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Assessment of Rooftop Potential for Solar Energy and Rainwater Harvesting in Islamabad: A Geospatial Approach towards Sustainable Urban Development

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  • Muhammad Muzmmil Saleem, Asmad Hussain,Hamza Hanif

    (Department of Meteorology, COMSATS University Islamabad (CUI), Islamabad 45550, Pakistan. Department of Earth Sciences, Quaid-e-Azam University Islamabad (QAU), Islamabad 15320, Pakistan)

Abstract

Introduction/Importance of Study:The growing water and energy crises, exacerbated by abnormal temperature fluctuations, shifting precipitation patterns, and rapid urban expansion, have disrupted sustainable processes in many urban areas. This study explores the untapped potential of urbanrooftops in contributing to sustainable urban development by assessing their viability for solar energy generation and rainwater harvesting. By focusing on this underutilized aspect of urban infrastructure, the study aims to address critical issues related to water and energy management in cities.Novelty Statement:This research employs advanced geospatial techniques to evaluate rooftop characteristics, assessing their potential for solar energy generation and rainwater harvesting. The integration of cutting-edge geospatial data and methodologies provides new insights into the sustainable use of urban rooftops.Material and Method:To estimate the total rooftop area, the study utilizes Open Buildings V3 Polygons data with a resolution of 50 cm, which is freely accessible. Current rooftop uses and characteristics are derived from remote sensing data and analyzed using Geographic Information System (GIS) methodologies. The potential for renewable electricity generation is evaluated using Global Solar Atlas data, while rainwater harvesting potential is calculated based on precipitation data from the Pakistan Meteorological Department.Results and Discussion:The analysis reveals that the rooftops in Islamabad have the capacity to harvest approximately 778.92 million gallons of rainwater annually and generate about 16,504.29 MWh of solar energy per year. These findings indicate that rooftops could significantlycontribute to meeting the capital city's water and energy needs. Notable potential for solar energy and rainwater harvesting is observed in the sectors of I8, I9, H9, H13, I14, the Blue Area, Rawat Industrial Area, and DHA. Based on these results and public feedback, recommendations for future energy policies, urban planning, and the sustainable use of rooftop spaces are proposed. Islamabad is well-positioned to lead the way towards a more sustainable future.Concluding Remarks:Implementing the proposed systems for solar energy generation and rainwater harvesting could reduce reliance on non-renewable energy sources and mitigate urban flooding risks. This approach offers a viable solution for enhancing sustainability in urban environments and improving resource management.

Suggested Citation

  • Muhammad Muzmmil Saleem, Asmad Hussain,Hamza Hanif, 2024. "Assessment of Rooftop Potential for Solar Energy and Rainwater Harvesting in Islamabad: A Geospatial Approach towards Sustainable Urban Development," International Journal of Innovations in Science & Technology, 50sea, vol. 6(6), pages 97-112, June.
    • Handle: RePEc:abq:ijist1:v:6:y:2024:i:6:p:97-112
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    References listed on IDEAS

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