Comment by PaulDavisThe1st
2 hours ago
I've read that globally almost all the places that can do pumped hydro "storage" already exist. I don't know if that's true, but if it is, then while this is a really cool technology, we won't be getting much further with it.
AFAIK, it is not really true. But you need several things to do a pumped storage: a big source of water (and it better to not be a salt one), a place where a reservoir can be made and an elevation difference between them. So I'd assume that the most of the places that can be easily used to make a pumped storage already have one.
It's possible in the Catskills in New York State (USA) but a proposed project there was killed by the greens. Who also killed fracking in NYS and a power line from Quebec to Mass and closed a nuclear plant and ....