| 英文摘要 |
Product carbon disclosure has become an important and inevitable measure for businesses to declare their social responsibilities while in keeping pace with the international trends of carbon reduction.
To echo the domestic demand, the Executive Yuan EPA carbon footprint calculation service platforms already in operation, and continue to expand the carbon footprint emission factors for computing services, but the current expansion rate is still unable to meet the user's expectations. To this end, this project through cooperation with domestic industrial circles or academia to introduce carbon footprint coefficient; but also raised several new way to increment coefficient quantity.
The growing trend of life cycle assessment issues is expansion from single environmental thinking (such as carbon footprint), other environmental impact (such as EU Product Environmental Footprint, PEF), economic costs (Life cycle cost, LCC) or social issues (Social life cycle assessment, SLCA) may going to be include in. This project will continue to focus its development, and to make policy recommendations, proposed some suggestion as short-term and mid-term task-integrated policy through precious opinion and advice between experts.
The significant results are summarized as follows:
1.Data separate into 2 types of CFP emission database (quality database, reference database) are recommended. This logic decision method not only reduces the risk of incorrect declaration, but accumulating more CFP quickly. When emission factor is used to make an application for an EPA carbon footprint label, high quality factor have priority to be used. We recommend that the proportion of contribution from reference database in carbon footprint calculating shall less than 30% (Refer to the EU's environmental footprint guide data quality requirements. At least top 70% of the product environmental impact shall be calculated by good quality data).Contribution from any one source of GHG emissions of more than 3% of the anticipated total GHG emissions associated with the product should being calculated by using good or basic data quality emission factors
2.We cited original data of carbon footprint emission factors from low carbon building alliance, check the correctness and completeness. Then through expert advice, arrange data update order and successfully upgraded 5 sets of carbon footprint emission factors this year. CFP quantification results in good or basic data quality will be included in quality database, preliminary estimates data quality will be included in reference database.
3.We have searched and analyzed several foreign life cycle inventory or carbon footprint database. U.S. NREL Life Cycle Inventory (LCI) Database, Australia AUSLCI Database, and some ELCD data have inventory, so the data of these database could be used for localization. Then from each database, trying data localization transforming, and assessing such conversion which may encounter problems including data interpretability, operating time, and data quality grade. Finally, a data localization mechanism (SOP) is proposed, and a list for prospects is made.
4.Developing an adapting mechanism (SOP) for the CFP quantification results, which are provided from domestic company. The available emission factors could be rapidly accumulated under maintenance of database quality. Certification is a key process. If it isn't carried out, the emission factor will be collected in reference database. In addition, the way to decide data was collected in reference database or not is by two factors, one is the mass balance in line with -10% to + 20% error, the other is comparing with similar emission factors, the error should be less than 50%.
5.We have studied papers of EU Product environmental footprint, life cycle cost (LCC) analysis methods applied to environmental aspects and social life cycle assessment (SLCA), exchanged opinions with experts, and made recommendations. LCC and SLCA are excluded from policy planning, but encourage manufacturers implement. Besides, we recommend that CFP-PCR should adopt EPD-PCR concept. Then the CFP-PCR would guide industry to gradually become familiar with product environmental footprint.
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