This study presents an evaluation on the performance of a water pumping system with a small wind turbine used in the energy supply on a small farm. The equipment was installed at project CASA, located at the State University of West Parana (UNIOESTE) in the city of Cascavel-PR. In this paper is presented the implementation of the system and it emphasizes the determination of the energy development in the system adopted, aiming to assess the viability of using wind turbine as a source of renewable energy generation at the location being studied. With an average wind speed of 2.26 m.s-1 the wind energy available per day showed a daily average of 5.98 kW.h-1. The total energy available during the observation days was 83.7 kW.h-1 and the electric energy generated during the period was 38.6 kW.h-1, which provided 33% of system efficiency. The total volume pumped with the electric energy generated was 13,645 liters of water, with an average daily volume of 974 liters. The energy generated on the 13th day was the highest within that period. The maximum level of water pumped was 1179 liters on the 1st day. The lowest volume was 356 liters on the 9th day. The system is viable to be used in the water supply of a small farm or irrigation system.

Keywords: wind energy; renewable sources; wind turbine; water pumping