Solar energy is a renewable source, as are wind, hydraulic and biomass energy. It can be harnessed through photovoltaic cells: electronic equipment responsible for converting solar radiation into electrical energy. Brazil has one of the largest photovoltaic solar generation functions in the world, and this can replace other non-renewable energy sources in applications bringing benefits to its users, particularly in remote areas and filling. Among the applications of solar energy, there are: water heating for domestic use, industrial processes such as the use of an oven, refrigeration in the form of heat and electricity generation for the residential, commercial and industrial sector, in particular for agricultural activities such as irrigation of plantations. Pumps driven with diesel generator set are normally used in agriculture for irrigation as the user is usually far from a connection point in the electrical network. However, the use of this energy source entails problems such as irregular and expensive supply, high maintenance costs for pumps and emission of polluting gases. Water pumping systems using solar energy have been a satisfactory option to replace diesel-powered pumps in this application, as they meet the demands in areas where connectivity to the national integrated system (SIN) is not available, does not emit polluting gases or generates noise during its operation and contributes to the restoration of pastures. A system was designed to meet the hypothetical case of a 1.3 (ha) sugarcane plantation in the city of Duque de Caxias, Rio de Janeiro. From the water demand (m3) for the sugarcane field, a numerical modeling was used to develop a routine without Matlab software to integrate the PV system with the hydraulic pump-circuit set. Observe the results that the most important parameter for determining the performance of PV modules is solar irradiation and a curve obtained by numerical modeling for hydraulic installation is very close to the curve in the literature.