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Solar planning tools

Paneli · Pampu ya maji · Nguvu

Estimate pumping energy, flow and solar array capacity from water demand and head.

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Live calculation
Pampu ya maji · m³/h
4 m³/h
Pampu ya maji · Nguvu
0.97 kW
Kila siku · Pampu ya maji · Nishati
4.84 kWh
Paneli · Nguvu
1.21 kWp
Planning estimates, not equipment approval. Review the assumptions below before choosing a system.

No location or tariff is detected automatically. All results use the values you enter.

This guide is available in English and Urdu. English is shown below.

What is this tool used for?

Use this tool for a preliminary solar pumping plan based on how much water you need each day and the pressure and lift the pump must overcome.

How to use this calculator

Enter daily water volume, total dynamic head, pumping hours, combined pump and motor efficiency, peak sun hours and solar/drive losses. Total head includes friction and required delivery pressure as well as vertical lift.

Understanding your results

Use the flow and head requirements to compare real pump curves. Estimated electrical energy and array capacity are planning figures; they do not guarantee startup or flow during weak sunshine. Pump, drive, array and water storage need to work together.

Njia ya kukokotoa

Hydraulic energy kWh = 1,000 × 9.81 × volume m³ × total dynamic head m / 3,600,000. Electrical energy = hydraulic energy / combined efficiency. Power = electrical energy / pumping hours. Array kWp = electrical energy / [sun hours × (1 − losses)].

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Kabla ya kutumia matokeo

Total dynamic head includes lift, friction and required discharge pressure expressed as water head. Match a real pump curve to the calculated flow and head. The energy-sized array does not guarantee instantaneous motor power, startup or flow during low sunlight; check the drive, array and water storage together.

What should I check before using this estimate?

Total dynamic head includes lift, friction and required discharge pressure expressed as water head. Match a real pump curve to the calculated flow and head. The energy-sized array does not guarantee instantaneous motor power, startup or flow during low sunlight; check the drive, array and water storage together.

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