Viabilidade econômica da geração distribuída para residências brasileiras: a influência do novo marco legal

Daniel Leal Sousa; Osvaldo Augusto Vasconcelos de Oliveira Lopes da Silva; Fabrício Higo Monturil de Morais; Marcos Antonio Tavares Lira; Albemerc Moura de Moraes; Dionatas Rayron da Silva Alves

doi:10.5327/Z2176-94781574

Authors

Daniel Leal Sousa Instituto Federal de Educação, Ciência e Tecnologia do Piauí (IFPI) - Brazil https://orcid.org/0000-0003-3393-5753
Osvaldo Augusto Vasconcelos de Oliveira Lopes da Silva Instituto Federal de Educação, Ciência e Tecnologia do Piauí (IFPI) - Brazil https://orcid.org/0000-0003-1778-5855
Fabrício Higo Monturil de Morais Instituto Federal de Educação, Ciência e Tecnologia do Piauí (IFPI) - Brazil https://orcid.org/0000-0002-0366-9389
Marcos Antonio Tavares Lira Universidade Federal do Piauí (UFPI) - Brazil https://orcid.org/0000-0002-1691-1488
Albemerc Moura de Moraes Universidade Federal do Piauí (UFPI) - Brazil https://orcid.org/0000-0002-4427-7365
Dionatas Rayron da Silva Alves Universidade Federal do Piauí (UFPI) - Brazil https://orcid.org/0000-0002-7090-1803

DOI:

https://doi.org/10.5327/Z2176-94781574

Keywords:

renewable energy; Law 14,300; energy management.

Abstract

The number of distributed generation systems has grown exponentially in Brazil since its first regulation. However, with the approval of a new legal framework, consumers began to pay for using the electricity distribution system, resulting in a direct impact on the electricity market. Thus, the objective of this work is to evaluate the influence of such a new regulation on the economic feasibility of distributed generation systems for residential facilities, which are the most representative consumers. For this purpose, the approved energy tariffs for the utilities are analyzed in detail, as well as the impact on the cash flow of systems installed in the vacancy period of the law. Five distinct scenarios are assessed, considering econometric parameters and a thorough comparison with traditional fixed-income investments available in Brazil. The study shows that there is no common pattern for the adoption of electricity tariffs, while the new regulation varies according to the tariff type in the regions most impacted in the country. Even with the decrease in attractiveness, one can state that the systems are still viable in all the analyzed scenarios, even without a smooth transition between the regulations. Finally, it is strongly recommended that new systems are installed as soon as possible associated with proper energy management in consumer units, while prioritizing energy consumption during peak generation periods.

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