Corporate headquarters is also home to a 265,000 square foot manufacturing facility. Completely updated in 1999, this building houses a wide range of manufacturing equipment, as well as a large engineering lab, indoor test cells, and outdoor weather testing facilities. Prototype design, testing and production of water-cooled generators are done at Waukesha. Rotor and stator production is accomplished with winding machines designed and built in-house, automated varnish systems and a state-of-the-art computer numerically controlled (CNC) machine shop.

Generac's Eagle facility is a 240,000 square foot showcase of its manufacturing capabilities that has earned ISO 9001 certification for its quality inspection processes. Our heavy-duty double walled metal base tanks and weather-resistant enclosures are made at Eagle, where skilled workers and robotic welders combine efforts to ensure top quality components. It also features extensive test facilities for both gensets and low voltage switchgear, where our equipment undergoes rigorous test routines to make sure it's worthy of the Generac name.

Whitewater is a 300,000 square foot manufacturing facility focused on the production of Generac's trademark OHVI® air-cooled engines, RV motor home generators and Guardian® brand home standby generator sets. The plant features a state-of-the-art flow-through design, with eight production lines and built-in adaptability. Whitewater also boasts a full engineering test laboratory, with both sound and emission test cells. By using cutting-edge evaluation equipment, Generac is able to self certify its units to comply with EPA and CARB regulations.

The newest Generac facility in eastern Iowa is a 145,000 square foot manufacturing plant that specializes in the production of high-end gensets ranging in output from 500 to 2000 kilowatts. Like the Eagle and Whitewater facilities, it has been constructed with adaptability and expansion in mind.