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Agriculture & irrigation 2 min read

Solar Irrigation in Egypt: The Complete Guide to Replacing Diesel on Farms

How solar irrigation pumps work, how to size the array to well depth and water demand, and how much a farm saves compared with diesel.

GPS Engineering Team
Solar Irrigation in Egypt: The Complete Guide to Replacing Diesel on Farms

On new and desert farmland many growers rely on diesel generators to run well pumps, with fuel and maintenance costs that never stop. Solar irrigation removes the problem at its root: the sun drives the pump directly, with no fuel and very little maintenance.

Key takeaways

  • A solar pump runs from sunrise to late afternoon — the main irrigation window.
  • System size is calculated from pump power, well depth and daily water volume.
  • Payback against diesel is often 2–4 years.
  • The system can be expanded to power barns, lighting and equipment.

How a solar irrigation system works

  1. Solar panels generate direct current.
  2. A solar pump inverter (VFD) feeds the pump and adjusts its speed to the available sunlight.
  3. A submersible or surface pump lifts water to a tank or straight into the irrigation network.
  4. An elevated tank or reservoir acts as a “water battery” for later use.
0litres of diesel per day
2–4years typical payback
20+years of panel life

Sizing the plant

  • Pump power (HP or kW): panels are typically 1.3–1.5 times the pump rating.
  • Well depth and water level: deeper wells need more power.
  • Daily water volume by crop and irrigation method (drip, sprinkler, flood).
  • Required running hours and the summer peak season.
Pump size Approx. array size Panels (620 W)
10 HP (7.5 kW) 10–11 kW 16–18
20 HP (15 kW) 20–22 kW 32–36
40 HP (30 kW) 40–44 kW 65–72

How much does a farm save?

A diesel generator running a 20 HP pump for several hours a day burns a lot of fuel every month, plus oil, filters and breakdowns. A solar system eliminates fuel and reduces maintenance to panel cleaning and periodic checks. As diesel prices rise, the return improves every year.

Important considerations

  • Dust: we choose a tilt that aids partial self-cleaning and set a cleaning plan. See cleaning panels in desert conditions.
  • Safety: lightning protection and full earthing of structures.
  • Theft: anti-theft fixings, lighting and sometimes fencing.

More than irrigation

A hybrid design can run pumps by day plus barns, cold stores and lighting, with batteries for night loads. Also read solar for poultry and livestock farms.

How much would your plant save?

Get system size, cost and expected savings in under a minute.

Open the calculator

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GPS

GPS Engineering Team

GPS engineers have designed and built solar plants across Egypt for 15+ years. Here they share what they learn in the field.

Frequently asked questions

Does a solar pump work on cloudy days?

It runs at reduced output, and cloudy days are rare in Egypt. A storage tank covers any temporary shortfall.

Can I keep my existing pump?

Usually yes, if it is in good condition, with a pump inverter matched to its rating and type.

Can the pump run at night?

Night pumping needs batteries, a grid connection or a backup generator. Storing water in a tank is usually the cheapest solution.

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