In this work, some aspects of the performance of photovoltaic (PV) systems and wind generators are discussed. The performance of technologies of different types of wind generators is briefly explains, considering the advantages and disadvantages of each type, and for different wind speeds. Technologies that improve the performance of different PV systems are also presented in a general way. In
... [Show full abstract] addition, a case study is presented where is evaluated the use of wind generators and PV systems for industrial small-scale applications in the Tomar region (Portugal). The purpose of this comparison is to ensure their technical and economic evaluation leading a better choice in towards to achieve building zero net energy.