Generator installation costs in Keller typically range from $12,000-$18,000 for most residential installations. This includes the generator unit, automatic transfer switch, concrete pad, professional installation, permits, and all required electrical connections. Several factors influence final pricing: generator size and features, distance from your electrical panel to the installation location, gas line requirements, and any electrical panel upgrades needed to support the additional load. We provide detailed written estimates that break down all costs before beginning work. We also offer financing options through established lenders to help make backup power more affordable for Keller families. Many customers find the investment worthwhile for the peace of mind and property protection, especially after experiencing extended power outages during severe weather events.