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Considering Life Cycle Greenhouse Gas Emissions in Power System Expansion Planning for Europe and North Africa Using Multi-Objective Optimization

Junne, Tobias and Cao, Karl-Kien and Miskiw, Kim Kira and Hottenroth, Heidi and Naegler, Tobias (2021) Considering Life Cycle Greenhouse Gas Emissions in Power System Expansion Planning for Europe and North Africa Using Multi-Objective Optimization. Energies, 14. Multidisciplinary Digital Publishing Institute (MDPI). doi: 10.3390/en14051301. ISSN 1996-1073.

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Official URL: https://www.mdpi.com/1996-1073/14/5/1301

Abstract

We integrate life cycle indicators for various technologies of an energy system model with high spatiotemporal detail and a focus on Europe and North Africa. Using multi-objective optimization, we calculate a pareto front that allows us to assess the trade-offs between system costs and life cycle greenhouse gas (GHG) emissions of future power systems. Furthermore, we perform environmental ex-post assessments of selected solutions using a broad set of life cycle impact categories. In a system with the least life cycle GHG emissions, the costs would increase by ~63%, thereby reducing life cycle GHG emissions by ~82% compared to the cost-optimal solution. Power systems mitigating a substantial part of life cycle GHG emissions with small increases in system costs show a trend towards a deployment of wind onshore, electricity grid and a decline in photovoltaic plants and Li-ion storage. Further reductions are achieved by the deployment of concentrated solar power, wind offshore and nuclear power but lead to considerably higher costs compared to the cost-optimal solution. Power systems that mitigate life cycle GHG emissions also perform better for most impact categories but have higher ionizing radiation, water use and increased fossil fuel demand driven by nuclear power. This study shows that it is crucial to consider upstream GHG emissions in future assessments, as they represent an inheritable part of total emissions in ambitious energy scenarios that, so far, mainly aim to reduce direct CO2 emissions.

Item URL in elib:https://elib.dlr.de/141163/
Document Type:Article
Title:Considering Life Cycle Greenhouse Gas Emissions in Power System Expansion Planning for Europe and North Africa Using Multi-Objective Optimization
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Junne, TobiasTobias.Junne (at) dlr.deUNSPECIFIED
Cao, Karl-KienKarl-Kien.Cao (at) dlr.deUNSPECIFIED
Miskiw, Kim KiraKim.Miskiw (at) dlr.deUNSPECIFIED
Hottenroth, Heidiheidi.hottenroth (at) hs-pforzheim.deUNSPECIFIED
Naegler, TobiasTobias.Naegler (at) dlr.dehttps://orcid.org/0000-0003-2390-1672
Date:February 2021
Journal or Publication Title:Energies
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:14
DOI :10.3390/en14051301
Publisher:Multidisciplinary Digital Publishing Institute (MDPI)
ISSN:1996-1073
Status:Published
Keywords:energy system modeling; life cycle assessment; multi-objective optimization
HGF - Research field:Energy
HGF - Program:Energy System Design
HGF - Program Themes:Energy System Transformation
DLR - Research area:Energy
DLR - Program:E SY - Energy System Technology and Analysis
DLR - Research theme (Project):E - Systems Analysis and Technology Assessment
Location: Stuttgart
Institutes and Institutions:Institute of Networked Energy Systems > Energy Systems Analysis, ST
Deposited By: Naegler, Tobias
Deposited On:30 Mar 2021 15:46
Last Modified:30 Mar 2021 15:46

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