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Life cycle assessment and evaluation of energy payback time on high-concentration photovoltaic power generation system

Author

Listed:
  • Nishimura, A.
  • Hayashi, Y.
  • Tanaka, K.
  • Hirota, M.
  • Kato, S.
  • Ito, M.
  • Araki, K.
  • Hu, E.J.

Abstract

In this study, the environmental load of photovoltaic power generation system (PV) during its life cycle and energy payback time (EPT) are evaluated by LCA scheme. Two hypothetical case studies in Toyohashi, Japan and Gobi dessert in China have been carried out to investigate the influence of installation location and PV type on environmental load and EPT. The environmental load and EPT of a high-concentration photovoltaic power generation system (hcpV) and a multi-crystalline silicon photovoltaic power generation system (mc-Si PV) are studied. The study shows for a PV of 100Â MW size, the total impacts of the hcpV installed in Toyohashi is larger than that of the hcpV installed in Gobi desert by 5% without consideration of recycling stage. The EPT of the hcpV assumed to be installed in Gobi desert is shorter than EPT of the hcpV assumed to be installed in Toyohashi by 0.64Â year. From these results, the superiority to install PV in Gobi desert is certificated. Comparing with hcpV and mc-Si PV, the ratio of the total impacts of mc-Si PV to that of hcpV is 0.34 without consideration of recycling stage. The EPT of hcpV is longer than EPT of mc-Si PV by 0.27Â year. The amount of global solar radiation contributing to the amount of power generation of mc-Si PV is larger than the amount of direct solar radiation contributing to the amount of power generation of hcpV by about 188Â kWÂ h/(m2Â year) in Gobi desert. Consequently, it appears that using mc-Si PV in Gobi desert is the best option.

Suggested Citation

  • Nishimura, A. & Hayashi, Y. & Tanaka, K. & Hirota, M. & Kato, S. & Ito, M. & Araki, K. & Hu, E.J., 2010. "Life cycle assessment and evaluation of energy payback time on high-concentration photovoltaic power generation system," Applied Energy, Elsevier, vol. 87(9), pages 2797-2807, September.
    • Handle: RePEc:eee:appene:v:87:y:2010:i:9:p:2797-2807
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