Can CCS become a battery?

摘要

Approaches to energy storage beyond electrochemical systems include pumped hydropower, flywheels, and compressed air energy storage (CAES); and technically, could also include the use of compressed carbon dioxide for providing both work and cooling services in industrial settings. This paper shows how one operational mode of compressed carbon dioxide energy storage (CDES) could enhance plant output by 10% and lead to a non-trivial increase in financial performance for a power generator. The successful CDES system could be more effective at increasing plant valuation than a plant expansion of equivalent capacity. The aim of this study is to characterize one version of the CDES concept, and to highlight innovation and analysis needs that could lead to economically feasible demonstrations.