Análise da viabilidade técnica e econômica de um sistema fotovoltaico residencial: comparação entre dados dimensionados pela empresa que realizou a instalação versus dados executados pelo cliente

Abstract

In recent years, electricity tariffs in Brazil have changed due to climate factors, because the country's energy matrix is predominantly based on generation from water sources, consumers increasingly pay more expensive by the supply of electricity. It's problematic that makes companies and consumers seek alternatives in the market to minimize their energy spending. The generation of electricity through photovoltaic modules has shown exponential growth, as it presents a relatively low investment compared to the life of the equipment. The present study performs a comparative analysis of a residential photovoltaic system with a power of 3.96 kWp installed in the city of Alegrete-RS. The analysis period corresponds to the first year of system operation and aims to perform a comparative analysis of technical and economic data taking into account the data sized by the company with those executed by the client. First in the technical part comparing power generation, injected energy analysis and remote self-consumption and later financial analysis, using the tools of economic engineering, such as net present value (VPL), internal rate of return (IRR), simple payback, discounted payback, based on a minimum attractiveness rate (TMA). It was concluded that the project was viable and the comparison proved equivalent in the technical and economic part.