The building energy consumption has increased over the past decade due largely to population growth, increased average temperatures and more frequent extreme weather events as a result of the influence of human activities on climate change. There is increased pressure on maintaining a comfortable environment for building occupants while minimizing building energy use. This study attempts to quantify the building energy savings potentials using the concept of near zero energy building (NZEB) protocol by validating model of building through the collection of real data for existing buildings using DESIGNBUILDER SOFTWARE version 6.1.8.021 simulation tool to evaluate energy performance of a prototype building. The Design Builder model building performance and energy consumption were validated using real data from the case study, from the results, energy consumed by the building in the dry season

Keywords : NZEB; HVAC; Green House Gases; Energy Efficiency; Global Warming