Pumped Hydro Storage
Comments debate the feasibility, efficiency, and challenges of water-pumping based energy storage systems, often critiquing the need to pump water uphill and comparing to simple reservoir methods.
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They're pumping water, see technical paper.
Is this any more effective than just pumping water into a higher reservior? It seems like a lot of stuff can fail here.
No; at some point you're going to lift the water up. That requires pumping.
Would this work with water flows?
You can power it by pumping down an equal amount of surface water
You still have to pump the water uphill.
Why bother with water supply when you can use the air flow :(
Wouldn't you need two reservoirs in that case? Otherwise where is the water being drained down to take advantage of the potential energy?
Could this be used to transport water long distances like an aqueduct?
So like... why doesn't someone just fill a reservoir or something?