[kach22i]

Originally Posted by RustyLugNut

Here is a storage scheme that parallels the idea of using excess renewable energy to lift large bricks and use the resultant potential energy later.

https://www.fastcompany.com/90261233...edium=referral

Frictional losses verses evaporation of reservoirs or cost of water towers?

I learned about the below a few months ago, similar to as described in the article I suspect.

Ludington Pumped Storage Power Plant
https://en.wikipedia.org/wiki/Luding...ge_Power_Plant

At night, during low demand for electricity, the turbines run in reverse to pump water 363 feet (111 m) uphill from Lake Michigan into the reservoir. The plant takes advantage of the natural steep sand dune landform of eastern Lake Michigan. During periods of peak demand water is released to generate power.

The below is new to me as well, it is interesting.

Originally Posted by redneck

.
Same concept as using rail cars.

https://s3.amazonaws.com/siteninja/m...S_-_101217.pdf

The cost of land would have a serious affect on that system, as much as geography has on the earth berm reservoir systems.

Yea, the original concept posted offers a lot of advantages.