Hawthorne Power Systems is the authorized sales, rental, parts and service dealer for Cat electric power, prime power, back-up power and stand-by power equipment, industrial engines and integrated systems components in Waipahu, Hawaii. Hawthorne Power Systems offers Cat diesel generator sets, Cat gas generators sets, Cat automatic transfer switches, Cat switchgear, Cat uninterruptible power supply (UPS), Sullair air compressors, Cat marine propulsion engines, Cat vocational trucks, Cat truck engines, Cat diesel fire pumps, Cat industrial gas and diesel engines and more.