The focus of this paper is on the critical metric for helping to identify the accuracy and consistency of evaluations for photovoltaic systems performance. This included a comparison between monocrystalline and amorphous photovoltaic module technologies in the equatorial zone at a height of more than 2500 meters above sea level based on the performance indices of the IEC61724 standard. The study is carried out comparing the behavior of each technology under climatic variations that affect the production of energy such as temperature and irradiance on photovoltaic modules, as well as the losses associated with the performance ratio of the plant. In addition, a comparison is made taking into account the energy produced by different technologies, considering the maximum power that each panel arrangement can produce. The obtaining of a performance factor of 88.83% for a photovoltaic plant with a mix of technologies is discussed.