Inverter Sizing Calculator

Determine the right inverter capacity for your solar array.

DC System Size

DC:AC Ratio

Inverter Efficiency

Temperature Derating

Tab to move between fields

Inverter Size

8.33 kW

≈ 8 microwaves

Max AC Output

7.68 kW

≈ 8 microwaves

Peak Clipping Loss13.7%

Est. Annual Clipping4.1%

How to Use This Calculator

Enter the total DC capacity of the solar array in kW (sum of all panel wattages).
Set the DC-to-AC size ratio (clipping ratio) — typically 1.1–1.3 for optimized systems.
Input the maximum power temperature coefficient of the panels.
Review the recommended inverter AC output capacity in kW.
String inverter sizing must also account for voltage (Voc) and current (Isc) limits — confirm with the manufacturer.

How the result changes with DC:AC Ratio

DC System Size: Total DC capacity of your solar array.
DC:AC Ratio: Ratio of DC array size to AC inverter size. 1.2 is typical.
Inverter Efficiency: Inverter DC-to-AC conversion efficiency.
Temperature Derating: Power reduction from inverter overheating in hot climates.

Identify Input Parameters
4 parameters
DC System Size = 10, DC:AC Ratio = 1.2, Inverter Efficiency = 97, Temperature Derating = 5 = 4 input(s) provided
Calculate Inverter Size
Inverter Size
8.33 = 8.33
Calculate Max AC Output
Max AC Output
7.68 = 7.68
Calculate Peak Clipping Loss
Peak Clipping Loss
13.7 = 13.7
Calculate Est. Annual Clipping
Est. Annual Clipping
4.1 = 4.1