Journal
JOURNAL OF ENERGY STORAGE
Volume 57, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.est.2022.106167
Keywords
Consequential life cycle assessment; Greenhouse gas emissions; Hybrid energy storage system; Renewable power system
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This article evaluates the life cycle greenhouse gas (GHG) emissions from hybrid energy storage systems (HESSs) in 100% renewable power systems to promote renewables. A consequential life cycle assessment (CLCA) approach is used to assess the environmental implications of HESSs. Different HESS combinations, including various energy storage technologies, are studied based on the power system of Sweden. The study finds that the Pumped hydro+Li-ion+Flywheel combination has the lowest life cycle GHG emissions among the HESSs compared.
To promote the development of renewables, this article evaluates the life cycle greenhouse gas (GHG) emissions from hybrid energy storage systems (HESSs) in 100% renewable power systems. The consequential life cycle assessment (CLCA) approach is applied to evaluate and forecast the environmental implications of HESSs. Based on the power system of Sweden, different HESS combinations, which include energy storage (ES) technologies: pumped hydro ES, hydrogen ES, lithium-ion (Li-ion) batteries, lead-acid (PbA) batteries, vanadium redox (VR) batteries, supercapacitors (SCs), and flywheels, are discussed. The results show that for Sweden and similar largescale utility applications, the cradle-to-gate GHG emissions from the HESS contribute to a major share of the life cycle GHG emissions due to the under-utilization of the cycle life. Among the HESSs compared in this study, the Pumped hydro+Li-ion+Flywheel combination exhibits the least life cycle GHG emissions. Moreover, the phasing out of nuclear power brings a severe challenge to the carbon reduction target. However, the introduced HESS manages to reduce GHG emissions from a 100% renewable power system.
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