Many technologies have been and are being implemented to make the microgrid model successful in many cities. It is incapable of reaching the scale as predicted because of several obstacles. Smart Nano-grid will cover these lacunae and requirements. The paper illustrates the value of nano-grids in the launch of smart cities by examining the progress of nano and microgrids, alternative energy storage technologies, energy applications, smart gadgets in smart cities. The survey also addressed the implementation challenges associated with a technical and economical point of view. This will provide a wider vision for the researchers to focus on the monitoring and control of nano-grid technologies.
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