The cost of a home generator installation can vary greatly depending on the size and type of generator you need, as well as the complexity of the job. Generally speaking, the larger and more complex the job is, the higher the cost will be. Installation costs can range from a few hundred dollars to several thousand dollars. Repair cost depends on the type of generator, the extent of damage, and the complexity of repairs needed. Generally, you can expect to pay anywhere from $100-$500 or more for repair services. It’s always best to consult with a qualified service provider to get an estimate of the total cost.