Análise de viabilidade técnica e econômica de um sistema de geração híbrido com armazenamento: estudo de caso de Casa Nova - Bahia

Abstract

Installation of hybrid systems with storage is a way to maximize the amount of energy generated through exploring the complementarity of different sources. Understanding hybrid power plant (HPP) operation is crucial for optimizing new systems and reconfiguring existing plants, to their enhance efficiency. Alongside technical aspects, economic feasibility is also a fundamental feature in the construction of these systems. In this way, the objective of this master’s thesis work was to analyze the technical and economic aspects for implementing a HPP to supply a municipality in the state of Bahia. Initially, a state-of-the-art review of trends in hybrid energy systems was done. As a case study, we simulated an off-grid HPP to consider the energy consumption of the county of Casa Nova in Bahia, Brazil, based on the R&D project CHESF Hybrid Plant. The methodology consisted of the selection of energy sources, choosing a reference location, acquisition of generation and operational data, modeling and simulating the system in different scenarios, and a financial analysis. HOMER Pro software was used to optimize the HPP, and the outputs were evaluated from the levelized cost of energy (LCOE), simple payback, and power load fulfillment. As a result, the scenario of 25% HPP consumption by this county was the most competitive, emphasizing that the use of different energy sources increased the system generation capacity. However, the addition of battery energy system storage resulted in a high LCOE when compared to individual sources, which demonstrated that the cost of battery integration is not yet nationally competitive. Moreover, the results highlighted the importance of research investments, energy governance, and regulation in promoting hybrid system adoption and incentivizing energy transition.