Abstract
Renewable energy utilization for electricity supply has increased significantly. Technology maturity, cost reduction, and environmental friendliness are significant factors that encourage this increase. The expansion of distributed generation is increasing significantly due to the concern of many householders and entrepreneurs in minimizing the energy costs at residential and commercial properties due to the high significance of the energy costs at total expenses of most families and business. This study focuses on exploring optimization process of energy costs of a grid-connected hybrid PhotoVoltaic (PV)/Battery/Grid. The profile of a big commercial load located in Brazilian Amazon area is used as an optimization example. The system performance and optimization results are verified by using Hybrid Optimization of Multiple Energy Resources (HOMER).