The Self Power Generator video you just watched was invented by Regnault Bamiji of Glyms Industries Ltd has two compartments, the generating Unit and the supply unit. The Generating Unit generates and store excess energy, while the supply unit supply power for domestic use. when the supply unit that supply power for domestic use drops in voltage to certain level due to usage, the intelligent system in the supply unit trigger a release of power from the excess energy stored from the Storage compartment and it instantaneously charge up the depleted supply voltage, hence power is always available to supply energy for domestic use. Technical details are not exposed here .

NOTE: When the system is working and supplying electricity, it generates Excess energy which is stored in its DC compartment. And when the system is idle, it recharge itself from the stores energy in the Large DC compartment.. This is an ultra unique technology for power generation without the need for the grid energy, solar or wind energy to charge battery.