Análise da viabilidade econômica na adesão de tarifa branca em consumidores residenciais de forma independente e associada à geração distribuída fotovoltaica

Abstract

This paper presents an economic feasibility study on migration or adhesion to the “White Fare” for residential consumers, based on a comparative analysis with the conventional fare, where the preservation of consumption habits is considered. Five different electric energy consumption ranges were considered, evaluated for using only the power grid to feed the load and for using the power grid with photovoltaic-based distributed generation. These analysis were made using the Homer software (Hybrid Optimization for Electric Renewables), where, according to the smallest Net Present Cost, defines the most feasible option economically speaking for each range of consumption. For the power grid only proposed methodology, the costs for each type of fare are evaluated according only to the electric energy fares, wherein, for the five different ranges considered, three of them got the White Fare as the best option. As for using the power grid with distributed generation, solar energy was considered as a renewable resource, where the photovoltaic system was dimensioned so that the generated energy was just enough that the month of December had an energy bill the same as the availability cost. In a general context, the power grid with distributed generation topology is universally agreed upon both of the fare types, for all ranges of consumption considered. When this comparison is made strictly between the two types of fares, it was pointed that the conventional fare is the most viable for all ranges of consumption considered.