Caterpillar is the world’s largest manufacturer of generator sets, offering the largest range of specifications available.  For prime, continuous or standby power service, Cat commercial and industrial diesel generator sets deliver reliable, clean, economical power. Each Cat diesel generator set is designed, engineered and manufactured for optimal performance. All major components are tested individually; and once the generator set is assembled, the complete unit is tested at and above 100% of rated load for operation and safety.