The installation cost mainly includes the energy storage system cost, power conversion cost and civil construction cost, while the operating cost includes operation and maintenance cost, residual value recovery and other additional costs. DOE's Energy Storage Grand Challenge supports detailed cost and performance analysis for a variety of energy storage technologies to accelerate their development and deployment The U. Department of Energy's (DOE) Energy Storage Grand Challenge is a comprehensive program that seeks to accelerate. The 2022 Cost and Performance Assessment includes five additional features comprising of additional technologies & durations, changes to methodology such as battery replacement & inclusion of decommissioning costs, and updating key performance metrics such as cycle & calendar life. The 2020 Cost. ach is to reduce the cost of its devices[4 ]. This paper discusses total system cost reduction in energy storage, and hydrogen energy storage still be factored into. The Levelized Cost of Storage (LCOS) metric can be a useful basis for comparing energy storage system costs, meaningfully capturing roundtrip efficiency, upfront and ongoing costs, and lifetime in a single number.