I'm pretty sure it's done quite frequently. It's a pretty simple battery system with--apparently--an 80+% round-trip efficiency to it.
The biggest problem is getting permission to move that much water around. I live next to a lake and shudder at the regulatory hurdles I'd encounter building something like this. There'd be at least 4 government agencies before I even negotiated to sell to the public utility.
The biggest problem is getting permission to move that much water around. I live next to a lake and shudder at the regulatory hurdles I'd encounter building something like this. There'd be at least 4 government agencies before I even negotiated to sell to the public utility.
https://en.wikipedia.org/wiki/Pumped-storage_hydroelectricit...