Viabilidade econômica de projeto de geração de energia fotovoltaica: avaliação de diferentes cenários de expansão da instalação comercial

Abstract

In this work an economic feasibility analysis of grid connected photovoltaic power generation projects is performed. This study was conducted in a commercial establishment located in the city of São Luiz Gonzaga-RS, which has an average monthly consumption of 5699 kWh, where the electricity distributor, RGE Sul, is responsible for the supply. To carry out the feasibility analysis study, three different scenarios were proposed for simulation, one scenario considering the current average consumption of electricity, a second scenario with a 30% increase in the electricity load of the establishment and, finally, considering a 50% increase in load. For each scenario the photovoltaic system was sized to meet the consumption, and in both scenarios of load increase, the simulated increase occurred from the fourth year, considering, based on the researched literature, that an increase in average consumption is expected. between 2019 and 2023. The following factors were considered for economic analysis: project life, operating and maintenance costs, kilowatt hour price variation, and purchase of financing for the purchase of the photovoltaic system. The economic viability projects were analyzed using economical engineering methods such as: discounted payback, net present value (NPV) and internal rate of return (IRR). In both scenarios all projects proved viable.