能源效率與排放效率的量化分析：以亞太經濟合作會議經濟體為例

A Quantitative Analysis of Energy and Emission Efficiencies: a Case Study of APEC Economies

氣候變遷與全球暖化為各國所關心的重要議題，而提升能源效率被視為對抗全球暖化最具成本效益的方式之一。提升能源效率不但可以有效減緩二氧化碳排放，更可增進國家的能源安全與環境永續。本文應用資料包絡分析法（data envelopment analysis）建立兩個指標，以監測並比較亞太經濟合作會議（Asia-Pacific Economic Cooperation, APEC）各經濟體的能源使用效率與二氧化碳排放效率。除藉此比較台灣相對於其他國家的績效表現外，亦希望藉由分析影響能源效率與排放效率的因素，找出台灣對國際社會的貢獻利基。

This paper employs a total-factor framework to analyze the environmental efficiency of APEC economies during the period of 1992-2011. With growing concern about global warming and sustainable development, the incorporation of undesirable outputs is very important when evaluating an economy's environmental performance. This paper utilizes a CRS-SBM model with undesirable outputs to calculate the targets of inputs and undesirable outputs. Two indices, namely ecological total-factor energy efficiency (ETFEE) and ecological total-factor C02 emission efficiency (ETFCEE), are proposed as ways to monitor and compare both energy and emission efficiencies over time for APEC economies. Findings show that there is a highly positive relation between ETFEE and ETFCEE, so the results of ETFEE and ETFCEE are very similar. Using this analysis, we find that Hong Kong is the best performer while Russia performs the worst on average during the research period.