Cost to Install a Generac Generator A generator makes a great addition to your home. As anyone who has experienced a power outage knows, these things never happen at a convenient time. If you are in the early stages of considering a generator, there are probably some questions you would like answered. The first, how much does it cost to have a Generac generator installed, is easily answered by consulting with a Generac dealer. We provide free estimates as well as financing options. in Electricianswith generac-generator-installation