The Nomad Power System download by Hank Tharp. How to save electricity at home? Learn more from book The Nomad Power System. Unfortunately, no a single person can manage to save on energy by simply pressing a button or a switch. Of course, you can completely turn off the electricity supply, but how long will a person live in a de-energized apartment? It is unlikely that someone will be satisfied, so the question of how to save electricity at home is of great concern to many people.