This paper discusses the background and results of the current EPRI efforts relating to energy storage system performance assessment, how EPRI assesses performance of other utility assets, how these similar tools can inform next phase efforts, and how it can. This paper discusses the background and results of the current EPRI efforts relating to energy storage system performance assessment, how EPRI assesses performance of other utility assets, how these similar tools can inform next phase efforts, and how it can. This report was prepared by DNV in the course of performing work contracted for and sponsored by the New York State Energy Research and Development Authority (hereafter “NYSERDA”). The opinions expressed in this report do not necessarily reflect those of NYSERDA or the state of New York, and. In recent years, China's new energy storage application on a large scale has shown a good development trend; a variety of energy storage technologies are widely used in renewable energy development, consumption, integrated intelligent energy systems, distribution grids, and microgrids; and. Energy-storage technologies have rapidly developed under the impetus of carbon-neutrality goals, gradually becoming a crucial support for driving the energy transition. This paper systematically reviews the basic principles and research progress of current mainstream energy-storage technologies. This report fulfills the duties assigned to the Energy Storage (Technologies) Subcommittee (the Subcommittee) of the Electricity Advisory Committee (EAC) by the Energy Independence and Security Act (EISA) of 2007 related to assessing the U. Department of Energy's (DOE) activities in energy. Energy storage systems will be fundamental for ensuring the energy supply and the voltage power quality to customers. Energy storage systems also serve an increasing.