Massachusetts has a pumped storage station in the Berkshires, Bear Swamp. [1] As of a few years ago they had an underground visitor's center with a scale model

Massachusetts has a pumped storage station in the Berkshires, Bear Swamp. [1] As of a few years ago they had an underground visitor's center with a scale model and lots of info. Not sure whether it's open anymore though. [1] https://en.wikipedia.org/wiki/Bear_Swamp_Hydroelectric_Power_Station https://en.wikipedia.org/wiki/Bear_Swamp_Hydroelectric_Power...