| Summary: | 碩士 === 國立成功大學 === 土木工程學系碩博士班 === 100 === Sustainable development is one considerable issue in many industrial sectors. Eco-efficiency is a tool that can help companies to measure sustainability. This study derived eco-efficiency indicators to measure eco-efficiency for construction companies. Economic and environmental performance disclosures (the two components of eco-efficiency) from the CSR reports of eight construction companies were adopted to develop eco-efficiency indicators.
20 possible eco-efficiency indicators were derived for construction companies, but the number of indicators needs to be reduced to see more prominent ones. This selection is made clearer by comparing the indicators between manufacturing and construction companies. The prominent eco-efficiency indicators for construction companies are revenue, cost of sales, and environmental investments as economic performance, and energy consumption, CO2 emissions, and waste disposal as environmental impact.
The developed indicators were analyzed to evaluate the eco-efficiency for contractors, developers, and material suppliers. Comparing the eco-efficiency values of the three types of companies, the contractor has the largest value in revenue/CO2 emissions with US$522,111 per ton CO2 eq; the developer and material supplier have the largest values in revenue/waste disposal with US$89,353 and US$43,681 per waste disposal.
Eco-efficiency indicators provide another aspect to look at sustainability. Construction companies can benefit from pursuing environmental performance without losing track of cost expenditures.
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