Generac, which was founded in 1959, is currently the leading producer of home backup generators. It was the first to design reasonably priced home standby generators and the first engine created especially for the demands of generator use.

The largest selection of power products, including portable, home, commercial, and industrial generators, are produced by Generac. For backup power applications up to 2 MW, Generac is also the top designer and manufacturer of manual and completely automatic transfer switches and accessories.