As of September 2015, Generac offers 61 home backup, 45 business standby, 26 portable and 18 mobile generator models. The Generac website details information on all available models separated by their uses.
Generac separates its generator models by the size and type of the unit. As of September 2015, Generac has 61 home backup generators listed that are operated by natural gas, liquid propane or diesel fuel. Prices begin at $1,799 for the 7-kilowatt PowerPact base model and can range up to $29,990 for the commercial 150-kilowatt unit. As of September 2015, there are 26 portable units available on the Generac website with prices ranging from $319 to $3,699.