Estudo de viabilidade técnica e econômica de implantação de um sistema solar fotovoltaico conectado à rede em uma empresa de São José dos Pinhais-PR

Abstract

Instability in the Brazilian energy scenario have brought some changes, historically. In 1973, hydroelectric plants were built because of the oil crisis, and in 2001 the low levels of reservoirs made it necessary to implement policies to reduce consumption. Today, it is known about the growing energy demand, and initiatives such as the 2030 Agenda, encourage the world’s energy matrix diversification. So, it is inevitable to think about photovoltaic energy and decentralized generation as a way of avoiding crisis in the future, mainly for commercial buildings that operate almost concomitant with the period of solar energy generation. In this context, the objective of the study is to analyze the technical and economic feasibility of implementing a on grid photovoltaic solar system. The first step is a review of the photovoltaic effect, dominant technologies in the market, its connection with sustainable buildings and the generation potential of the state of Paraná. Then, it comes the case study. It is analyzed the feasibility of having a on grid solar system for the company CASA VIVA PRE MOLDADOS LTDA that sells pre-fabricated houses. The company’s electric energy bill when evaluated, provides the information that photovoltaic generation can supply the annual average of 434 kWh/mês. Therefore, with the Atlas Solar do Paraná and the RADIASOL program, the photovoltaic power needed is estimated in 4,23 kWp according to the radiation on the best roof plane. In this way, 12 modules with 365 W and a 4-kW inverter were chosen to provide the energy required. Thereby, the technical feasibility is validated. Also, the average value between three companies is used as budget and the project payback is calculated. Finally, it is come to the result that R$ 22.501,46 is economically viable to set up the on grid solar system with 6 years and 1 month payback.