Size a solar inverter for an array, including the DC to AC ratio.
Deliberately oversizing the array relative to the inverter raises annual yield because peak output occurs for only a few hours a year. Ratios up to about 1.25 lose very little to clipping. Undersizing the inverter is usually more economic than matching it exactly, since inverter cost scales with capacity but peak output is rare.
Solar Inverter Size
Inverter kW = array kW ÷ DC:AC ratio
Inverter kW = array kW ÷ DC:AC ratio Deliberately oversizing the array relative to the inverter raises annual yield because peak output occurs for only a few hours a year. Ratios up to about 1.25 lose very little to clipping.
Undersizing the inverter is usually more economic than matching it exactly, since inverter cost scales with capacity but peak output is rare.
This calculator takes 4 inputs: Array size, Target DC to AC ratio, Acceptable clipping loss, Grid export limit. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.