Sustainable Construction, LEED as a Green Rating System and the Importance of Moving to NZEB

In this study, in order to evaluate the possibility of achieving Net Zero Energy Building (NZEB) goal, history sustainable construction, and available green-rating systems with specific focus on Leadership & Environmental Design (LEED) rating system were explained. LEED was selected as most prevalent industry analyze its efficiencies/drawbacks specifically regards energy efficiency. The goal study is answer an important question reasons NZEB concept when has come up a detailed certification process, which somehow beneficial reduction. defined evolution very energy-efficient approach it requires that buildings have zero balance annual basis. This paper explains questions detail consists three parts: first part building including second deficiencies performance last movement towards target.