Nanotechnology has been in a massive use in the last two decades in many fields specially the architecture and construction field. Applying nano technology in architecture is taking place and has become the biggest challenge in our time. The challenge of nano architecture is to improve the material properties, adding new properties or production new materials which used in architecture design of the building or in construction phase. The study aims to reduce the energy usage of the building by using nano architecture and to achieve one of the environmental sustainability factors.The research adopts the descriptive theoretical approach of nano technology and nano material in field of architecture and its impact on the energy use of the building. This followed by the second analytical part which examines the nano materials and nano devices through examples of global sustainable projects and nano architecture applications which leads us to a huge difference in the architecture design and reduces the total energy usage of the building. In conclusion, the research shows the effect of using nano material and devices on the building energy use which can help to save the environment by reducing the energy consumption.