A diesel generator is a diesel-electric system, a diesel engine that powers a electrical generator to produce electricity. Diesel generators are located at places where there is no electricity supply from the electrical grid or for emergency supply if there is problem with the normal electricity supply.
Diesel generator is often referred as generator set or genset for short, which is a combination of diesel generator with its supporting equipment, such as base, canopy, control system, sound attenuation, circuit breaker, starting system, exhaust system, diesel fuel supply etc.