Special Issue "Energy Return on Energy Investment"

A special issue of Sustainability (ISSN 2071-1050). This special issue belongs to the section "Energy Sustainability".

Deadline for manuscript submissions: 30 June 2021.

Special Issue Editor

Prof. Jun Matsushima
Guest Editor
Department of Environment Systems, Graduate School of Frontier Sciences, The University of Tokyo, Japan
Interests: Seismic exploration; Rock physics; Gas hydrates; Geothermal energy; Energy Return on Energy Investment
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Special Issue Information

Dear Colleagues,

Various studies have been conducted over the past half-century on the qualitative assessment of the degree to which the use of our energy resources can actually contribute to society. Systems ecologist Howard T. Odum, known as the progenitor of a qualitative energy assessment, first advanced the concept of “net energy” in the 1970s, which is essentially the energy obtained from an energy source minus the energy used in its acquisition and concentration (the energy investment or energy cost). One way to mathematically express the net energy is the EROI (energy return on investment), which was defined by Charles A.S. Hall in the late 1970s and 1980s as the ratio of the total energy gained from an energy production process to the energy invested in its acquisition. The estimation of EROI can provide useful insight for examining the advantages and disadvantages of different fuels in the energy production process, and is constantly being improved in terms of the protocol for the calculation and the system boundary. On the other hand, there are still many challenges, such as data uncertainty, in EROI estimation. Many EROI studies have focused on oil and gas resources, which are the most important to every aspect of our society, and have concluded that the EROI for oil and gas has declined over the past one to two decades. Although in recent years, much attention has been paid to EROI estimation for renewable energy resources, the future EROI trends for renewable energy resources are very uncertain. Several studies imply that such a declining EROI may have a large impact on the world economy and quality of life.

This Special Issue provides an opportunity for the further discussion of the potential benefits and challenges of EROI-related studies. We welcome submissions from a wide range of contributors in any area of EROI.

Prof. Dr. Jun Matsushima
Guest Editor

Manuscript Submission Information

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  • energy return on investment (EROI)
  • net energy analysis
  • energy quality
  • resource depletion
  • biophysical economics

Published Papers (1 paper)

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Open AccessArticle
Savings and Investment Decisions in the Polish Energy Sector
Sustainability 2021, 13(2), 553; https://doi.org/10.3390/su13020553 - 08 Jan 2021
The paper presents the results of empirical studies of the energy sector in Poland in the period 2005–2020. The main research problem was the impact of gross savings of changes in gross investment levels in this sector. To this end, we used a [...] Read more.
The paper presents the results of empirical studies of the energy sector in Poland in the period 2005–2020. The main research problem was the impact of gross savings of changes in gross investment levels in this sector. To this end, we used a formula determining the value of private investments from the theory of the economic dynamism of M. Kalecki. First, we checked its adjustment to the economic reality of the energy sector and analysed the impact of individual independent variables on gross investment levels. We calculated linear regression and correlation coefficients in two variants due to delays between investments and investment decisions. The results of the studies justified the hypothesis. According to it, gross investments in the Polish energy sector are determined by the level of gross savings of companies. Full article
(This article belongs to the Special Issue Energy Return on Energy Investment)
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