Abstract: When building houses, office structures or modern plants, financial specialists are concerned about the development costs, as well as more regularly at the future expenses of utilization. They can put more in the first place, to make sure that before long the venture will pay itself back and begin bringing benefits. Considering such speculators decentralized control, change and oversight frameworks were made - called smart home frameworks. This is the idea of smart home. Nano grids are small micro grids, typically serving a single building or a single load. Navigant Research has developed its own definition of a nano grid as being 100 kW for grid-tied systems and 5 KW for remote systems not interconnected with a utility grid. Nano grids mimic the innovation that is rising up from the bottom of the pyramid and capturing the imagination of growing numbers of technology vendors and investment capital, particularly in the smart building and smart transportation spaces, says Navigant. In other ways, nano grids are more conventional than micro grids since they do not directly challenge utilities in the same way. Nano grids are restricted to a single building or a single load, and therefore do not bump up against regulations prohibiting the transfer or sharing of power across a public right-of-way. From a technology point of view, perhaps the most radical idea behind nano grids is a clear preference for direct current (DC) solutions, whether these systems are connected to the grid or operate as standalone systems, according to Navigant.

Keywords: Smart grid, Nano grid, Smart Homes, MHTG-micro hydro turbine generator set.