Electrical · Standby Generator Sizing
What size whole-home generator do you actually need?
Tell us the home and what you want to keep running when the grid drops. We add up the real electrical load and size the standby unit - no guessing, no oversizing.
Recommended generator
-
kW standby
Calculated running load
-
watts
Load worksheet
Regional variancePricing and technical assumptions vary by region. This calculator uses averaged inputs for labor rates, materials, climate zone, and utility costs. Actual figures in your market may differ materially. For a location-specific quote, contact a licensed contractor in your area.
✓
Request received.
A specialist will confirm your sizing and quote.