Why would there have to be water flowing continuously? The water has to flow is order to generate the current, but when you turn it off then you can allow the flow to stop. The energy is stored in this scheme via hydrostatic pressure.
Which brings me back to my original point that there's no way you can rival the energy per mass of an electronic or fuel cell battery.
Since you're going to have to generate the pressure anyway, then why wouldn't you put the energy into a more efficient form?
Which brings me back to my original point that there's no way you can rival the energy per mass of an electronic or fuel cell battery.
Since you're going to have to generate the pressure anyway, then why wouldn't you put the energy into a more efficient form?
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