バングラデシュ各地域における各種太陽追尾構成下での持続可能なオフグリッドエネルギーの技術経済的実現可能性と発電性能分析

Unofficial AI-generated summary based on the public title and abstract. Not an official translation.

🔬研究者:途上国オフグリッド電化における追尾構成と経済性のトレードオフを定量化した実証例として参照可能。

🏢実務担当者:新興国での分散型太陽光プロジェクトの設計・投資回収評価に、固定傾斜優位という実務的示唆を提供。

🏛政策担当者:農村電化政策において、追尾型より固定式PV-ディーゼル-蓄電池構成が費用対効果で優れる可能性を示す。

The dependable electrification of off-grid communities in Bangladesh continues to be a significant challenge, with the techno-economic feasibility of decentralized solar photovoltaic (PV) systems heavily impacted by the selection of solar tracking configurations and notable regional variations in irradiance. This study assesses a photovoltaic-based off-grid hybrid energy system in five sample regions of Bangladesh, especially for presuming the community exhibits a diurnal peak pattern primarily driven by daytime activities, aiming to determine the configuration that provides the optimal combination of economic, technical, and environmental performance. Three solar tracking systems; Horizontal Continuous Adjustment (HCA), Vertical Continuous Adjustment (VCA), and Two-Axis Tracking (TA) are methodically evaluated in comparison to a Fixed Tilt (FT) baseline. The optimization systems were performed using the HOMER Pro with an emphasis on power generation performance analysis in the representative regions, with evaluation based on Net Present Cost (NPC), Cost of Energy (COE), Return on Investment (ROI), Internal Rate of Return (IRR), payback period, capacity deficit, unmet load, surplus energy, and renewable energy portion. The findings consistently indicate that the FT Case I (PV-Diesel-Battery) configuration is the most sustainable option across all five regions, achieving the lowest NPC ($ 456,000–480,000) and COE ($ 0.207–0.218/kWh), alongside robust investment metrics (ROI: 27–30%; IRR ≈ 30%; payback period: 3.0–3.5 years). The arrangement exhibits substantial operational reliability, with a capacity shortage (CS) of roughly 0.07%, an unmet load (UL) of about 0.01%, and a moderate excess energy (EE) ranging from 14 to 24%, signifying adequate system sizing. A continuous renewable proportion of 75–85% yields significant emission savings compared to traditional diesel-based systems. The results offer quantitative direction for the implementation of economical and dependable solar hybrid systems in off-grid areas of Bangladesh.

• openalex https://doi.org/10.1038/s41598-026-69814-7first seen 2026-10-01 04:45:39