Solar Pump Sizing Calculator

Calculate your Solar pump sizing by enter your daily water need, head and Motor & Pump efficiency. Based on that calculate PV solar size.

Enter your daily water need, head and site data. The tool sizes pump electrical power, PV array and optional battery backup.

Water requirement

Available sun (peak sun hours per day) Pump operation strategy Head (total dynamic head) — meters

Efficiencies & system losses

Pump efficiency (%)

Motor efficiency (%)

PV system derating (panels, wiring, controller) (%) Panel wattage (W) Select battery backup (optional)

If you want battery sizing, enter desired backup hours. Depth of discharge & inverter losses are used below.

Calculation details