Be ready for system power failures with a standby generator. These stationary power generator systems provide peace of mind and safety against the hazards that can be caused by a sudden loss of power such as CO poisoning, fire, or electrical shock. Maintain systems, whether mission critical systems such as medical equipment, sump pumps, and security lighting, or comfort systems that preserve food freshness, or power HVAC systems to maintain A/C and furnace system temperatures in a building, and more. Items vary by voltage, kilowatt, phase, amps, and dimensions, among other considerations. Manufacturers include Generac and others. Fora mobile backup power supply option, see our portable generators and to keep your generator operating at peak performance, see our generator parts.