Service Sector Energy Efficiency Assessment -The Application of Three Stage DEA Model

• Main Authors: Sun, Tingrui, 孫廷瑞
• Other Authors: Chang, Ssuli
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/53104688379184744324

碩士 === 國立臺北大學 === 自然資源與環境管理研究所 === 100 === Under the pressure of energy scarcity and global warming, how to raise energy use efficiency has become an essential issue for national industry development. According to IPCC AR4 (2007), every sector has enormous niche in economic and GHG mitigation potential, and building sector ranked as number one among all sectors. However, with the focus of Taiwan’s industry development has been transferring from manufacturing to service sector and the energy use of service sector has been increasing annually, it implies that service sector has high energy saving potential. Hence, examining the energy use efficiency of service firms will contribute to providing the energy efficiency improvement direction and range for service firms, and then achieving the goal of enhancing energy efficiency of overall service sector. This research uses data of "Energy Audit for Non-Productive Industries" collected by Taiwan Green Productivity Foundation from a project authorized by R.O.C. Bureau of Energy. In addition, considering that the industrial characteristics and the building’s physical factors of service firms may influence their energy use, this research attempts to adopt the Three Stage Data Envelopment Analysis Model (Three-Stage DEA Model) proposed by Fried et al. (2002) which takes environmental effect and statistical noise into account to measure the energy use efficiency of service firms and provide advice to the authorities. Results show that the environmental effect "floor area", "building use" and statistical noise significantly affect the energy efficiency of service firms. Among the 11 categories in service sector discussed in this research, the average energy use efficiency of "Transportation and Storage", "Education" and "Human Health and Social Work Service" is inferior within the same category, and their energy use are higher compared with other categories in service sector. Thus, this study suggests the authorities should reinforce the guidance of the above-mentioned firms for energy conservation. Besides, the energy efficiency of "Wholesale and Retail Trade", "Information and Communication", "Real Estate", "Professional, Scientific and Technical Service" and "Public Administration and Defense" are kind of convergent, so this study suggests that authorities expand the energy audit objects to small and medium energy users, and improve the objectivity and reasonableness of the measurement for energy efficiency. Moreover, although the share of energy use of "Accommodation and Food Service", "Finance and Insurance", and "Art, Entertainment and Recreation" is lower than others, the energy efficiency of among firms within the same category is very different. Therefore, this study suggests that the authorities can follow their energy efficiency performance continually to achieve the purpose of improving energy efficiency of service sector.