A few years back power houses generated power and the grids distributed it. There used to occur load shedding based on peak demand and if there used to be any scope power generated was ramped up.
Simple Grids to supply us the power energy to run our homes, our industries.
Today we are working day and night towards finding other sources/alternatives for power generation and unlike the power few years back this power is decentralized and hence the need for smart and new breed grids.
One major challenge associated with renewable energy is that the power is dependent on weather conditions, if the conditions are conducive we get lots of power. Now unlike our conventional power plants this creates a problem. Hence, smart grids with power storage is of extreme importance today.