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solar pumping

Solar Pumping 101: the what, why, and the how

Kristoffer Welsien's picture
Solar water pumping system.
Image credit: Energy & Development Group.

Access to a safe, sustainable water supply is a growing concern in every region of the world. In many communities, groundwater is being pumped by diesel fueled systems, which are both expensive and can be difficult to maintain. In communities where electricity is scarce, solar can be a part of the solution.
The highest demand for solar pumps is among rural off-grid areas, currently underserved, or served by costly fuel-driven pumps. Solar pumping is most competitive in regions with high solar insolation, which include most of Africa, South America, South Asia, and Southeast Asia; but the technology can operate successfully in almost any region of the world.

Solar Irrigation Pumps: A New Way of Agriculture in Bangladesh

Mehrin Ahmed Mahbub's picture
Solar Irrigation Pumps in Bangladesh
Habibur shares a content smile as he tends to his rice field. Photo Credit: World Bank

On a recent field trip to northern Bangladesh, the smiles of Habibur, a young man working in a rice field under the scotching sun caught my attention. Habibur, 28, looked content amidst the wide green vista of fields.  
I learned that his life had not been easy. His father died when Habibur was around four years old, and the family had no land. His young widowed mother started working as a day laborer to raise her only child. Habibur began working too in his mid-teens. Mother and son struggled, but they managed to save some money.  They first bought a cow, and later Habibur leased land for rice cultivation. This is a common practice in rural Bangladesh, where the yield is divided between the farmer and the owner of the land.

The case for solar water pumps

Richard Colback's picture

The cost of solar technology has come down, way down, making it is a viable way to expand access to energy for hundreds of millions of people living in energy poverty. For farmers in developing countries, the growing availability of solar water pumps offers a viable alternative to system dependent on fossil fuel or grid electricity. While relatively limited, experience in several countries shows how solar irrigation pumps can make farmers more resilient against the erratic shifts in rainfall patterns caused by climate change or the unreliable supply and high costs of fossil fuels needed to operate water pumps. Experience also suggests a number of creative ways that potential water resource trade-offs can be addressed.