Tesla Megapacks are about to replace Hawaii’s last remaining coal plant

[terracore]

Sand doesn't catch fire and it's cheaper to mine than lithium.

https://www.sciencetimes.com/article...-installed.htm

NREL has a similar project
https://www.nrel.gov/news/program/20...in-review.html
https://www.nrel.gov/news/program/20...echnology.html