A recent study has introduced an innovative approach to enhancing railway level crossings in Bangladesh by integrating hybrid renewable energy systems. Led by Zia Ul Islam from the Department of Electrical and Electronic Engineering at Green University of Bangladesh, the research proposes a sustainable solution that combines vertical-axis wind turbines and photovoltaic systems to power automated railway crossings. Published in the journal “Energy Conversion and Management: X,” this study addresses the urgent need for modernization within the country’s railway infrastructure.
The proposed hybrid system demonstrates significant economic and environmental benefits. With net present costs calculated at approximately USD 8,500 for various locations, the project shows promise for cost-effective implementation. The study reveals that the photovoltaic-wind turbine-grid-connected model yields a competitive Cost of Energy at around 0.03 USD per kilowatt-hour, making it a viable option for energy generation in the region.
Zia Ul Islam notes the positive impact of this hybrid system, stating, “Our analysis shows that integrating renewable energy into railway level crossings not only reduces costs but also cuts greenhouse gas emissions by up to 44.23% compared to traditional grid-only systems.” This reduction in emissions positions the project as a crucial step towards sustainable development in Bangladesh’s transportation sector.
In terms of financial viability, the study reports an Internal Rate of Return (IRR) ranging from 4.6% to 33.7% across the five selected locations, indicating a favorable investment opportunity. The projected payback period for the systems varies between approximately 4.57 to 13.29 years, which is appealing for stakeholders looking to invest in green technologies.
Moreover, the research includes a sensitivity analysis that highlights the robustness of the proposed systems under varying wind speeds and solar irradiation, ensuring reliability in energy production. This adaptability is critical in a country like Bangladesh, where climate conditions can fluctuate significantly.
The findings of this study not only pave the way for modernizing railway infrastructure but also open doors for commercial opportunities within the energy sector. By leveraging renewable energy sources, investors and policymakers can contribute to a more sustainable and efficient transport system, ultimately benefiting both the environment and the economy.
For more information about the research team, visit Green University of Bangladesh.
