This work assesses the economic feasibility of replacing conventional peak power plants, such as Diesel Generator Sets (DGS), by using distributed battery energy storage systems (BESS), to implement Energy Time Shift during peak hours for commercial consumers, whose energy prices vary as a function of energy time of use (ToU tariffs). The economic analysis is performed by calculating the break-even point (BEP) for four different battery technologies: (i) lead-acid (OPzS); (ii) nickel-cadmium (NiCd); (iii) lithium-ion (Li-NCA); and (iv) Redox Flow (FeCr), using the HOMER Energy software in the simulations. One case study is analyzed for a commercial consumer connected to the MV network (Campinas/Brazil). The results show that, considering the updated 2018 BESS costs, none of the types of battery analyzed is economically attractive as a replacement for DGS. However, it can be observed that a 31%, 38% and 26% reduction in the costs of OPzS, Li-NCA and FeCr batteries, respectively, makes the installation of BESS viable. It is estimated that, in a 5- to 6-year horizon, these technologies would become economically attractive as a result of the strong decrease of the expected costs for the years to come.

这项工作评估了通过使用分布式电池储能系统（BESS）替代高峰期发电厂（例如柴油发电机组（DGS））以在商业时段高峰时段实施能源时移的经济可行性，商业用户的能源价格随能源使用时间的函数（ToU费率）。通过计算四种不同电池技术的收支平衡点（BEP）来进行经济分析：（i）铅酸（OPzS）；（ii）镍镉（NiCd）；（iii）锂离子（Li-NCA）；（iv）在模拟中使用HOMER Energy软件的氧化还原流量（FeCr）。针对连接到MV网络（Campinas /巴西）的商业消费者，分析了一个案例研究。结果表明，考虑到更新后的2018年BESS成本，所分析的电池类型均不能在经济上吸引DGS的替代品。但是，可以看到，OPzS，Li-NCA和FeCr电池的成本分别降低了31％，38％和26％，这使BESS的安装成为可能。据估计，在未来5至6年的时间里，由于未来几年预期成本的大幅下降，这些技术将在经济上具有吸引力。