Generator calculator
Whole-Home vs Essentials Load Planner
Compare an essentials backup plan with a whole-home planning anchor using generator-focused load guidance.
Screening estimate only.These calculators use only the values you enter. A licensed electrician's load calculation is authoritative before equipment is selected or installed.
Screening result
Fine Print and Sources
Screening estimate only. These tools use only the values you enter and simple planning math. A licensed electrician's load calculation is authoritative for equipment selection, transfer equipment, permitting, fuel piping, and final installation scope.
Generac describes essential circuits as the refrigerator, lighting, well pump, and critical outlets. It also identifies 22 kW as an industry standard whole-home planning anchor around the 2,000 square-foot range, with final sizing dependent on actual loads.
- Generac generator sizing guide: cites running wattage, starting wattage, essentials guidance, professional load analysis, and the whole-home 22 kW planning anchor.