A portable diesel generator (portable DG) is a compact and mobile power generation unit that uses diesel fuel to produce electricity. Designed for easy transportation and operation, it consists of a diesel engine, an alternator, and essential controls mounted on a portable frame or wheels. Portable DGs are commonly used for temporary power supply in outdoor events, construction sites, camping, and emergency backup during power outages. They are valued for their durability, fuel efficiency, and ability to provide reliable power in locations without access to the grid.