Calculator
Critical Loads Planner
Accuracy note: The arithmetic on this page is deterministic from your inputs. Solar production, code, utility, incentive, and savings outputs are estimates unless you supply exact equipment specs, tariffs, shade data, and local requirements.
Enter up to five must-run loads. Use nameplate ratings where possible.
Inputs
| Load | Watts | Hours/day | Start surge W |
|---|---|---|---|
Result
How this is calculated
Daily backup kWh = Σ(watts × hours) ÷ 1000. Peak running watts = simultaneous must-run watts. Surge watts = peak running watts + largest motor-start adder.