Say a tank survives for XXX years before corrosion demands the entire thing needs to be scrapped. Wouldn't that still be an economically attractive option for s

Say a tank survives for XXX years before corrosion demands the entire thing needs to be scrapped. Wouldn't that still be an economically attractive option for storing surplus solar energy during the day? Or is the daily upkeep of the installation such that there are significant recurring costs that dwarf the initial capital investment?