Techno-Economic Analysis of Hybrid Energy Storage Optimal Sizing in Self-Sufficient Renewable Energy System

Energy storage is crucial in the current renewable energy-dominated power system for several reasons. One critical need is effectively mitigating the uncertainty of sporadic renewable source generation and enhancing energy integration in energy systems. This paper analyzes an optimal sizing design of the hybrid energy storage connected with standalone rooftop solar photovoltaic considering precise battery and stored hydrogen usage. This study conducts a techno-economic analysis of an office building located in a temperate region. A powerful optimization tool is employed to optimize the configuration and sizing of the proposed distributed renewable energy system. The model optimization results affirm that the hybrid storage model design simultaneously leveraging battery and hydrogen fuel cell performs better than only hydrogen storage design when evaluating the levelized cost of energy, total net present cost, self-sufficiency, and reliability objective functions.