Análise de viabilidade econômica da implantação de sistema fotovoltaico residencial em Santa Maria-RS

Abstract

There is a growing demand for sustainability in the world, therefore, it is common to look for energy alternatives that are profitable and at the same time renewable. Brazil is a country with great potential for the use of photovoltaic energy, since, in addition to having one of the largest sources of silicon in the world, it has excellent solar irradiation. The main objective of this work is to verify the economic viability and the user's perception regarding the implementation of an on-grid photovoltaic system, in a residence located in the urban area of Santa Maria, Rio Grande do Sul. For the feasibility analysis, indicators such as the calculation of Net Present Value, Internal Rate of Return and Discounted Payback were used. For technical procedures, a documental and bibliographic research was carried out with a quantitative and qualitative approach for the development of the case study. The results obtained point to an economic viability of installing the generator system in the residence, in which it was verified, through the analysis subsidized by the indicators, that the investment presents a return in 7 years and 5 months, showing a percentage of 11.26% above the rate minimum attractiveness used equal to 4.15% p.a., in addition to the environmental prerogative for the consumption of a renewable energy source. The interviewee's reports and perceptions corroborate the results found in this work. The same perceives the contemporaneity of the Solar Energy theme and its relevance as an alternative energy source.