Title: Solar potential for the solar photovoltaic roof integration system in China explored by the geographic information system

Authors: Xinping Zhou, Jiakuan Yang, Xudong Yuan, Bo Xiao, Guoxiang Hou

Addresses: School of Civil Engineering and Mechanics, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan, Hubei 430074, PR China. ' School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China. ' School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China. ' School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China. ' School of Traffic Science and Engineering, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China

Abstract: This paper estimates the potential solar power for the solar photovoltaic Roof Integration System (RIS) using the Geographic Information System (GIS) method, taking into account the geographic distribution of solar irradiation and the estimate of costs for the RIS and identifies the distribution of potential solar energy radiating on the RIS and power. The total urban roof area is estimated to be 2957 million square metres by assuming five-story buildings. Based on the conversion efficiency of the RIS from solar energy to electric power that reached about 14%, the total potential power of this system in the urban regions of China can attain about 1.9 × 1018 J, thus lessening the cumulative emission at approximately 5.3 × 108 tons of carbon dioxide (CO2). Also, the results show that the west is the most suitable region for the RIS, where the highest electricity cost can be reached owing to the most intense irradiation. However, this large need of power will counteract the high cost induced by low irradiation to promote the application of the RIS in eastern China, where the cost of electricity is the highest.

Keywords: geographic information systems; GIS; roof integration systems; RIS; solar energy; potential power; solar power; energy potential; photovoltaic roof systems; China.

DOI: 10.1504/IJGEI.2009.021542

International Journal of Global Energy Issues, 2009 Vol.31 No.1, pp.50 - 60

Available online: 30 Nov 2008 *

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