Its called pumped storage and it is only storage mechanism that can theoretically provide the quantity of power that we need. The trouble is it is geographically limited and lots of places which don't already have access to hydro power will still need natural gas and nuclear base load.
MIT study looks at the limitations of batteries and why people pushing for solar/wind are clueless:
https://www.technologyreview.com/s/611683/the-25-trillion-reason-we-cant-rely-on-batteries-to-clean-up-the-grid/
Fortunately, there is a technically and economically viable solution: nuclear power. But the green zealots would rather see society driven back to the dark ages than accept a source of power they don't like.
This is different and more efficient than pump storage. Put simply, you are not wasting hydro electricity to spin a turbine backwards.
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