This study comparatively analyzes the energy generation performance and economic evaluation of monofacial and bifacial photovoltaic (PV) modules, utilizing empirical data obtained from the Saemangeum project. The analysis is based on field data collected over a three-year period from 2022 to 2024. The results indicate that bifacial modules achieved an average power generation increase of approximately 8.27% compared to monofacial modules, attributed to the additional energy yield from rear-side irradiance. For the economic assessment, the Levelized Cost of Electricity (LCOE) and the Break-Even Point (BEP) were analyzed. Although the initial investment cost for bifacial modules was approximately 7.4% higher than that of monofacial modules, the LCOE was found to be lower for bifacial modules (114.7 KRW/kWh) compared to monofacial modules (117.8 KRW/kWh) over a 20-year operation period, due to the benefits of increased energy generation. The BEP analysis revealed that bifacial modules reach a break-even point relative to monofacial modules after 7.02 years. Furthermore, the study examined the trends of the BEP in response to variations in electricity selling prices and bifacial gain. In conclusion, this study confirms that bifacial PV modules demonstrate superior results in both power generation performance and economic analysis within the testbed environment. Consequently, these findings suggest a high potential for the application of bifacial modules in future domestic and international photovoltaic projects.