Use our interactive solar water pump sizer to estimate the pump and PV array size for your borehole, shallow well, river, or dam. Enter your daily water demand, source details, and total dynamic head to get an indicative system sizing report.

1. Water Demand & Location

Tell us what you need the pump for, how much water you use each day, and where the system will be located.

Application type

Household Livestock Irrigation Commercial / Other

Daily water demand Litres per day. Use the helper below or enter your own value.

Calculate from usage

People @ 50 L/person/day

Livestock count

Animal type

Irrigation acres

Water applied mm per week

County / Region (Kenya)

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Map could not be loaded. Please select your county from the dropdown above.

No location selected

Peak Sun Hours (PSH) kWh/m²/day. Auto-filled from map/county; you can override.

2. Water Source & Total Dynamic Head

Describe the water source, lift height, and pipe run so we can estimate the total head the pump must overcome.

Diagram showing total dynamic head components for a solar water pump system

Source type

Borehole Shallow well River / Dam Other

Water source yield Litres/day. A warning appears if this is below your demand.

Static water level / pump depth Metres

Tank / delivery height above source Metres

Optional pressure requirement Bar (1 bar ≈ 10 m head)

Pipe length Total pipe run in metres

Pipe diameter

PV panel wattage

Estimated Total Dynamic Head (TDH): —

3. Your Recommended Solar Water Pump

Based on the information you provided, here is an indicative pump and PV sizing estimate.

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Required flow rate

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Total Dynamic Head

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Recommended pump

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Pump power

—

PV array size

—

Number of panels

—

Daily energy

—

Indicative cost

What this means

Complete the calculation to see your recommendation.

Estimated Monthly Water Production

Water production Daily demand

Assumptions & notes

Peak sun hours are an annual average for your selected location.
Total Dynamic Head = water depth + delivery height + pressure head + estimated pipe friction loss.
Pump efficiency varies with pump type and is indicative only.
PV sizing assumes ~25% system losses (wiring, inverter/controller, temperature, soiling).
Costs are indicative only; actual quotes depend on equipment brands, borehole depth, pipework, and site survey.
This calculator is a planning tool, not a substitute for a professional engineering design.

MAJISOLAR

Solar Water Pump Sizing Report

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Project Details

Application type	—
Location	—
Coordinates	—
Daily water demand	—
Peak sun hours	—
Source type	—
Source yield	—
Static water level / pump depth	—
Tank / delivery height	—
Pipe length & diameter	—

Recommended System

Required flow rate	—
Total Dynamic Head	—
Recommended pump type	—
Pump power	—
PV array size	—
Number of panels	—
Panel wattage	—
Daily energy production	—
Indicative system cost	—

Summary

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Solar Water Pump Sizer