A genset is a combination of a prime mover, (typically an engine), and an alternator. An engine converts the chemical energy of a fuel to mechanical energy. That mechanical energy is used to spin the alternator rotor; converting mechanical energy to electrical energy. An alternator is made of two main parts; a rotor and stator. Spinning the alternator rotor through the magnetic field between the rotor and stator creates a voltage on the alternator stator, through the phenomenon of electromagnetic induction. When the voltage on the stator is connected to a load, electrical current flows, and the generator produces power.
In sum, the genset creates portable sources of energy. When the generator is used in conjunction with a diesel engine, as just one example, this creates a diesel genset.
Benefits of a well-built, industrial-quality genset are numerous, including: