Developing an input-output based method to estimate a national-level energy return on investment (EROI)
Developing an input-output based method to estimate a national-level energy return on investment (EROI)
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DOI：
10.3390/en10040534
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发表时间：
2017-04
期刊：
影响因子：
3.2
通讯作者：
Lina I. Brand-Correa;P. Brockway;C. Copeland;T. Foxon;A. Owen;P. Taylor
中科院分区：
文献类型：
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作者：
Lina I. Brand-Correa;P. Brockway;C. Copeland;T. Foxon;A. Owen;P. Taylor
有人担心，化石燃料的能源投资回报率不断下降，以及替代能源的能源回报率低，可能会限制国民经济在进行低碳转型的同时继续实现经济增长和改善社会福利的能力。然而，为了在国家范围内检验这些关切，在计算国家一级的EROI并分析其政策影响方面存在概念和方法上的差距。我们通过开发投入产出方法的新应用来解决这一问题，以计算国家级间接能源投资，这是计算国家级EROI所需的组成部分之一。这是一种实物和货币相结合的方法，使用了多地区投入产出数据和能源扩展。我们讨论了与确定一个国民经济的EROI有关的一些概念和方法问题，并详细描述了该方法的方法和数据要求。我们获得了英国1997-2012年期间的初步结果，这些结果表明，自21世纪初以来，英国的EROI一直在下降。我们讨论了衡量国家层面EROI的政策相关性，并提出了未来研究的途径。
Concerns have been raised that declining energy return on energy investment (EROI) from fossil fuels, and low levels of EROI for alternative energy sources, could constrain the ability of national economies to continue to deliver economic growth and improvements in social wellbeing while undertaking a low-carbon transition. However, in order to test these concerns on a national scale, there is a conceptual and methodological gap in relation to calculating a national-level EROI and analysing its policy implications. We address this by developing a novel application of an Input-Output methodology to calculate a national-level indirect energy investment, one of the components needed for calculating a national-level EROI. This is a mixed physical and monetary approach using Multi-Regional Input-Output data and an energy extension. We discuss some conceptual and methodological issues relating to defining EROI for a national economy, and describe in detail the methodology and data requirements for the approach. We obtain initial results for the UK for the period 1997–2012, which show that the country’s EROI has been declining since the beginning of the 21st Century. We discuss the policy relevance of measuring national-level EROI and propose avenues for future research.