Techno-economic Aspects of Energy Storage System for Residential Microgrid Applications with Green Hydrogen
摘要
The ability of the ESS to act as the source of energy during no-renewable energy source (RES) hours makes it the best candidate to avoid grid instability. Rechargeable battery energy storage system (BESS) gradually replaced the conventional diesel generators and IC engine in the past decade for microgrid operations and transportation applications, respectively. However, the high initial investment cost, replacement cost, and degradation cost of individual BESS refrains the residential community to opt for these technology even in 2023. Further, the current grid-scale green hydrogen (GH2) storage technology is expensive when compared to other state-of-the-art storage options, such as pumped hydro storage and compressed air. To this end, a small effort has been put in this article to study the techno-economic aspects of residential microgrid with rooftop solar PV, BESS, and GH2. A rooftop solar PV-based residential microgrid with four different configurations is studied, and the technical and economic assessment factors are evaluated. The findings of this study suggest that the proposed combination of PV-BESS-GH2 has a levelized cost of electricity (LCOE) of 42.26 ₹/kWh, distributed energy resources (DER) fraction (DF) of around 40%, and the least payback period of 4.05 years even though the initial capital investment is highest. Further, this study navigates through the impact of various parameters on LCOE. The study demonstrates the scope of hybrid ESS at residential microgrid level toward reliable and resilient grid.