Hard facts DLE Various Countries. Lake included., page-53

solar for pumps
yeah i theory but it would require an enormous amount of solar power to extract from and dispose into an unknown number of wells and that all goes onto CAPEX, LKE have made no announcements regarding using solar so thats all speculation
natural pressure flows
as far as i know, there has been no data published by lake regarding this, but lakes brine has to be pumped to the surface, it doesnt flow of its own volition in any kind of pressure which would be significant

nothing against lake, but investors should be truthful with themselves about the pro's and con's, lake didnt just lose 75% from the ATH because of shorters, just like VUL and NVX they never should've gotten that high to begin with, blame the hype train and a crazy bull run, lakes fall can be blamed on macro conditions happening to coinside with the BOD finally having to come clean that all the timelines were complete fantasy