Modeling and Simulation of a Hybrid Renewable Mini-Grid System for Electrification of Jaliadwip Island, Teknaf

Abstract

Affordable and reliable energy is essential for economic development, yet many remote islands in Bangladesh remain without electricity due to high grid extension costs and geographical constraints. Jaliadwip, an off-grid island in Teknaf, faces such challenges despite its selection by the Bangladesh Economic Zones Authority (BEZA) for the NAF Tourism Park, which is expected to require approximately 16 MW of power. This study proposes a hybrid renewable energy–based mini-grid system to meet the projected demand using an optimal configuration determined through HOMER software. The proposed system integrates solar photovoltaic (PV), wind turbines, biogas, and diesel generators. Simulation results show that the optimized PV–Wind–Diesel–Biomass hybrid system achieves the lowest Levelized Cost of Energy (LCOE) of 7.91 Tk/kWh with zero emissions, outperforming other standalone and hybrid options. Furthermore, the inclusion of net-metering PV and feed-in tariff (FIT) mechanisms further reduces the LCOE to 4.25 Tk/kWh and 3.33 Tk/kWh, respectively. The proposed approach provides a cost-effective and environmentally sustainable solution for electrifying Jaliadwip and offers a replicable model for similar island regions in Bangladesh.