Imagine that you want to swim 100 meters below 1 minute (energy efficiency) in a swimming pool (the swimmer is the electric load). Besides the necessity of good physical condition (proper electrical installation), you would need an excellent environment of the pool; however, as you swim to the other side of the pool, you will create waves with your arms and legs movements.
Imagine you are doing this action again, but in the meantime, 20 more swimmers (electrical network) have been added to the pool, and with the movement of their arms and legs, they will generate additional waves (harmonics and disturbances created by other loads, such as machines, inverters, computers, etc…) that will produce the effect of resisting your movement, or in other words, there will be more resistance while you swim to the other side of the pool.
So, if you want to reach the other side of the pool again in less than 1 minute, you will have to increase your effort, and therefore more energy will be consumed to do the same work due to the increased resistance.
Thanks to EP-X system, the waves crashing against you from the other 20 people, who jumped into the pool, will be reduced. The effect described, what happened in the pool (electrical network) also happens in any real electrical system, and thanks to the installation of EP-X, the disturbances originating from other electrical loads will be substantially reduced, saving energy and stabilizing the electrical network.