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The Smart Grid (SG) is a technological transformation from conventional electric grid, electro-mechanically controlled system, to smart, intelligent, and electronically controlled system called the “Smart Grid” (SG). There are about 20–30% losses present in the conventional electric grid due to substandard operations at generation, transmission and distribution side. The major players in the transformation are: (a) increased electricity cost, (b) aging infrastructure, (c) carbon footprint, (d) Green House Gas emissions, (e) climate change, and (f) less efficient electrical network. The promising features of the Smart Grid are: (a) intelligent de-centralized control, (b) resilience, (c) flexibility, (d) sustainability, (e) digitalization, (f) intelligence, (g) consumer empowerment, (h) green energy, and (i) smart infrastructure. The fundamental issues and open challenges in the SG are lack of awareness, consumer acceptance, cyber …