Estudo de viabilidade de implementação de um sistema de geração distribuída de energia elétrica produzida por painéis fotovoltaicos: caso da autarquia de água e esgoto municipal de Santana do Livramento

Abstract

Brazil has been presenting large variations in the energy costs of electric energy in the rise of climatic components, showing that the consumer has been paying more for this resource, making it look for alternatives for the smaller expenditures with electric energy. The distribution system of digital video panels comes high all over the world and around the world. With the objective of reducing the electricity costs of a municipal water and sewage system in Santana do Livramento, it was a technical and economic study of the implementation of a photovoltaic system in the locality of the Autarchy. This case study took into account how the life of the machines, the maintenance, the price variation of the kilowatt hour and the values of the flags went through the creation of a spreadsheet in Excel, obtaining technical results of the study of the equipment to supply the consumption, as well as the necessary investment costs. The Internal Rate of Return (IRR), Net Present Value (NPV) and Payback. With the study, it was observed that the photovoltaic system proved to be feasible for the case of the autarchy, because even considering maintenance costs, wich the system may not present, a relatively low investment return time was obtained. The main advantage of the system is not the same as the solar energy rate. As an input into the cash flow, that is, the higher the kilowatt hour, the faster the solar system will give his return.