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| Srl | Item |
| 1 |
ID:
171418
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| Summary/Abstract |
Electricity plays a key role in modern energy service and climate mitigation. Electricity is becoming more accessible and it is substituted for fossil fuel in more scenarios. Generating electricity from clean energy instead of traditional coal and improving the efficiency of electricity generation, transmission, distribution, and utilization are making it possible for a carbon emission growth reduction. Here we explored the question of whether more use of electricity will lead to less carbon emission growth. Firstly, based on the panel data of 114 countries from 2000 to 2014, we applied a STIRPAT model and then analyzed the relationship between carbon emission and electricity use level with fixed effects panel model and adopted a panel threshold regression model considering electricity-generating source heterogeneity. The results show that electricity use level has a significant negative effect on carbon emission especially when clean energy-based electricity takes a bigger portion. Population, economic growth, urbanization, and industrialization have significant positive impacts on carbon emission. We came up with policy implications based on the results in the end.
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| 2 |
ID:
122741
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| Publication |
2013.
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| Summary/Abstract |
A great challenge China's power sector faces is to mitigate its carbon emissions whilst satisfying the ever-increasing power demand. Optimal planning of the power sector with consideration of carbon mitigation for a long-term future remains a complex task, involving many technical alternatives and an infinite number of possible plants installations, retrofitting, and decommissioning over the planning horizon. Previously the authors built a multi-period optimization model for the planning of China's power sector during 2010-2050. Based on that model, this paper executed calculations on the optimal pathways of China's power sector with two typical decision-making modes, which are based on "full-information" and "limited-information" hypothesis, and analyzed the impacts on the optimal planning results by two typical types of carbon tax policies including a "continuous and stable" one and a "loose first and tight later" one. The results showed that making carbon tax policy for long-term future, and improving the continuity and stability in policy execution can effectively help reduce the accumulated total carbon emissions, and also the cost for carbon mitigation of the power sector. The conclusion of this study is of great significance for the policy makers to make carbon mitigation policies in China and other countries as well.
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| 3 |
ID:
115112
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2012.
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| Summary/Abstract |
Shortages of water and geographically uneven distribution of coal and water pose great challenges to sustainable development of the coal industry in China. In this paper, we illustrate the major challenges existing in the coal industry from a supply chain viewpoint, and propose technical and policy suggestions to address them. First, we provide quantitative information about water withdrawal, consumption, waste water recycling and treatment and pollution from coal mining, preparation, to final conversion for China's power generation and coal-to-chemical industry. We then analyze scenarios of water use in China's coal industry between 2020 and 2030. Our results show that water issues are becoming increasingly severe constraints for coal development in China, especially in North and West China, where water is more scarce and ecological systems are more vulnerable than other regions. Without implementing effective water-saving measures or regulations the water demand in the coal industry could dramatically increase and probably exceed China's water supply capacity in the near-term future, bringing substantial uncertainty to sustainable development of China's energy economy. We also illustrate that coal-fired power generation, with appropriate technical improvement and proper policy supports, has the greatest potential for water savings in the coal industry. Our conclusions also underscore the importance of expanding energy efficiency and renewable energy in China so as to limit the country's dependence on coal.
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