One more thing.. For quick vetting that this idea is legit:
Here is the original research paper where I source more of my info:
Underground pumped hydroelectric storage Allen, R.D., Doherty, T.J., and Kannberg, L.D., for the Pacific Northwest Laboratory, sponsored by the United States DOE https://www.osti.gov/biblio/6517343
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[ 590 ms ] story [ 1433 ms ] threadYesterday I posted my full research report on this topic. I wanted to also post this short summary presentation which explains this technology.
Here is my post for the full version if anyone would be so kind as to help spread the word. https://news.ycombinator.com/item?id=20690640
Peace, love, and climate stability, Eric
Here is the original research paper where I source more of my info:
Underground pumped hydroelectric storage Allen, R.D., Doherty, T.J., and Kannberg, L.D., for the Pacific Northwest Laboratory, sponsored by the United States DOE https://www.osti.gov/biblio/6517343