Abstract
Buildings are one of the major energy consumers globally. The climate change and global warming are symptoms of increasing Green House Gases emis- sions because of growing energy consumption. Majority of electricity pro- duced from fossil fuels, coal, which are the source of GHG emission. Here renewable energy and efficient measure of energy consumption reduction can give the opportunity to do save our earth by reducing GHG emission level. The integrated solution of energy demand and environmental impact for build- ing is the net zero energy buildings. This paper reviews the NZEBs initiative around the world in a different perspective such as passive design of building, active approach incudes energy efficient measures and electricity production by renewable energy particularly for buildings. Further this paper highlights, optimizing and modelling using different tools and software used for imple- menting NZEBs. This paper suggests the possible ways of implementation of NZEBs and its benefits in residential, commercial and educational buildings for various climate zones and recent case studies results.