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Journal Articles Energies Year : 2021

Assessing Global Long-Term EROI of Gas: A Net-Energy Perspective on the Energy Transition

Abstract

Natural gas is expected to play an important role in the coming low-carbon energy transition. However, conventional gas resources are gradually being replaced by unconventional ones and a question remains: to what extent is net-energy production impacted by the use of lower-quality energy sources? This aspect of the energy transition was only partially explored in previous discussions. To fill this gap, this paper incorporates standard energy-return-on-investment (EROI) estimates and dynamic functions into the GlobalShift bottom-up model at a global level. We find that the energy necessary to produce gas (including direct and indirect energy and material costs) corresponds to 6.7% of the gross energy produced at present, and is growing at an exponential rate: by 2050, it will reach 23.7%. Our results highlight the necessity of viewing the energy transition through the net-energy prism and call for a greater number of EROI studies.
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Dates and versions

hal-03322866 , version 1 (19-08-2021)

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Louis Delannoy, Pierre-Yves Longaretti, David Murphy, Emmanuel Prados. Assessing Global Long-Term EROI of Gas: A Net-Energy Perspective on the Energy Transition. Energies, 2021, 14 (16), pp.5112. ⟨10.3390/en14165112⟩. ⟨hal-03322866⟩
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