Análise econômica da instalação de um sistema fotovoltaico, conectado à rede, em uma casa na cidade de Tabuleiro do Norte -ce

Abstract

In recent decades the growth of clean energy generation has increased considerably. Whether by political, financial, environmental or social pressure, several business classes and also the residential sector have adopted the use of solar collectors, such as photovoltaic panels for energy generation. Due to the increase in energy efficiency, the reduction of implantation and operation costs, and the achievement of economic stability in Brazil, micro-scale generation systems, aimed at small businesses and residences, have had a strong growth in the last two decades. Several small and medium sized companies are currently operating selling modules or installation kits that require little technical knowledge, facilitating the expansion of this market. However, to have an estimate of the payback time it is necessary to do a study based on real cases, in order to extrapolate the results to other cases, with the same technical and economical characteristics. For this it was developed in this work a case study for the economic analysis of the cost/benefit, as well as the return time of the investment, applied to a generation installation based on energy generation using photovoltaic panels, being located in the city of Tabuleiro do Norte - CE. The economic tools used for the data analysis were: Internal Rate of Return (IRR), Net Present Value (NPV) and Payback, being evaluated the initial investment, and the cash flow inputs and outputs. Thus the feasibility of installing a photovoltaic system for microgeneration proved favorable, since it was found a NPV with positive sign and an IRR of 9%, which implies that the investment is considered attractive by presenting revenues greater than expenses.