Generator sizing & cost calculator
Figure out roughly what size standby generator you need and what it's likely to cost, before you request quotes.
Prefer to be walked through it? Try the planning assistant: it asks one question at a time and shows license-checked installers near you.
Generator sizing & cost planner
This is an educational estimate, not an electrical load calculation, engineering plan, quote, or installation recommendation. Final sizing and installation must be completed by qualified professionals. Use this to get in the right ballpark before you request quotes.
Optional, for local pricing