Self-induced power-cuts and some other ideas to help energy crisis..

Simple questions that could lead to better usage of electricity:  What happens if all the homes with UPS (inverter) get off the main grid between 6PM & 8PM accross the country and run on their UPS? (Self-induced power-cuts) What if we can add intelligence to our UPS so that they can detect the usage of electricity and decide if it is   required to stay connected to the grid or not?  What if we can program these UPS so that they automatically cut off from the grid and power the home till they have a specific amount of charge (say […]