Off-grid

Solar Water Pumping + Agriculture

A solar-pumping RFQ should begin with the water duty and pump curve, not with a guessed PV size.

Procurement content reviewed by the Rongkai Solar Procurement Editorial Desk · July 15, 2026

Smallholder irrigationLivestock waterFarm water transfer

Start with

Flow + total head

Confirm

Pump curve + pipe route

Plan

Water storage and service

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Overview

Water demand, total dynamic head, source conditions, pipe route and irrigation timing determine the pumping duty. Those inputs come before any decision on PV modules, controller, drive or water storage. This page helps assemble the supply request around that sequence. Pump selection, hydraulic design, borehole assessment and field installation still require the responsible local pump specialist and installer.

Illustrative equipment context for Solar Water Pumping + Agriculture — Illustrative equipment context only. The final BOM, interfaces, protection and installation arrangement must be confirmed for the actual project.

Common Challenges

Water is needed on schedule, while fuel delivery and grid access may be uncertain or costly.
Head, flow, water source and pipe information are essential; without them, a pump selection is only a guess.
Field equipment has to be serviceable and protected against dry-run, low-water conditions and weather exposure.

Our Approach

Where the irrigation schedule allows, examine water storage before adding batteries as an energy buffer.

Collect the pump curve and site data before matching the PV array, controller, cable, protection and mounting scope.

Keep the equipment request separate from hydraulic installation and borehole assessment responsibilities.

Key Benefits

Water-first sizing
The system starts with required flow and lift, avoiding an arbitrary PV size.
Avoid unnecessary storage
For daytime irrigation, a water tank can often be the appropriate energy buffer.
Field-serviceable scope
Documentation and spare recommendations can be organized for routine local maintenance.

Typical system flow

1PV array
2Pump controller
3Pump
4Water storage / irrigation

Typical Configuration

PV array
Modules and ground structure sized for the selected pump drive and local solar resource assessment.
Solar pump controller / drive
Project-matched controller with required protection features, confirmed against the final pump.
Pump and hydraulic package
Pump model, pipework, and water storage selected by the responsible pump specialist using site data.
Field protection and cabling
DC isolators, surge protection, cable, enclosures, and labels suitable for the installation environment.

What we need for a useful RFQ

This is a practical guide, not a submission gate. Share the available project context first and we can clarify the remaining inputs together.

Start with the Solar Load CalculatorOrganize daily kWh, simultaneous peak and critical backup loads before equipment review.

Water requirement
State daily water volume, required flow, irrigation schedule, and storage capacity.
Hydraulic site data
Share water source, total dynamic head, borehole or surface-water details, pipe length, and pipe diameter.
Site and installation conditions
Provide solar exposure, field layout, cable route, ambient conditions, equipment security, access, civil-work boundaries and local service capability.
Destination and document requirements
Provide the country, delivery point, grid or permit requirements already identified, requested documents, quantity and target date.

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Related disclosed project context

These references explain a disclosed planning context. They do not claim local presence, general market approval, guaranteed supply, or the same outcome for another site.

Malawi
The related confidential irrigation case illustrates why flow, total dynamic head, pump curve and storage strategy must be established before equipment selection; it does not prove water yield for another site.

Procurement and delivery notes

An RFQ needs flow rate, total dynamic head, water source, pipe route, irrigation schedule, and pump preference if known.
Pump, hydraulic, civil, and borehole works must be verified by the responsible local specialists.

Related client project

Confidential Client Project

Malawi · 8 kW PV + 7.5 kW solar pump drive

Solar Water Pumping for Smallholder Irrigation — Malawi

A confidential solar-pumping supply case built around daytime irrigation, water storage and local field maintenance.

Confidential Client Project

Malawi · 25 kW PV + 40 kWh LFP storage

Rural Agro-Processing Solar System — Malawi

A confidential supply case for daytime milling, lighting and processing, with storage limited to agreed essential operations.