I wish I could find the PDF from a research group on the topic of CAES. Their thesis is that we could generate most of the USA's power by installing solar in th

I wish I could find the PDF from a research group on the topic of CAES. Their thesis is that we could generate most of the USA's power by installing solar in the south west. The power would get pushed to the rest of the US and stored in CAES repositories using natural caves. Each cave system should provide 3 days of sustained use for its region. This would allow for power disruptions. I can't recall if they also included natural gas as a fallback incase of protracted outage. It does open us up to a single point of attack, but I thought it was an interesting idea.