Impacto econômico para consumidores com micro geração fotovoltaica e optantes por mudança tarifária do Grupo A para o Grupo B

Abstract

The aim of this work is to perform the dimensioning of a photovoltaic solar plant with an installed power of less than 75kW (micro generation), aiming at the production of electric energy for a consumer unit in order to reduce its electricity costs to the minimum rate possible and verify its economic viability in two different billing groups. Group A (high and medium voltage) with its tariff called binomial due to the collection of two monetary values applicable to power demand and consumption of electricity and Group B (low voltage) with its tariff called monomial due to collection monetary value applicable only to the consumption of electricity. Thus, the Cresesb database was consulted to find the global solar radiation (kWh / m² / day), on the inclined plane in the region of Divinópolis­MG, the consumer's address. The average daily energy consumption in the last 12 months was calculated and the calculation methodology was used in order to measure the power of the photovoltaic system. Finally, an economic feasibility study was carried out using important financial analysis tools, namely payback (time to return on investment), IRR (internal rate of return) and NPV (net present value) applied with formulas in MS Excel program. It can be seen that in all economic analyzes, the financial viability of the project becomes more attractive to consumers in Group B.