Currently, renewable energies and their methods of use are being increasingly discussed due to the energy crisis in some regions and the environmental problems caused by pollution from other forms of electricity generation. One of the alternatives for electricity is solar energy, however, it is known that the cost for the construction of a photovoltaic plant in Brazil is still has a high and not feasible for some regions. Therefore, this work aims to make a study of the use of solar energy in the form of a Grid-Connected Photovoltaic Power System in the Serrana Meso-Region. For the development of this study will be conducted a study of the operation, factors that influence this type of electricity generation and its costs in the city of Lages/SC, this way evaluating its viability.