero energy building for the implementation of SDGs 7 and 13

This work aims to reduce the energy consumption of existing buildings through retrofitting and converting them into net zero (NZEBs). Various retrofits for an academic building were modeled analyzed using REVIT software. Energy was reduced approximately 34% retrofits, a Solar System 41.6 kW integrated meet demand, consequently (NZEB). Furthermore, environmental economic analyses conducted, results show reduction 32.8 metric tons CO 2 emissions per year as result building, it building. The envelope electrical appliances have payback period 2.96 2.62 years, respectively, whereas proposed has only 2.3 years. Moreover, rated Leadership in Environmental Design (LEED) rating tool, qualifies silver certification after integration renewable sources (RES). contribute achieving Sustainable Development Goal (SDG) 7, save climate variations, which leads 13.