Inverter Size Calculator

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.

How this is calculated

Continuous inverter watts ≥ simultaneous running watts × safety margin. Surge watts ≥ running watts + largest startup adder. DC current ≈ AC watts ÷ (battery volts × efficiency).

Sources

• NIST: Ohm’s law and SI electrical units