Viabilidade técnico-econômica de sistemas de armazenamento com baterias de segunda vida em sistemas distribuídos com geração fotovoltaica: estudo de caso na minirrede Oásis-UFMG

Abstract

Energy storage systems are fundamental elements for the energy transition, enabling the replacement of fossil fuels and the adoption of a renewable energy matrix. In this context, electrochemical batteries play an important role in the electrification of transport and in the expansion of energy generation with renewable sources and distributed energy resources. In recent years, there has been exponential growth in the sale of electric vehicles, while their use in stationary systems remains a challenge in terms of economic forecasting, a situation that can be mitigated by use of second-life batteries. A technical-economic feasibility analysis was developed for a case study, in which a storage system with second-life batteries operates in conjunction with a photovoltaic power plant for a consumer of an electricity distributor in Brazil. The study applies the discounted cash flow method and indicates the main critical factors and parameters to be considered in the eventual development of a business plan for this topic. Although feasibility was not achieved for the analyzed case, the main challenges and alternatives for the future dissemination of second-life battery storage systems are highlighted.