How much does it cost to install a standby generator at home?

Cost varies by your home’s power needs, fuel (natural gas or propane), and whether you want whole-home or critical-circuit coverage. A technician will confirm final pricing after an on-site load assessment and design. Castle Electric offers free estimates for whole-house Generac installations in Norwood and Newton. We handle consultation, generator selection, professional installation with an automatic transfer switch, and verification via load testing. Financing options are available. We install major brands and are certified to maintain and repair Generac units. <br/> <br/> Updated: 2026-01-02 00:00:00 <br/> <br/> Need help in Quincy, MA? Call (781) 762-9891 or book online.