Abstract
From 1990–2009, electricity has played a critical role in supporting industrial development and economic growth in Taiwan. In this study, a 42-sector input-output table provided the basis for examination of linkage effects among various sectors and electric industry concerning their CO2 emissions. These forward and backward linkage effects were inferred from analysis of the sensibility index of dispersion and the power index of dispersion. From results we suggest that, according to the CO2 multipliers and linkage effects, artificial fiber, coal products, cement, and land transportation are the top four CO2-intensive sectors related to electricity sector in Taiwan. It is worth noting that many sectors in Taiwan have larger indirect CO2 emissions than direct CO2 emissions. This finding provides a focal point for researchers and related governmental agencies to explore mitigations for CO2 reduction and to enhance effective environmental practices. Decision-makers from other countries with similar power plants may apply the similar approach and methodology to prioritize their strategies for abatement of CO2 emissions from the electricity sector.
Highlights
Simultaneous with the economic growth in Taiwan, electricity demand is rapidly increased to satisfy these needs
From results we suggest that, according to the CO2 multipliers and linkage effects, artificial fiber, coal products, cement, and land transportation are the top four CO2-intensive sectors related to electricity sector in Taiwan
The results show that the CO2 emissions increase continuously from 2004 to 2006, the monetary CO2 emissions factor decreases from 720.22 ton CO2/million USD in 2004 to 705.50 ton CO2/million USD in 2006
Summary
Simultaneous with the economic growth in Taiwan, electricity demand is rapidly increased to satisfy these needs. Chen and Wu (1994) applied input-output analysis to analyze the sources of change in the electricity demands of the industrial sectors in Taiwan Their results showed that economic growth had the dominant impact on electricity use. Artificial fibers Basic chemical materials Plastics (synthetic resins) Petrochemical raw materials Fabrics & wearing apparel Paper and products Plastic products Other non-metallic mineral products Cement Iron & steel “petroleum refining products” sector must increase their outputs to meet the raising demand from electricity generation, and the development of these upstream sectors would be promoted (by definition of backward linkage). Because the electricity sector is one of the fundamental industries in Taiwan, it uses a lot of fossil fuel inputs in support of electricity generation For this reason, the CO2 multiplier is slightly larger than the monetary CO2 emissions factor of the electricity sector. The intensity of direct CO2 emissions from electricity generation is higher than that of indirect CO2 emissions from related sectors in the input-output table
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