The purpose of the article is to verify the performance of a wind and photovoltaic (PV) hybrid plant with battery bank for water pumping. The system can be used inisolated areas without access to electricity grid. The plant is installed at the Federal University of Ceará, in Fortaleza, Brazil. The plant consists of a wind turbine (1 kW - permanent magnet) and 4 polycrystalline PV modules (87 Wp each), 5 batteries (150 Ah each) and 1 power electronic converter (1 kW). A datalloger is used for acquisition and storage of data (wind speed, global irradiance, water flow and electrical data). The present study uses data from four non-consecutive days in November/2014 and December/2014; in the first day only PV and the battery bank supply the load. The recorded mean flow was 25.26 L/min, showing little variation, even with intermittence of the resources, condition minimized by the energy storage. As a consequence of the energy storage, the hybrid system shows low operation request, enhancing the life cycle and consequently reducing the plant replacement costs.