The article discusses how using Building Information Modelling (BIM) can help make buildings more energy efficient. The researchers studied a two-story building in Nagpur and found that using certain types of walling materials can reduce energy consumption. By simulating the building model with a BIM tool, they discovered that low embodied energy masonry units can lower both embodied and cooling energy demand. Overall, the study shows that using information modelling can improve a building's energy efficiency by analyzing it beforehand.