Análise de viabilidade econômica da implantação de um sistema de energia híbrido na área rural de Candiota

Abstract

The development of new methods for the conscious and efficient use of energy has been occurring in increasing demand over the years. Hybrid systems consist of two or more sources of electricity that aim to obtain a reliable source of energy supply, whether they are connected or not to the distribution network. The production of biogas in the rural area appears as an alternative for the region of Campanha Gaúcha, due to the extension of these areas which includes equine farming. These residues can be processed in biodigesters to produce biogas. Biodigesters are an alternative for the processing of organic matter, being one of the mechanisms that allow this production. The solar plates have the function of capturing the luminous energy of the sun and transforming it into thermal or electrical energy. Wind energy comes from the speed of the winds, where wind energy is transformed into useful energy, being a way to obtain energy in a renewable and clean way, since it does not produce pollutants. Based on these aspects, this work designed a hybrid system for generating electric energy of the solar wind-biodigestion type for installation in a rural property located in the city of Candiota-RS. For this, the necessary materials and equipment were selected, installation costs were estimated and revenue, NPV and IRR were calculated. The total cost of materials and equipment was R$ 19,496.81 with NPV and IRR of R$ 9,770.82 and 12%, respectively. If the projected system operated continuously, 682 kWh/month would be generated, which would fully supply the property's demand, however, considering the variations in solar and wind radiation, considering an operating time of 60%, the generation will be 409 kWh, yet still supply the necessary demand. The investment in the project is recovered after 6 years of operation of the plant. It was demonstrated that the project is economically viable and possible to be installed at the study site also contributing to the minimization of environmental impacts.