This paper presents a novel hybrid architecture integrating Battery Energy Storage Systems (BESS) and Solid Oxide Fuel Cells
(SOFC) for standalone renewable energy systems. The intermittent nature of renewable energy sources presents significant
challenges for reliable power supply in off-grid applications. While BESS provides excellent short-duration storage and rapid
response capabilities, it faces limitations for extended energy provision. Conversely, SOFCs offer efficient long-duration power
generation but have limited dynamic response characteristics. The proposed hybrid architecture leverages the complementary
strengths of these technologies to enhance system reliability, efficiency, and cost-effectiveness. Through comprehensive technical
and economic analyses, this research demonstrates that the hybrid BESS-SOFC system achieves a Levelized Cost of Energy
(LCOE) of about 0.38/kWh, comparing favorably to conventional alternatives. The architecture employs a hierarchical
control strategy with distinct operational modes to optimize component utilization and system performance. A case study
application in a remote location validates the practical implementation potential, achieving 78% renewable penetration while
maintaining continuous power supply. The findings indicate that such hybrid architectures represent a promising approach for
enhancing the viability of standalone renewable energy systems, particularly in applications requiring high reliability and
operational flexibility.