We present a framework to differentiate strategic capacity withholding behaviors attributed to market power from inherent competitive bidding in storage unit strategies. Department of Energy's (DOE's) Energy Storage Grand Challenge (ESGC), DOE intends to synthesize and disseminate best-available energy storage data, information, and analysis to inform decision-making and accelerate technology adoption. Grid-scale storage can play an important role in providing reliable electricity supply, particularly on a system with increasing variable. . ts and the need for policies to complement investments with renewables. I develop a new dynamic-equilibrium framework that allows for storage's price impact and incumbent best responses to storage's p oduction and apply it to study the South Australian Electricity Market. Stacked Value Arbitrage California's CAISO market shows how 100MW systems can achieve: 2. Virtual Power Plant (VPP) Aggregation EK SOLAR's 2022 pilot project in Germany. . Energy storage is the capture of energy produced at one time for use at a later time. Key markets such as California, Texas. .