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One application would be to use a large version of this drive to pump off peak power, using water, into a reservoir, increasing the level of water in the reservoir. The energy potential of that same water could be reapplied for peak power generation. With an overall efficiency of around 85% you would have energy storage that could be created with lower cost off peak power and used for on peak power. This would allow greater on peak production without increasing capacity, or using more efficient capacity that is available. It's the only way I know to store electrical energy and would use the existing facitliies (reservoirs). One of the most efficient power generation capabilities is hydroelectric, which is actually solar (evaporation) power and you usually get rain when direct solar is not available.
regards
Mech
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