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If you are a farmer or property owner, installing a solar water pump is one of the most practical investments you can make. Done right, it delivers reliable, low-cost water for years. Do it wrong, and you might be looking at a bunch of costly repairs, poor performance, and a lot of frustration. But then, if you’re reading this solar pump installation guide, you are safe from the latter.
Whether you’re drawing water from a borehole, a shallow well, or a dam, having a proper solar pump installation guide to work from makes all the difference between a system that thrives and one that underperforms from day one.
In this guide, we walk you through everything you need to know before starting to set up your solar pump system.
Start With a Proper Site Assessment
Before purchasing or installing any equipment, ensure you have the site of installation assessed. This step is not optional; it is the foundation on which everything else is built. This explains why Irri-Hub insists on booking a site visit as the very first step to every farm service they offer.
In the assessment, one thing you want to cover first is the water source. For a borehole or solar deep well pump setup, you need to know the static water level (how deep the water sits when the pump is off), the dynamic water level (how deep it drops under pumping), and the borehole’s yield rate, meaning how many liters per hour it can reliably produce.
Installing a pump that draws faster than the borehole can recover will invariably lead to pump damage and dry runs.
You will also need to know the total dynamic head (TDH), which refers to the actual pressure the pump must overcome to deliver water to the point of storage. TDH combines the vertical lift from the water source to the outlet, friction losses in the pipes, and any additional pressure needed at the delivery end. Getting this figure right is critical to choosing a pump with the correct power rating.
For surface water sources like dams or rivers, assess the water level variations across seasons, particularly during dry months when levels drop significantly.
Solar Panel Sizing and Placement
Once your water demands and pump specifications are clear, sizing the solar array appropriately can be the next crucial item, a key piece in your solar pump installation guide. The number of panels your system will need depends on the pump’s power rating and your daily pumping hours.
In Kenya, the orientation of the solar panels matters enormously. Solar panels should face north, not south, as would be the case in locations in the northern hemisphere, to capture maximum sunlight.
The tilt angle should approximate your latitude, typically between 1° and 5° for most parts of Kenya, given the country’s proximity to the equator. Even small deviations can reduce system output noticeably.
Shading is another critical factor. Avoid locations near trees, buildings, or any structure that is likely to cast shadows on the panels during peak sun hours. Even partial shading on one panel can reduce output across the entire array.
Understanding Your System Components
Your solar pump installation guide is not complete without a clear labelling of all the components your system needs. That said, a complete solar pump system consists of several components that must work together correctly. These typically include the following:
- Solar panels – they generate DC electricity from sunlight
- Pump controller or MPPT (Maximum Power Point Tracking) controller – this optimizes power transfer from panels to the pump motor and protects against voltage fluctuations
- The pump itself – this is either a submersible unit for boreholes and deep wells, or a surface pump for shallow water sources
- Rising main pipes – HDPE or uPVC pipes rated for the working pressure, running from the pump to the surface
- A storage tank – to hold pumped water during peak sun hours for use at night or during cloudy days
- Safety check valves – to prevent backflow when the pump is off
Key Pre-Installation Checks
Before the installation crew arrives on site, you should be sure to confirm certain things. Here are the pre-installation checks to include in your solar pump installation guide.
Water quality: Have the water from the borehole or well tested. High sediment, sand, or mineral content affects the selection of the pump to use. Some pumps are not suited to sandy or chemically aggressive water.
Pump placement depth: For a solar water well pump system or borehole application, the pump should be positioned at least 3 to 5 meters above the bottom of the borehole to prevent it from drawing sand and sediment from the bottom.
Pipe sizing: Under-sized pipes are bound to cause excessive friction losses, reducing water flow and straining the pump motor. Ensure the pipe diameter matches the system design specifications.
Cable sizing: The submersible cable running from the controller to the pump must be correctly rated for the current load and the installation depth. If the cables are undersized, they will often cause voltage drop and damage to the motor over time.
Integrity of mounting structure: For ground-mounted panels, the frame must be securely anchored to resist strong winds, particularly in open farm environments.
Original Reliable Solar Water Pumps in Nairobi, Kenya at Irrihub Ke, +254 112 148 880
If you are looking to buy a reliable solar water pump in Kenya, Irrihub has some nice offers you may consider. We sell solar pumps as independent units or as complete solutions (kits). The complete solutions include:
- Submersible brushless pump
- 600W solar panels
- Delivery pipe 25MM
- 70M head
- Flow rate of 2300 L/hr.
- Solar panels
- Pipes and cables
- MPPT controller
- Full installation
Permitting And Professional Installation
In Kenya, drilling a borehole requires a permit from the Water Resources Authority (WRA), and the completed borehole should have a driller’s report documenting the depth, casing, yield test results, and water quality.
This report constitutes an important part of your solar pump installation guide, helping with selecting the right pump, and should be requested before specifying any equipment.
For the solar pump installation itself, always engage a qualified technician. Improper wiring, wrong pump placement, or incorrect controller configuration can void warranties, damage your equipment, and even create safety hazards.
A reputable installer like IrriHub will always test the flow rates, check the controller settings, and verify that all connections are correctly made before handing it over to you.
Need help designing or installing a solar pump system for your farm or property? IrriHub Kenya offers expert solar pump solutions, from site assessment to full installation. Get in touch with our team today.
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