Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1088/1748-9326/aabe9d |
Assessing the evolution of power sector carbon intensity in the United States | |
Schivley, Greg1; Azevedo, Ines2; Samaras, Constantine1 | |
2018-06-01 | |
发表期刊 | ENVIRONMENTAL RESEARCH LETTERS |
ISSN | 1748-9326 |
出版年 | 2018 |
卷号 | 13期号:6 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | In the United States, the electricity sector is a major focus for implementing policies to meet national, state, or local mandatory or voluntary CO2 emissions reductions goals. Thus, it is important to have timely and available information on greenhouse gas emissions generated by the power sector to ensure that the policies implemented achieve intended emissions reductions. This work is the first to develop a transparent method to compute the emissions intensity for the US electricity section from 2001 through 2017 at different temporal (annual, quarterly, monthly) and regional (US, NERC, and state) levels. We find that between 2001 and 2017 the average annual CO2 emissions intensity of electricity production in the United States decreased by 30%, from 630 g CO2 kWh(-1) to 439 gCO(2) kWh(-1). This change in CO2 intensity is attributable to an increase in generation from natural gas and wind accompanied by a reduction in coal-fired power generation. The decline in carbon intensity varies across regions, with the largest reduction between 2001 and 2017 from power plants in the Northeast (58%) and the smallest reduction from power plants in the Texas region (27%). In absolute terms the South-central region saw the largest decrease in emissions intensity (358 gCO(2) kWh(-1)) and Texas saw the smallest (164 gCO(2) kWh(-1)). We also find that replacing coal generation with natural gas or renewables has increased the monthly correlation of CO2 intensity between regions. At the state level, Delaware saw the largest decrease in CO2 intensity (466 gCO(2) kWh(-1)), and Idaho is the only state that has not decreased CO2 intensity since 2001. |
英文关键词 | electricity CO2 emissions climate change policy renewable portfolio standards energy transitions emissions intensity open data |
领域 | 气候变化 |
收录类别 | SCI-E ; SSCI |
WOS记录号 | WOS:000434258500002 |
WOS关键词 | NATURAL-GAS ; EMISSIONS DATA ; CO2 EMISSIONS ; ELECTRICITY ; UNCERTAINTY ; REDUCTIONS ; POLICIES ; PLANTS ; COAL |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/32145 |
专题 | 气候变化 |
作者单位 | 1.Carnegie Mellon Univ, Dept Civil & Environm Engn, 5000 Forbes Ave, Pittsburgh, PA 15213 USA; 2.Carnegie Mellon Univ, Dept Engn & Publ Policy, 5000 Forbes Ave, Pittsburgh, PA 15213 USA |
推荐引用方式 GB/T 7714 | Schivley, Greg,Azevedo, Ines,Samaras, Constantine. Assessing the evolution of power sector carbon intensity in the United States[J]. ENVIRONMENTAL RESEARCH LETTERS,2018,13(6). |
APA | Schivley, Greg,Azevedo, Ines,&Samaras, Constantine.(2018).Assessing the evolution of power sector carbon intensity in the United States.ENVIRONMENTAL RESEARCH LETTERS,13(6). |
MLA | Schivley, Greg,et al."Assessing the evolution of power sector carbon intensity in the United States".ENVIRONMENTAL RESEARCH LETTERS 13.6(2018). |
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