Celi Luciano
National Research Council, Rome, Italy.
Biophys Econ Sust. 2021;6(4):12. doi: 10.1007/s41247-021-00095-6. Epub 2021 Nov 27.
Energy Return on Investment (EROI, sometimes EROEI) is one of the most important indices for evaluating the efficacy of a primary energy source. It is generally defined as the relation between the energy extracted from a given resource and the energy costs diverted from society to extract it. In this paper, the EROI of 30 oil companies was calculated using the CO emitted by the companies and declared in Sustainability and/or Annual Reports as required by law, to estimate the energy used for the production process over a time span of 20 years (1999-2018). The resulting EROI estimates for the companies analyzed are rather homogeneous and, except in some cases, these values are relatively constant over time. These values agree (although sometimes somewhat lower than) estimates derived by other methods.
The online version contains supplementary material available at 10.1007/s41247-021-00095-6.
能源投资回报率（EROI，有时也称为EROEI）是评估一次能源源效率的最重要指标之一。它通常被定义为从给定资源中提取的能源与从社会转移用于提取该资源的能源成本之间的关系。在本文中，根据法律要求，利用公司排放并在可持续发展报告和/或年度报告中声明的二氧化碳，计算了30家石油公司的EROI，以估算20年（1999 - 2018年）时间跨度内生产过程中使用的能源。对所分析公司得出的EROI估计值相当一致，并且除了某些情况外，这些值随时间相对稳定。这些值与通过其他方法得出的估计值相符（尽管有时略低）。
在线版本包含可在10.1007/s41247 - 021 - 00095 - 6获取的补充材料。
