Techno-Economic Comparison of Utility-Scale Compressed Air and Electro-Chemical Storage Systems

Coriolano Salvini () and Ambra Giovannelli
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Coriolano Salvini: Department of Industrial, Electronic and Mechanical Engineering, University of Roma TRE, 00154 Roma, Italy
Ambra Giovannelli: Department of Industrial, Electronic and Mechanical Engineering, University of Roma TRE, 00154 Roma, Italy

Energies, 2022, vol. 15, issue 18, 1-16

Abstract: The paper deals with a techno-economic comparison between utility-scale diabatic compressed air energy storage (D-CAES) systems equipped with artificial storage and Battery Energy Storage (BES) systems based on consolidated technologies, such as Sodium-Sulfur (Na-S) and Lithium-ion (Li-Ion). The comparison is carried out on the basis of the levelized cost of storage (LCOS). Analyses have been performed by varying key inputs, such as the rated power, the storage capacity, the price of electricity absorbed from the grid during the charging phase, and the cost of fuel fed to D-CAES during the discharge phase. Na-S technology-based systems always show better techno-economic performance in respect to Li-Ion based ones. The economic performance of both D-CAES and BES improves by increasing the storage capacity. The D-CAES performance improvement rate, however, is higher than that estimated for BES based systems. Moreover, the economic performance of D-CAES systems is less sensitive to the price of electricity in respect of BES based storage facilities. As a result, D-CAES based solutions can reach a LCOS lower than that of Na-S batteries if the size of the system and the price of electricity are large enough.

Keywords: Electric Energy Storage (EES); Diabatic Compressed Air Energy Storage (D-CAES); Battery Energy Storage (BES); Sodium-Sulfur (Na-S) batteries; Lithium-ion (Li-ion) batteries; Levelized Cost of Storage (LCOS) (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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