The architecture best suited to most of India would be a set of rooftop power-generation systems connected via a local grid. Not only the roof top area but also outer surface area of tall buildings can be used for solar PV power generation by installing PV modules in vertical position in place of glass panels to cover facade area. Such an infrastructure, which does not have the economy of scale of mass, utility-scale solar-panel deployment, needs a lower deployment price to attract individuals and family-sized households. The cost of high efficiency and compact mono PERC modules and battery storage systems have reduced to make roof top solar PV more economical and feasible in a microgrid