I guess my thought is if you used water it could be hooked up to a larger reservoir and just pump from the water that’s there. Whereas the concrete used would serve no other purpose outside of energy storage.
Yeah, if you have a reservoir to pump from that could make sense as well. I’m guessing different regions would prefer different approaches based on what’s available. They do mention concrete is recycled, so it’s not like new concrete needs to be produced either.
I’m not sure why it would be a problem that it’s the same concrete though
I guess my thought is if you used water it could be hooked up to a larger reservoir and just pump from the water that’s there. Whereas the concrete used would serve no other purpose outside of energy storage.
Yeah, if you have a reservoir to pump from that could make sense as well. I’m guessing different regions would prefer different approaches based on what’s available. They do mention concrete is recycled, so it’s not like new concrete needs to be produced either.