Treffer: Design and Optimization of a Sustainable Off‐Grid Renewable Rich Islanded Microgrid for Coastal Regions in Bangladesh.

Reliable electricity access is crucial for sustainable development, yet Bangladesh's coastal regions face challenges due to an unreliable grid. The off‐grid hybrid system based on renewable energy is recommended in the existing research for Bhasan Char, optimized through the application of HOMER Pro software with the components being solar PV (48.3 kW), wind turbine (40 kW), diesel generator (50 kW), battery storage (91 strings), and a system converter (34.7 kW). Five different system configurations were analyzed, and Case 1 was the most cost‐effective with a net present cost (NPC) of 25.87 million Bangladeshi taka (BDT), cost of energy (COE) of 16.29 BDT/kWh, and operating cost of 958,523 BDT/year. The system also offers a high renewable fraction (93.9%), low emissions (7651 kg CO2/year), and payback period of 2.74 years. In addition, sensitivity analysis and heatmap correlation using Python were also utilized to compare system performance under various situations. Results show a low‐cost and clean model that uses low fossil fuel but is highly economically feasible. The study submits an expandable model for off‐grid coastal areas' sustainable electrification that is consistent with Bangladesh's energy security and conservation policies. [ABSTRACT FROM AUTHOR]

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