Abstract: A synchronous inverter combines direct current energy from a minor source, such as a wind driven generator, with alterneting current energy from a commercial power source, in a home electrical distribution system. This inverter uses a linear audio amplifier to produce an alternating current voltage that is continuously essentially the same as the commerical power voltage in voltage wave shape, amplitude, phase and frequency. The amplifier energy level output is controlled by the voltage level from the minor energy source. The compatibility of the inverter with commercial power permits connection of the inverter by merely plugging its power cord male plug into a selected home electrical distribution system female receptacle.