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To evaluate the effectiveness of solar-powered irrigation systems in rural Rwanda under water scarcity conditions.

February 28, 2026Energy EngineeringOpen Access

Evaluation of Hydraulic Losses and Photovoltaic Performance in the Design of Solar-Powered Irrigation and Domestic Water Supply Systems for Rural Rwanda

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To evaluate the effectiveness of solar-powered irrigation systems in rural Rwanda under water scarcity conditions.
Analyzed a photovoltaic (PV) pumping system model serving five market-gardening plots and 25 inhabitants.
Conducted technical and economic evaluations using MATLAB for system design optimization.
Optimized the piping network to assess hydrodynamic performance and energy consumption.
Identified an optimal pipe diameter of approximately 0.30 m for minimizing system costs.
Demonstrated that increasing pipe diameter significantly reduces friction losses and total dynamic head.
Found that the optimal PV system configuration consisted of 12 panels for the required daily water demand of 300.75 m3.

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Evaluation of photovoltaic pumping systems for irrigation and water supply in rural Rwanda, suggesting a sustainable solution.

Ngendahayo et al. (2026) studied this question.

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