Solar Water Pump Sizing Calculator

Size a solar-powered water pump system based on flow rate, total dynamic head, and solar resource.

Input Parameters

Results

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Hydraulic Power
W
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PV Array Size
W
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Panels (400W)
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Daily Output
liters
Note: Solar pumps operate only during sunlight hours. Submersible pumps: 45-65% efficiency. Surface pumps: 50-70% efficiency.

Reference

Q (m³/s) = Daily Volume / (Sun Hours x 3600) Hydraulic Power = ρgQH = 9810 x Q x H [W] Pump Input = Hydraulic Power / Pump Efficiency PV Size = Pump Input / 0.80 derating