ABSTRACT
This research sought to improve the level of energy consumption in large office buildings through improved technological installation of efficient appliances and passive design in order to reduce the negative impact of buildings to their physical environments. Energy efficiency during the buildings operational period may be achieved through passive means by incorporating natural features like day light, air circulation, and so on, this is because the main cause of energy consumption in a functional building are those building components used to ensure the comfort of the users and the functionality of the building in general. These components are strongly related to the natural features mentioned. The methodology employed is computer simulation , case studies were carried out (in which one was simulated), and relevant information sourced from pertinent literature and the internet were done. In the course of the research, the building was designed to maximize the use of passive elements such as daylight, air flow, sun light, and so on. Based on computer simulation, the proposed design was able to achieve about 76% energy reduction as compared with the simulated case study. The principle of energy efficiency should be considered since it makes sure that greenhouse gas emission is reduced, this was achieved by more of soft landscape so as oxygen is increased around the site thereby creating a microclimate around the site.