A standby generator is a permanently installed power system designed to provide automatic backup electricity during a power outage. It is typically connected to a building’s electrical system and powered by diesel, natural gas, or propane. Standby generators are equipped with an automatic transfer switch (ATS) that detects power loss and seamlessly starts the generator to restore power within seconds. Widely used in residential, commercial, and industrial settings, they ensure uninterrupted operation of critical systems like lighting, HVAC, medical equipment, and IT infrastructure. Standby generators are valued for their reliability, long-term durability, and ability to handle large power loads.