The deficit in electricity and high diesel costs affects the pumping requirements of community water supplies and irrigation; so using solar energy for water pumping is a promising alternative to conventional electricity and diesel based pumping systems. Water pumping system has a long history, so many methods have been developed to pump water. Manual pumping is the common method for many years, but it is impractical for many applications, such as unmanned or remote wells. Many pumping systems require an independent power source like an engine or electric power. Engines can provide the higher amount of the water, but they are requiring the fuel and regular maintenance. Due to minimize the cost the alternative source is used such as solar energy. This paper presents the study of a water pumping system powered by photovoltaics (PV) solar. The purpose of this article is to design, optimum sizing the batteries and the PV modules for the water pumping system and also to study about the characteristic of charging and discharging the batteries. Optimum sizing from SANDIA National Laboratories were used in sizing this system. The system based on the standalone system configuration which contains PV module, charge controller, batteries, and load. Based on this research, the design and sizing are able to running the system within the desired autonomy. The pattern of charging and discharging also been captured during this research.

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