Avaliação de um sistema de microgeração fotovoltaica conectado à concessionária de energia elétrica na cidade de Medianeira PR

Abstract

Due to the importance of the energy issue, viable alternatives are sought to replace the old forms of generation that causes greater environmental impacts and currently do not supply the energy needs. In the last years Brazil has been experiencing energy shortages, which implies the need to use fossil fuels (pollutants) that increase the final cost of electric energy, and in view of this scenario, renewable energy comes as an alternative. Among renewable energy sources, photovoltaic solar energy has been highlighting, due to its good international acceptance, technical ease of installation (on houses rooftops) and little environmental impact. In this work will be evaluated the photovoltaic system installed in a residence in the city of Medianeira PR, whose investment was approximately R $ 9,000.00 without the installation costs and the electric project costs. The inverter registration showed the 2.3 MWh generation in one year period. With ICMS charges (currently practiced by the state of Paraná), the savings generated were R$ 1,023.23, which would lead to a payback of 8 years and 9 months. In case of Paraná state had adhered to the ICMS exemption, the generated savings would be R$ 1,570.93 per year and the payback time would be 5 years and 8 months.