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Holistic assessment of co-located solar photovoltaics and greenery in the tropics: Results on solar photovoltaic output, greenery growth, and roof surface temperature

Author

Listed:
  • Rahmaniah, Faizatuzzahrah
  • Lim, Joyce Hui Min
  • Poh, Choon Hock
  • He, Lian Sheng
  • Yeo, Jeb
  • Wang, James Wei
  • Valliappan, Selvam
  • Ang, Edward
  • Chen, Zhimin
  • Tay, Stephen En Rong

Abstract

Co-located solar photovoltaics and green roof systems have gained increased attention for generating renewable energy and incorporating greenery in urban environments. However, few studies approach the topic from a holistic approach of such a system in tropical climates. In this study, the impact of co-located solar photovoltaics and greenery in a tropical climate was investigated across three functional benefits: 1) solar photovoltaic output, 2) greenery growth, and 3) roof and ceiling surface temperature. Results revealed 1) an increase in photovoltaic performance ratio with greenery [absolute increase of 1.0 ± 0.8 %], 2) shade-tolerant plant species located under photovoltaic modules exhibited a significantly higher horizontal ground coverage with good health and vigour [absolute increase of 19.8 ± 8.0 %], and 3) lower roof surface temperature under co-located solar photovoltaics and greenery [reduction of 4.7 ± 0.1 °C]. To quantify the multi-functional impact of the co-located system, the Roof Equivalent Ratio is proposed, which was adapted from the Land Equivalent Ratio used in agrivoltaics, to which a roof equivalent ratio of 2.39 was obtained for the study. The results of this study could inspire similar research, especially in the tropics, to incorporate renewable energy generation through solar photovoltaic and greenery for sustainable urban environments.

Suggested Citation

  • Rahmaniah, Faizatuzzahrah & Lim, Joyce Hui Min & Poh, Choon Hock & He, Lian Sheng & Yeo, Jeb & Wang, James Wei & Valliappan, Selvam & Ang, Edward & Chen, Zhimin & Tay, Stephen En Rong, 2025. "Holistic assessment of co-located solar photovoltaics and greenery in the tropics: Results on solar photovoltaic output, greenery growth, and roof surface temperature," Applied Energy, Elsevier, vol. 395(C).
    • Handle: RePEc:eee:appene:v:395:y:2025:i:c:s0306261925008633
    DOI: 10.1016/j.apenergy.2025.126133
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    1. Dupraz, C. & Marrou, H. & Talbot, G. & Dufour, L. & Nogier, A. & Ferard, Y., 2011. "Combining solar photovoltaic panels and food crops for optimising land use: Towards new agrivoltaic schemes," Renewable Energy, Elsevier, vol. 36(10), pages 2725-2732.
    2. Valle, B. & Simonneau, T. & Sourd, F. & Pechier, P. & Hamard, P. & Frisson, T. & Ryckewaert, M. & Christophe, A., 2017. "Increasing the total productivity of a land by combining mobile photovoltaic panels and food crops," Applied Energy, Elsevier, vol. 206(C), pages 1495-1507.
    3. Jaiyoung Cho & Sung Min Park & A Reum Park & On Chan Lee & Geemoon Nam & In-Ho Ra, 2020. "Application of Photovoltaic Systems for Agriculture: A Study on the Relationship between Power Generation and Farming for the Improvement of Photovoltaic Applications in Agriculture," Energies, MDPI, vol. 13(18), pages 1-18, September.
    4. Quansah, David A. & Adaramola, Muyiwa S., 2019. "Assessment of early degradation and performance loss in five co-located solar photovoltaic module technologies installed in Ghana using performance ratio time-series regression," Renewable Energy, Elsevier, vol. 131(C), pages 900-910.
    5. Cavadini, Giovan Battista & Cook, Lauren M., 2021. "Green and cool roof choices integrated into rooftop solar energy modelling," Applied Energy, Elsevier, vol. 296(C).
    6. McMaugh, Teresa, 2005. "Guidelines for surveillance for plant pests in Asia and the Pacific," Monographs, Australian Centre for International Agricultural Research, number 114089.
    7. Jaffal, Issa & Ouldboukhitine, Salah-Eddine & Belarbi, Rafik, 2012. "A comprehensive study of the impact of green roofs on building energy performance," Renewable Energy, Elsevier, vol. 43(C), pages 157-164.
    8. Trommsdorff, Max & Kang, Jinsuk & Reise, Christian & Schindele, Stephan & Bopp, Georg & Ehmann, Andrea & Weselek, Axel & Högy, Petra & Obergfell, Tabea, 2021. "Combining food and energy production: Design of an agrivoltaic system applied in arable and vegetable farming in Germany," Renewable and Sustainable Energy Reviews, Elsevier, vol. 140(C).
    9. Shahsavari, Amir & Akbari, Morteza, 2018. "Potential of solar energy in developing countries for reducing energy-related emissions," Renewable and Sustainable Energy Reviews, Elsevier, vol. 90(C), pages 275-291.
    10. Roza Vakilinezhad & Navid Ziaee, 2024. "Assessing the combined effect of PV panels’ shading and cool materials on building energy loads in different climates," Environment, Development and Sustainability: A Multidisciplinary Approach to the Theory and Practice of Sustainable Development, Springer, vol. 26(6), pages 16201-16221, June.
    11. Wittkopf, Stephen & Valliappan, Selvam & Liu, Lingyun & Ang, Kian Seng & Cheng, Seng Chye Jonathan, 2012. "Analytical performance monitoring of a 142.5kWp grid-connected rooftop BIPV system in Singapore," Renewable Energy, Elsevier, vol. 47(C), pages 9-20.
    12. Jerome Wei Chiang Teng & Chew Beng Soh & Shiddalingeshwar Channabasappa Devihosur & Ryan Hong Soon Tay & Steve Kardinal Jusuf, 2022. "Effects of Agrivoltaic Systems on the Surrounding Rooftop Microclimate," Sustainability, MDPI, vol. 14(12), pages 1-13, June.
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