A Generac Whole Home Generator is a back-up electrical system that automatically supplies power to the electrical circuits of your home within seconds of a power outage. These generators operate on natural gas or liquid propane, so they will continue to provide power whether you are at home or away. A Generac Generator creates more amps than those sold in retail stores, allowing you more power and comfort during emergencies. When your power is interrupted, the generator will automatically come on, keeping your lights on through any storm or emergency.