Reducing CO2 emissions of Japanese thermal power companies: a directional output distance function approach
Reducing CO2 emissions of Japanese thermal power companies: a directional output distance function approach
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DOI：
10.1007/s10018-013-0067-5
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发表时间：
2014
影响因子：
1.7
通讯作者：
K. Matsushita;Kota Asano
中科院分区：
文献类型：
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作者：
K. Matsushita;Kota Asano
本文使用1990-2011年的面板数据，通过方向性输出距离函数（DODF），对日本10家电力公司的火力发电效率和二氧化碳（CO2）的影子价格进行了分析。我们发现，二氧化碳的影子价格变化很大，在1.49美元和288.82美元之间，这取决于公司的生产战略，能源供应和二氧化碳排放量。这些影子价格为我们了解电力公司如何应对环境法规，如环境税和排污权交易制度提供了线索。根据DODF的数据，如果这些公司能够有效地运营，而不考虑减少二氧化碳排放，2011年本可以以增加4010.5万吨二氧化碳为代价，额外产生53571吉瓦时的电力。这些增长分别相当于2011年10家电力公司总发电量和二氧化碳排放量的8.77%和9.18%。另一方面，如果这些公司能够有效地运营，并将减少二氧化碳排放量放在第一位，那么总体上还可以减少5800.2万吨二氧化碳，相当于2011年二氧化碳排放总量的13.28%。
This article examines the thermal power generation efficiency of ten Japanese electric power companies and the shadow prices of carbon dioxide (CO2) by employing a directional output distance function (DODF) with panel data for 1990–2011. We find that the shadow price of CO2varies greatly between US$1.49 and US$288.82, depending on the company’s production strategy concerning energy supply and CO2emissions. These shadow prices give us clues to understand how the electric power companies may respond to environmental regulations, such as environmental tax and emission trading systems. According to the DODF, an additional 53571 GWh of electricity could have been generated in 2011 at the cost of an increase of 40105 thousand tonnes of CO2, if the companies would have operated efficiently giving little consideration to CO2emissions reduction. These increases are equivalent to 8.77 and 9.18 % of total electricity and CO2emissions, respectively, from the ten electric power companies in 2011. On the other hand, if the companies would have operated efficiently and given first priority to CO2emissions reduction, a further 58002 thousand tonnes of CO2, equivalent to 13.28 % of their total CO2emissions in 2011, could have been reduced as a whole.