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ID: 150447

Multi-regional structural path analysis of the energy supply chain in China's construction industry / Hong, Jingke; Shen, Qiping ; Xue, Fan

Hong, Jingke	Journal Article
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The construction industry in China exerts significant environmental impacts and uses considerable resources because of rapid urbanization. This study conducted a structural path analysis (SPA) based on the multi-regional input–output table to quantify environmental impact transmission in the entire supply chain. Results indicated that the direct resource input (the first stage) along with on-site construction (the zeroth stage) consumed the highest amount of energy in the supply chain and accounted for approximately 50% of total energy consumption. Regional analysis showed that energy consumption in the construction industry at the provincial level was self-sufficient. Sectoral analysis demonstrated that the direct inputs from the sectors of “manufacture of non-metallic mineral products” and “smelting and pressing of metals” generated the most important energy flows, whereas the sectors of “production and distribution of electric power and heat power” and “extraction of petroleum and natural gas” significantly but indirectly influenced energy use. Sensitivity analysis exhibited that the system boundary of SPA could be narrowed down into the first two upstream stages that contained nearly 50% of energy flow information or expanded toward the first five upstream stages that represented 80% of total energy consumption.

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Energy Consumption ; Construction Industry ; Multi-Regional Input–Output Model ; Structural Path Analysis

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ID: 166327

Review and assessment of energy policy developments in Chile / Simsek, Yeliz

Simsek, Yeliz	Journal Article
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In recent years, the Chilean energy sector has gone through a significant transformation. Chile ratified the Paris Agreement in 2017 and committed to develop policies to face climate change and to transition to a more sustainable energy system. Promoting renewable energy and energy efficiency became an essential strategy for Chile to reduce emissions and reach its energy and environmental goals, which are addressed in various governmental studies. Further, Chile became successful in promoting renewable electricity production without feed-in tariffs. The current national goal is for at least 70% of the electricity in Chile to be generated from renewable energy sources by 2050. Additionally, energy efficiency is to be implemented in several sectors. This paper provides a broad overview of the energy sector and review of the Chilean energy policy development and environmental targets with emphasis on recent years. Finally, it also proposes an assessment about existing and required energy policy instruments for Chilean energy sectors by considering the promotion of renewable energy and energy efficiency and analyses the associated potential challenges. This work can provide insights to decision makers to develop long-term sustainable energy plans for Chile to reach its energy and environmental goals.

Key Words

Coal Production ; Structural Path Analysis ; Virtual WaterInput-output Analysis ; Betweenness

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