000170470 001__ 170470
000170470 005__ 20260422085545.0
000170470 0247_ $$2doi$$a10.1007/s13762-026-07161-w
000170470 0248_ $$2sideral$$a148966
000170470 037__ $$aART-2026-148966
000170470 041__ $$aeng
000170470 100__ $$aCarvalho, M.
000170470 245__ $$aRethinking environmental payback: its declining relevance in the decarbonization of the electricity mix
000170470 260__ $$c2026
000170470 5060_ $$aAccess copy available to the general public$$fUnrestricted
000170470 5203_ $$aThis study identifies, discusses and analyzes the most commonly used parameters for the evaluation of energy systems from an environmental perspective. This work provides a critical assessment of the applicability of environmental payback time as a metric for evaluating energy systems, particularly in the context of ongoing decarbonization efforts. A new environmental indicator is proposed, the dynamic payback time, which incorporates the evolution of the emission factor for the electricity grid throughout the operational lifetime of the energy system. The results of two case studies in two countries with dissimilar energy structures and diverse development of electricity generation systems (Brazil and Spain) are presented. A new parameter is presented, the EME parameter (Embodied emissions divided by the electricity Mix Emissions), which can help determine the potential impact of an energy system in the overall energy mix of a country. The results confirm that temporal evolution is a crucial parameter in the environmental assessment of energy systems, concluding that new dynamic parameters are essential for consolidating the findings from environmental studies.
000170470 536__ $$9info:eu-repo/grantAgreement/ES/MCIN/RYC2021-034265-I
000170470 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttps://creativecommons.org/licenses/by/4.0/deed.es
000170470 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000170470 700__ $$ade Mello Delgado, D. B.
000170470 700__ $$aAbrahão, R.
000170470 700__ $$0(orcid)0000-0003-3269-023X$$aGuillén-Lambea, S.$$uUniversidad de Zaragoza
000170470 7102_ $$15004$$2590$$aUniversidad de Zaragoza$$bDpto. Ingeniería Mecánica$$cÁrea Máquinas y Motores Térmi.
000170470 773__ $$g23, 5 (2026), [13 pp.]$$pInternational Journal of Environmental Science and Technology$$tINTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY$$x1735-1472
000170470 8564_ $$s1131545$$uhttps://zaguan.unizar.es/record/170470/files/texto_completo.pdf$$yVersión publicada
000170470 8564_ $$s2469330$$uhttps://zaguan.unizar.es/record/170470/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000170470 909CO $$ooai:zaguan.unizar.es:170470$$particulos$$pdriver
000170470 951__ $$a2026-04-22-08:33:05
000170470 980__ $$aARTICLE