Dimensionamento e instalação de sistema fotovoltaico On-grid na propriedade rural Santa Luzia

Abstract

As a free and abundant source of energy, the sun governs all biological activities on the planet and can be used for the generation of electrical energy. With the advancement of technology, the discovery of semiconductor materials, and the development of photovoltaic cells, a range of possibilities has opened up, enabling the growth and expansion of investments and studies focused on the generation and storage of electrical energy from solar sources. Currently, the solar energy market is in full development, thanks to the reduction in equipment costs and the return on investment period. This is due to the possibility of installing grid-connected photovoltaic systems, which allow the generation of energy credits with the utility company. In an effort to reduce monthly electricity costs and achieve self-sufficiency on a rural property, this thesis analyzed a photovoltaic solar energy system on the Santa Luzia rural property in Bela Vista, Mato Grosso do Sul, with a monthly energy consumption of 395.83 kWh. The system was designed to meet this power demand of 3,498.00 W. The homologation process with the energy company Energisa was initiated, and the electrical project was developed, including the issuance of the necessary documents and the selection of equipment. The total cost of the system was $16,000, paid upfront. The installation took three days to complete, and after the system was connected and the meter replaced, Energisa conducted an inspection and approved the generation. The system met the property's demand and the owner's expectations in the 24 months following installation, making it viable as it would pay for itself by the third year. In recent months, as we analyzed the bills, we noticed an increase in consumption and a gradual decrease in the credit balance. Considering this, there is a need to analyze the expansion of the system to meet the additional kWh consumed. Unfortunately, it was not possible to monitor the system month by month due to a lack of connectivity on the rural property, making it difficult to assess monthly behavioral patterns.