Our growing need for more power, shifting patterns of demand, and the rapid expansion of variable renewable generation is presenting challenges to the grid. Energy storage is certainly part of the solution, but is the market or regulation driving the development of storage? How is long duration storage being advanced to better address these needs? Are there long duration energy storage solutions today that are economical to broadly deploy? Get some answers in this Utility Dive article that discusses the drivers and economics of long duration energy storage.