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Grundfos on Efficient Irrigation Pumping in Africa

Abdulaziz Daghestani, Area Sales Director, Water Utilities, MENA, and Country Director for Saudi Arabia, explains how energy-efficient pumps, variable speed technology and digital monitoring can help African farmers reduce irrigation costs and conserve water.


What are the biggest challenges currently facing farmers in Egypt when it comes to irrigation pumping, particularly around water availability, energy costs, equipment reliability and maintenance?

These are challenging times for agriculture. Input costs have risen considerably, and for crops such as vegetables, maize and potatoes, many farmers are currently struggling to break even. With margins under that kind of pressure, every expenditure is weighed carefully. At the same time, farmers must make the best use of the water available, as each season depends on delivering water to the crops at the right time and in the right quantity.

This is shaping the decisions farmers make about irrigation. Many are choosing lower-cost equipment with a service life of around five years, rather than a solution designed to last fifteen years, and in the current climate they consider that a risk worth taking. The reasoning is understandable, although in my experience it tends to cost more over time, through higher energy consumption, more frequent replacement and a greater risk of failure during the season.

Farmers continuing with their existing systems face their own pressures. PVC piping and fuel have both become very expensive, raising the cost of operating and maintaining an installation, and many are watching closely to see whether relief on fuel costs becomes available.

For this reason, we encourage farmers to consider the lifetime cost of the complete system, not only the purchase price. Financing will be an important part of the answer, and we are exploring options that could make solar pumping solutions more accessible.

What is driving farmers to upgrade their pumping systems, and what are the main barriers preventing wider adoption of more efficient technologies?

In most cases, the decision to upgrade follows an existing problem: repeated failures, rising energy costs, or a system that no longer meets the crops’ requirements. When comparing options, farmers recognise that the purchase price is only part of the total cost. A cheaper pump that consumes more energy or needs replacing sooner can ultimately cost more.

The principal barrier is the initial investment, as it is difficult to commit additional funds today for savings realised over time. Farmers also need confidence that they are selecting the right pump, and that installation, spare parts and servicing are available locally.

Our aim is to make that decision more straightforward. The Grundfos SPE47, for example, is a direct replacement for existing SP46 pumps, so the rest of the installation does not need to be modified, limiting cost and disruption. It is also designed for improved energy efficiency and a long service life. Clear information on operating costs, together with access to financing, further helps farmers assess whether an upgrade is right for them.

Where do the biggest energy losses typically occur in an agricultural pumping system, and what are the most practical measures farmers can take to reduce them?

In many cases, the losses begin at the pump. A pump that is incorrectly sized, or operating outside the flow and pressure the system requires, will waste energy. Leaks, blockages and poorly designed or maintained piping also place additional load on the pump.

Visible leaks or a decline in performance are easy to identify, but determining whether a pump is correctly sized and operating efficiently often requires technical expertise. Municipalities and irrigation authorities can help identify where support is most needed, while Grundfos and our local partners work with agricultural operators to assess pumping systems and recommend suitable maintenance or upgrades. Digital monitoring adds a further layer. Tracking energy consumption, flow and pressure reveals changes early, and together with regular servicing and access to local technical support, it helps catch faults before they interrupt irrigation.

Above all, the pump and the distribution network should be assessed together. A new pump will not deliver the expected improvement if leaks or restrictions remain elsewhere in the system.

strong>What role can variable speed pumping play in reducing energy consumption and adapting pump output to changing irrigation demand? Where does it make the greatest difference?

A variable speed pump adjusts its output to the system’s requirements at any given time, rather than operating at a constant speed. As irrigation demand varies, reducing pump speed when less water is required lowers energy consumption.

The benefit is greatest where demand varies considerably and a fixed-speed pump would otherwise supply more water than needed. The outcome depends on the pump, the network and how the system is operated, so equipment should be selected according to the requirements of each installation.

This year, we introduced the SPE47, a variable speed pump within our SP47 range designed for groundwater applications, including irrigation. As it is compatible with existing SP46 installations, it offers operators a practical route to variable speed operation where this suits their system.

How are remote monitoring, sensors and digital technologies changing the way farmers manage irrigation pumps? What data should farmers be paying the most attention to?

The most important development is that farmers can now irrigate according to conditions in the field rather than a fixed schedule. A soil moisture sensor indicates whether the soil already holds sufficient water, avoiding unnecessary pumping and conserving both water and energy. Monitoring the pump also allows operators to detect faults early.

I would recommend focusing on data that supports decision-making. Soil moisture indicates when to irrigate, flow and pressure confirm whether water is being delivered correctly, and energy consumption and pump condition reflect how well the equipment is performing.

For larger irrigation networks, our GENIECON controller brings this information together on a single platform, connecting different parts of the system, including other manufacturers’ equipment and older installations. Through Grundfos Connect, operators can monitor multiple sites remotely, identify issues sooner and respond without being on site.

Egypt has invested significantly in water infrastructure and national water-management programmes, including CROWN and the National Water Resources Plan. How can these initiatives translate into practical improvements at farm level?

These programmes establish the direction. Results are achieved when investment reaches the systems farmers use every day, through improved on-farm irrigation and drainage, suitable equipment, and support to operate and maintain it.

CROWN, the Climate-Resilient On-Farm Water Management in the Nile Valley project, addresses precisely this, with the aim of improving on-farm irrigation efficiency, reducing water losses and strengthening climate resilience. The National Water Resources Plan 2017–2037 sets the longer-term direction for water management and irrigation modernisation.

At farm level, this means properly designed pumping systems, irrigation methods suited to the crop and field, and better information on when and how much to irrigate. Local technical partners ensure equipment is suited to the application and can be serviced after installation. Ultimately, success will be measured on the farm, through efficient water use and dependable system performance.

Looking ahead over the next five to ten years, what technologies, financing models or industry partnerships do you believe will be most important in making efficient irrigation pumping more accessible to African farmers?

Experience shows that no single organisation can achieve this alone. We need to work with governments to align solutions with national water priorities, with financial institutions to make financing accessible to farmers, and with local distributors and service partners for installation and ongoing support. Progress depends on all of them working together.

Financing will be particularly important, as the initial cost remains one of the most significant obstacles. Flexible payment options, supported by clear information on energy use, maintenance and equipment life, can help farmers recognise the value of a more efficient system.

Efficient pumps, variable speed systems and digital monitoring will each contribute, provided they are applied where they address a genuine need. Across Africa, the right solution will depend on the crop, water source, energy availability and farm size. The objective is clear: efficient pumping that farmers can afford, operate and maintain.

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